After working on a C102 Cassette deck, I can tell you
that it's not built as well as other stuff from "the orient".
For example, Hi end TEAC decks like the C-3x and C-3RX come from
either Korea and/or Japan and they use better motors, and better heads,
The C102 has a junky motor, I know, I've tried to replace one, and it
is no longer available. Also, The connectors that connect the front panel
to the circuit board are nothing less than a nightmare.
I got stuck with a C102, and Fortunately, I was able to sell it
to regain some money lost on it. The guy wanted it for parts.
I still lost on the deal overall.
I think the only SAE stuff worth while is the Pre "02" stuff.
The "02" stuff had some nice ideas, but the actual construction
was crappy. I did like the P102 I had though. No controls to wear out.
Nice idea.
-=Jeff Gross=-
toggle quoted message
Show quoted text
On Tue, 7 Mar 2000 sstinc wrote: From: sstinc:"First sstinc:Last" <jamesbongiorno@...>
Dear Eric,
Please accept my apology if it sounded like I was berating the "02" line of
products from SAE. I was not. I tried to imply that SAE was taking a
different course of product development. This line was done as a lower
priced alternative to US made products which could never have been made here
at those prices. For the most part the innards, ie: circuit designs were
done in Asia. I do believe also that some of these units were made by
Marubeni in Japan. These of course were typical "oriental" products and were
good enough to serve the intended purpose, that is a good line of products
at a much lower cost.
Since I personally had no involvement in these products, I cannot pass any
judgement on them. I'm sure that there are a lot of satisfied people out
there (like yourself) that were very happy with the products and that's all
that matters.
Sincerely.
James Bongiorno
yzfr1rider@... wrote:
From: yzfr1rider@...
Hello all,
Am new to the group and have been a 02 series owner since '89-90. I
have sold off most of my "02" equipment, had to streamline my system.
P-102 (sold)
E-102 (sold)
D-102 (sold)
I-102 (sold)
C-102 (want to sell)
T-102 (keeping)
A-502 (keeping both/bridged config)
Anyway to the point, I read through the full history of posts and was
kind of disappointed after reading and accepting the reality of James
Bongiorno's post of the "02 series" and its builder Inkel. I knew
they were assembled in Korea and thought they were designed in Santa
Monica. Had been up to Santa Monica/Northridge a few times when my
units had problems before they completely closed up. I had many long
discussions with Jeffrey Stone (t/s manager) and found him to be very
helpful with my problems.
James,
If you could, and at your convince, give me any history of the A-502
and your opinion on the worthiness and quality of its design. After
reading your earlier posts I respect your opinion.
Respectfully,
Eric Hagerty - San Diego, Ca
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sstinc:"First sstinc:Last"
Dear Eric,
Please accept my apology if it sounded like I was berating the "02" line of
products from SAE. I was not. I tried to imply that SAE was taking a
different course of product development. This line was done as a lower
priced alternative to US made products which could never have been made here
at those prices. For the most part the innards, ie: circuit designs were
done in Asia. I do believe also that some of these units were made by
Marubeni in Japan. These of course were typical "oriental" products and were
good enough to serve the intended purpose, that is a good line of products
at a much lower cost.
Since I personally had no involvement in these products, I cannot pass any
judgement on them. I'm sure that there are a lot of satisfied people out
there (like yourself) that were very happy with the products and that's all
that matters.
Sincerely.
James Bongiorno
yzfr1rider@... wrote:
toggle quoted message
Show quoted text
From: yzfr1rider@...
Hello all,
Am new to the group and have been a 02 series owner since '89-90. I
have sold off most of my "02" equipment, had to streamline my system.
P-102 (sold)
E-102 (sold)
D-102 (sold)
I-102 (sold)
C-102 (want to sell)
T-102 (keeping)
A-502 (keeping both/bridged config)
Anyway to the point, I read through the full history of posts and was
kind of disappointed after reading and accepting the reality of James
Bongiorno's post of the "02 series" and its builder Inkel. I knew
they were assembled in Korea and thought they were designed in Santa
Monica. Had been up to Santa Monica/Northridge a few times when my
units had problems before they completely closed up. I had many long
discussions with Jeffrey Stone (t/s manager) and found him to be very
helpful with my problems.
James,
If you could, and at your convince, give me any history of the A-502
and your opinion on the worthiness and quality of its design. After
reading your earlier posts I respect your opinion.
Respectfully,
Eric Hagerty - San Diego, Ca
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Hello all,
Am new to the group and have been a 02 series owner since '89-90. I
have sold off most of my "02" equipment, had to streamline my system.
P-102 (sold)
E-102 (sold)
D-102 (sold)
I-102 (sold)
C-102 (want to sell)
T-102 (keeping)
A-502 (keeping both/bridged config)
Anyway to the point, I read through the full history of posts and was
kind of disappointed after reading and accepting the reality of James
Bongiorno's post of the "02 series" and its builder Inkel. I knew
they were assembled in Korea and thought they were designed in Santa
Monica. Had been up to Santa Monica/Northridge a few times when my
units had problems before they completely closed up. I had many long
discussions with Jeffrey Stone (t/s manager) and found him to be very
helpful with my problems.
James,
If you could, and at your convince, give me any history of the A-502
and your opinion on the worthiness and quality of its design. After
reading your earlier posts I respect your opinion.
Respectfully,
Eric Hagerty - San Diego, Ca
|
Anyone know where I can obtain a remote control
for a Carver CT-7 Tuner/preamp?
-=Jeff Gross=-
|
Let me know if your looking for any electronics part, new or old and
I will try and help. I have been in electronics purchasing and
acquisitions for years. From off the shelf to obsolete,
manufacturers, distributers to brokers. There are lots of places to
get parts: Big distributers like Avnet, Arrow, Newark, the VEBA group
- Wyle, Insight, Unique; parts houses like Digi-Key, Mousers, Parts
Express, MCM electronics. The other houses have been bought by the
large distributers and now fall under their umbrella; Marshall,
Penstock, Capstone, Bell, Richie, Time and more. There are also the
Manufacturers and reps, good for samples.
|
First, anyone know where I can get a schematic for this amp?
It won't come out of protection. It doesn't seem to have anything
shorted and the +/- rails seem to be ok. That is if around 85 volts
is what is supposed to be there.
Any ideas on what or where to look?
Thanks
Luther
|
is the toroidal power supply for the A301,A501,2401 and A1001 the
same unit?
|
are these amps identical except for the faceplate?
|
From: "jim albert" <tbirdsc@...>
how important are the cooling fans for the 2400-2600 series amps
being used in a home environment
What would have been nice was a temp sensor that turned on the fan when the heatsink reached a certain temperature. The thing about the 2500 and 2600 is that if you took off the top cover and remove the fan, you could run the amp in free air and get good cooling airflow. The heatsink airflow would be identical to the MKIIICM (200Watts/Chan) and the MK31B(50 W/chan same as the 3100) amps which do NOT have fans. The airflow would be backwards compared to the forced airflow direction of the 2600 not that really means anything. In my opinion you would not have any problems in a reasonable home environment unless you really like pushing your amp on long stretches. However, I could not state with any certainty it would work well under all conditions. That would require testing. I ran my 2600 at 133W/Chan 1K sinewave into a resistive load and the amp got really warm even WITH the fan. Running an amp continuously at 1/3 of its rated power is a good thermal test. So I sure the amp can get very hot if pushed. There is a thermal cutout on the AMP that removes AC power if the heatsink gets to hot. So there is some level of protection. I do not think you can run the 2400 series if amps without a fan at all even with the cover off. It looks like the heatsink assembly was almost designed from the ground up to require forced airflow. However, it would be an interesting comparison of that heatsink configuration with the Dynaco 400 heatsink, maybe it could work. You could build a thermal cooling circuit into the 2600 that monitored the temp of the heatsink and turned on and off the AC fan accordingly. Use the 6.3VAC power that drive the front panel bulbs as the input power source for you circuit. A simple voltage comparator and 5V regulator would be all that is needed in terms of IC circuitry. Configuring the thermistor in a voltage divider would allow you to generate a voltage that is proportional to temperature. The comparator would monitor the thermistor voltage relative to a voltage trip threshold that would be created by a another fixed resistor divider. I would also add about the equivalent of 10C of thermal hysteresis to prevent frequent fan power cycling. The comparator's output would drive the relay which drives the fan. You could mount the circuit on the big ground bus bar which also supports the 120VAC connection terminal strip. Best Regards, Mark Gurries ---------------------------------------------------------- Battery Charging and Power Systems Application Engineer Linear Technology,1630 McCarthy Blvd, Milpitas, CA, 95035 WRK(408) 954-8400 x3864 Email: gurriesm@... FAX(408) 428-9413 WebSite: ---------------------------------------------------------- Work & Hobby Related Website Info: Smart Battery Charging Systems: Model Railroad Club: ----------------------------------------------------------
|
sstinc:"First sstinc:Last"
Dear Jim,
As the designer of that series using my radical horizontal heat sink
radiator I can tell you that it is very efficient. However, as the power
output goes up, obviously the disappation goes up correspondingly. The
average temperature rise is solely dependent on the amount of dynamic range
that you want from your system. Those SAE amps were designed with industrial
uses in mind ie; rock concerts, discos, etc. where the dynamic range is much
more limited than in the home. Even a great many people found that my
earlier Ampzilla could be run without the fan. It all depends on how loud
you listen and the efficiency of your speakers. Remember that a mere 20 db
of dynamic range, which is not a lot, is a power factor of 100 times.
Therefore, a nominal 200 watt amp would be running an average power level of
around 2 watts. A 30 db dynamic range would have an average level of 200
milliwatts!
The only way for you to tell in your system is to disconnect the fan and
after say an hour of listening, see how hot the power transistors get (NOT
the heat sink). If you can KEEP your finger on the case of the devices
without feeling pain, then you are probably OK. If however, after a second
or two, you have to pull your finger off so as not to get burned, then the
temperature is too hot necessitating the fan.
James Bongiorno
jim albert wrote:
toggle quoted message
Show quoted text
From: "jim albert" <tbirdsc@...>
how important are the cooling fans for the 2400-2600 series amps
being used in a home environment
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how important are the cooling fans for the 2400-2600 series amps
being used in a home environment
|
desertfox wrote:
To: James Bongiorno &
Mark Gurries
There has been a lot of correspondence these last few days about the SAE
2600 amplifier. Mark is right. There are 8 Output transistors, 4 Driver
transistors, and 4 Pre-driver transistors Per Channel. I have one of
these amps and I also have the service manual for it. The SAE2600 and
SAE 2500 are almost identical in circuitry, except for a couple of extra
diodes, different Output Transistors and a different power transformer.
I finally got the specification on the Toshiba 2SA1837(PNP) and the
2SC4793(NPN) which you recommend, which is ( Vcbo=230v, Vceo=230v,
Vebo=5v, Ic=1A, Ib=0.1A & ft=100MHz). These must be the Pre-Driver
transistors.
These are for the voltage gain stage right after the input differential amp. They do not mount on any heatsinks since the are not driving a lot of current at this stage. You said the Driver transistors must be very high voltage
(BVceo=250v) and 8 amps collector current. Do you have have any
recommendations? The ECG-87's & 88's have a (BVceo=250v & Ic=10Amps)
which seem to fit the required parameters for the Driver transistor, but
are twice the size of the old 11-0066B & 11-0072B which came in a TO-66
package. If you think we could use these, couldn't we etch a new Driver
board to except the TO-3 case which the ECG-87's & 88's come in, or
modify the existing driver board to except the TO-3 case. The driver James is refering to is for the monster amp, not the 2600. For the outputs James is recomending the motorola parts MJ21193's and MJ21194's. No question about these parts. I would use them in all SAE TO-3 output applications that are not using Darlingtons (older SAE stuff). For the TO-66, we need to find a TO-220 part that can be subsitituted. James did not have a part he could recomend at this time based on my last phone call. So i will have to dig around. The new Driver
board would only have to be 1/2 inch taller to except these transistors.
I have a picture of the new driver board for the SAE2500 & 2600 amps,
but when I attached it to this e-mail it is to large for your server at
your end, and is returned to me undelivered.
Are you sugesting that someone make a new board? Interesting Idea but you will also have to fab a new heatsink braket for it. I think we just need to do more searching becuase a TO-220 solution will drop right in with a problem. That what the TO-220 part package was desgined to do. Replace the more expensive TO-66 package with a plastic part. I have not had a reason to find some replacments yet, but James comments concern me. It may be that a compromise is in order out of necessity. Just for curiosity, send me a copy of your drawing directly. Every ones opinion would be greatly appreciated.
Regards, Bob Ludka
PS. I hope to take delivery of two SAE 2500 Amplifiers in the next few
days, which probably need some type of repair and transistors.
Best Regards, Mark Gurries ---------------------------------------------------------- Battery Charging and Power Systems Application Engineer Linear Technology,1630 McCarthy Blvd, Milpitas, CA, 95035 WRK(408) 954-8400 x3864 Email: gurriesm@... FAX(408) 428-9413 WebSite: ---------------------------------------------------------- Work & Hobby Related Website Info: Smart Battery Charging Systems: Model Railroad Club: ----------------------------------------------------------
|
sstinc:"First sstinc:Last"
Dear Bob,
It sure would be a lot of work to change from a TO-66 to a TO-3 package. Not only would
the board have to be changed but so would the heat sink that holds them. A better
choice, even though the package is larger, would be the Motorola "Quasi" TO-3P plastic
devices, MJW21191 (PNP) and the MJW21192 (NPN). These are 250 Volt devices specifically
designed for lower output capability OR as drivers. They are very good devices.
Unfortunately, the semiconductor manufacturers of the world have all totally abandoned
the TO-66 package. And for the most part, they didn't even replace the devices with the
TO-220 counterpart package. When I unpack I will make a mad search through all of my
documentation which is vastly more extensive than any of you have, to see if by chance
(or should I say lucky chance) I can find some TO-220 devices that will work as high
voltage drivers.
James Bongiorno
desertfox wrote:
toggle quoted message
Show quoted text
From: desertfox <desertfox@...>
sstinc:First sstinc:Last wrote:
From: sstinc:"First sstinc:Last" <jamesbongiorno@...>
To everyone,
I am only going by memory. There is a possibility that I am wrong about the model
numbers and if so I will correct this error when I unpack all of my documentation.
Rest assured that there was an SAE amp that was rated at 500 watts per channel and
I do have the schematic. Maybe I didn't pay close enough attention to the title
block as I thought it was a 2600. We'll soon find out. In the meantime my
recommendations for upgrades still apply. I strongly advise against using the
Toshiba replacements devices as power outputs mainly because of the awful SAT
corners. The Motorolas are significantly better which of course means less
sticking under overdrive and a slight increase in power output as well as more
linearity under load. All for now.
James
gurriesm wrote:
From: gurriesm <gurriesm@...>
Hello all,
I talked to James on the phone and it looks like James has a schematic
that is for a SAE monster amp that was never produced that is labled
2600. (A prototype that never got a model number but was started from the
orignal 2600 production schematics.) I still think it is the A1001 but
he does not think so. He schematics are still all packed so he cannot
verify. He just remembers the block diagram of a drawing labled 2600.
So some interesting possibilites of untold history of SAE AMP development
may exist in James vast SAE technical documentation. Cooool!!!!
rom: sstinc:"First sstinc:Last" <jamesbongiorno@...>
Dear Mark,
I beg to differ but I have a full blown schematic on the "2600" which clearly
shows 24 output devices per channel that is 2 blocks consisting of a driver
and 6 outputs for the positive rail and 2 blocks of a driver and 6 outputs
for
the negative rail all at a power supply voltage of +/- 120 volts.
Multiply this by two and you get 48 devices. What schematic are you looking
at?
James
Mark Gurries wrote:
From: Mark Gurries <gurriesm@...>
First sstinc:Last sstinc: wrote:
From: sstinc:"First sstinc:Last" <jamesbongiorno@...>
I almost forgot: there are 48 output devices in the 2600. If you used the
Toshiba parts it would cost you $864.00.
Nope, the 2600 has 16 outputs (8/chan) and was the 400Watt/Chan with a
fan that came out in 76-77. You are thinking of the huge A1001 at
500W/chan that has no fan that replaces the 2600 that was part of the
"01" line. But you are right about cost. As impressive as A1001 is,
that addition 1db of headroom just is not worth it size, weight or
potential repair cost. Best Regards,
Mark Gurries
----------------------------------------------------------
Battery Charging and Power Systems Application Engineer
Linear Technology,1630 McCarthy Blvd, Milpitas, CA, 95035
WRK(408) 954-8400 x3864 Email: gurriesm@...
FAX(408) 428-9413 WebSite:
----------------------------------------------------------
Work & Hobby Related Website Info:
Smart Battery Charging Systems:
Model Railroad Club:
----------------------------------------------------------
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To: James Bongiorno &
Mark Gurries
There has been a lot of correspondence these last few days about the SAE
2600 amplifier. Mark is right. There are 8 Output transistors, 4 Driver
transistors, and 4 Pre-driver transistors Per Channel. I have one of
these amps and I also have the service manual for it. The SAE2600 and
SAE 2500 are almost identical in circuitry, except for a couple of extra
diodes, different Output Transistors and a different power transformer.
I finally got the specification on the Toshiba 2SA1837(PNP) and the
2SC4793(NPN) which you recommend, which is ( Vcbo=230v, Vceo=230v,
Vebo=5v, Ic=1A, Ib=0.1A & ft=100MHz). These must be the Pre-Driver
transistors. You said the Driver transistors must be very high voltage
(BVceo=250v) and 8 amps collector current. Do you have have any
recommendations? The ECG-87's & 88's have a (BVceo=250v & Ic=10Amps)
which seem to fit the required parameters for the Driver transistor, but
are twice the size of the old 11-0066B & 11-0072B which came in a TO-66
package. If you think we could use these, couldn't we etch a new Driver
board to except the TO-3 case which the ECG-87's & 88's come in, or
modify the existing driver board to except the TO-3 case. The new Driver
board would only have to be 1/2 inch taller to except these transistors.
I have a picture of the new driver board for the SAE2500 & 2600 amps,
but when I attached it to this e-mail it is to large for your server at
your end, and is returned to me undelivered.
Every ones opinion would be greatly appreciated.
Regards, Bob Ludka
PS. I hope to take delivery of two SAE 2500 Amplifiers in the next few
days, which probably need some type of repair and transistors.
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sstinc:First sstinc:Last wrote:
From: sstinc:"First sstinc:Last" <jamesbongiorno@...>
To everyone,
I am only going by memory. There is a possibility that I am wrong about the model
numbers and if so I will correct this error when I unpack all of my documentation.
Rest assured that there was an SAE amp that was rated at 500 watts per channel and
I do have the schematic. Maybe I didn't pay close enough attention to the title
block as I thought it was a 2600. We'll soon find out. In the meantime my
recommendations for upgrades still apply. I strongly advise against using the
Toshiba replacements devices as power outputs mainly because of the awful SAT
corners. The Motorolas are significantly better which of course means less
sticking under overdrive and a slight increase in power output as well as more
linearity under load. All for now.
James
gurriesm wrote:
From: gurriesm <gurriesm@...>
Hello all,
I talked to James on the phone and it looks like James has a schematic
that is for a SAE monster amp that was never produced that is labled
2600. (A prototype that never got a model number but was started from the
orignal 2600 production schematics.) I still think it is the A1001 but
he does not think so. He schematics are still all packed so he cannot
verify. He just remembers the block diagram of a drawing labled 2600.
So some interesting possibilites of untold history of SAE AMP development
may exist in James vast SAE technical documentation. Cooool!!!!
rom: sstinc:"First sstinc:Last" <jamesbongiorno@...>
Dear Mark,
I beg to differ but I have a full blown schematic on the "2600" which clearly
shows 24 output devices per channel that is 2 blocks consisting of a driver
and 6 outputs for the positive rail and 2 blocks of a driver and 6 outputs
for
the negative rail all at a power supply voltage of +/- 120 volts.
Multiply this by two and you get 48 devices. What schematic are you looking
at?
James
Mark Gurries wrote:
From: Mark Gurries <gurriesm@...>
First sstinc:Last sstinc: wrote:
From: sstinc:"First sstinc:Last" <jamesbongiorno@...>
I almost forgot: there are 48 output devices in the 2600. If you used the
Toshiba parts it would cost you $864.00.
Nope, the 2600 has 16 outputs (8/chan) and was the 400Watt/Chan with a
fan that came out in 76-77. You are thinking of the huge A1001 at
500W/chan that has no fan that replaces the 2600 that was part of the
"01" line. But you are right about cost. As impressive as A1001 is,
that addition 1db of headroom just is not worth it size, weight or
potential repair cost. Best Regards,
Mark Gurries
----------------------------------------------------------
Battery Charging and Power Systems Application Engineer
Linear Technology,1630 McCarthy Blvd, Milpitas, CA, 95035
WRK(408) 954-8400 x3864 Email: gurriesm@...
FAX(408) 428-9413 WebSite:
----------------------------------------------------------
Work & Hobby Related Website Info:
Smart Battery Charging Systems:
Model Railroad Club:
----------------------------------------------------------
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To: James Bongiorno & Mark Gurries There has been a lot of correspondence these last few days about the SAE 2600 amplifier. Mark is right. There are 8 Output transistors, 4 Driver transistors, and 4 Pre-driver transistors Per Channel. I have one of these amps and I also have the service manual for it. The SAE2600 and SAE 2500 are almost identical in circuitry, except for a couple of extra diodes, different Output Transistors and a different power transformer. I finally got the specification on the Toshiba 2SA1837(PNP) and the 2SC4793(NPN) which you recommend, which is ( Vcbo=230v, Vceo=230v, Vebo=5v, Ic=1A, Ib=0.1A & ft=100MHz). These must be the Pre-Driver transistors. You said the Driver transistors must be very high voltage (BVceo=250v) and 8 amps collector current. Do you have have any recommendations? The ECG-87's & 88's have a (BVceo=250v & Ic=10Amps) which seem to fit the required parameters for the Driver transistor, but are twice the size of the old 11-0066B & 11-0072B which came in a TO-66 package. If you think we could use these, couldn't we etch a new Driver board to except the TO-3 case which the ECG-87's & 88's come in, or modify the existing driver board to except the TO-3 case. The new Driver board would only have to be 1/2 inch taller to except these transistors. I have a picture of the new driver board for the SAE2500 & 2600 amps, but when I attached it to this e-mail it is to large for your server at your end, and is returned to me undelivered. Every ones opinion would be greatly appreciated. Regards, Bob Ludka PS. I hope to take delivery of two SAE 2500 Amplifiers in the next few days, which probably need some type of repair and transistors.
|
sstinc:"First sstinc:Last"
To everyone,
I am only going by memory. There is a possibility that I am wrong about the model
numbers and if so I will correct this error when I unpack all of my documentation.
Rest assured that there was an SAE amp that was rated at 500 watts per channel and
I do have the schematic. Maybe I didn't pay close enough attention to the title
block as I thought it was a 2600. We'll soon find out. In the meantime my
recommendations for upgrades still apply. I strongly advise against using the
Toshiba replacements devices as power outputs mainly because of the awful SAT
corners. The Motorolas are significantly better which of course means less
sticking under overdrive and a slight increase in power output as well as more
linearity under load. All for now.
James
gurriesm wrote:
toggle quoted message
Show quoted text
From: gurriesm <gurriesm@...>
Hello all,
I talked to James on the phone and it looks like James has a schematic
that is for a SAE monster amp that was never produced that is labled
2600. (A prototype that never got a model number but was started from the
orignal 2600 production schematics.) I still think it is the A1001 but
he does not think so. He schematics are still all packed so he cannot
verify. He just remembers the block diagram of a drawing labled 2600.
So some interesting possibilites of untold history of SAE AMP development
may exist in James vast SAE technical documentation. Cooool!!!!
rom: sstinc:"First sstinc:Last" <jamesbongiorno@...>
Dear Mark,
I beg to differ but I have a full blown schematic on the "2600" which clearly
shows 24 output devices per channel that is 2 blocks consisting of a driver
and 6 outputs for the positive rail and 2 blocks of a driver and 6 outputs
for
the negative rail all at a power supply voltage of +/- 120 volts.
Multiply this by two and you get 48 devices. What schematic are you looking
at?
James
Mark Gurries wrote:
From: Mark Gurries <gurriesm@...>
First sstinc:Last sstinc: wrote:
From: sstinc:"First sstinc:Last" <jamesbongiorno@...>
I almost forgot: there are 48 output devices in the 2600. If you used the
Toshiba parts it would cost you $864.00.
Nope, the 2600 has 16 outputs (8/chan) and was the 400Watt/Chan with a
fan that came out in 76-77. You are thinking of the huge A1001 at
500W/chan that has no fan that replaces the 2600 that was part of the
"01" line. But you are right about cost. As impressive as A1001 is,
that addition 1db of headroom just is not worth it size, weight or
potential repair cost. Best Regards,
Mark Gurries
----------------------------------------------------------
Battery Charging and Power Systems Application Engineer
Linear Technology,1630 McCarthy Blvd, Milpitas, CA, 95035
WRK(408) 954-8400 x3864 Email: gurriesm@...
FAX(408) 428-9413 WebSite:
----------------------------------------------------------
Work & Hobby Related Website Info:
Smart Battery Charging Systems:
Model Railroad Club:
----------------------------------------------------------
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Hello all, I talked to James on the phone and it looks like James has a schematic that is for a SAE monster amp that was never produced that is labled 2600. (A prototype that never got a model number but was started from the orignal 2600 production schematics.) I still think it is the A1001 but he does not think so. He schematics are still all packed so he cannot verify. He just remembers the block diagram of a drawing labled 2600. So some interesting possibilites of untold history of SAE AMP development may exist in James vast SAE technical documentation. Cooool!!!! rom: sstinc:"First sstinc:Last" <jamesbongiorno@...>
Dear Mark,
I beg to differ but I have a full blown schematic on the "2600" which clearly
shows 24 output devices per channel that is 2 blocks consisting of a driver
and 6 outputs for the positive rail and 2 blocks of a driver and 6 outputs
for
the negative rail all at a power supply voltage of +/- 120 volts.
Multiply this by two and you get 48 devices. What schematic are you looking
at?
James
Mark Gurries wrote:
From: Mark Gurries <gurriesm@...>
First sstinc:Last sstinc: wrote:
From: sstinc:"First sstinc:Last" <jamesbongiorno@...>
I almost forgot: there are 48 output devices in the 2600. If you used the
Toshiba parts it would cost you $864.00.
Nope, the 2600 has 16 outputs (8/chan) and was the 400Watt/Chan with a
fan that came out in 76-77. You are thinking of the huge A1001 at
500W/chan that has no fan that replaces the 2600 that was part of the
"01" line. But you are right about cost. As impressive as A1001 is,
that addition 1db of headroom just is not worth it size, weight or
potential repair cost. Best Regards, Mark Gurries ---------------------------------------------------------- Battery Charging and Power Systems Application Engineer Linear Technology,1630 McCarthy Blvd, Milpitas, CA, 95035 WRK(408) 954-8400 x3864 Email: gurriesm@... FAX(408) 428-9413 WebSite: ---------------------------------------------------------- Work & Hobby Related Website Info: Smart Battery Charging Systems: Model Railroad Club: ----------------------------------------------------------
|
sstinc:"First sstinc:Last"
Dear Mark,
I beg to differ but I have a full blown schematic on the "2600" which clearly
shows 24 output devices per channel that is 2 blocks consisting of a driver
and 6 outputs for the positive rail and 2 blocks of a driver and 6 outputs for
the negative rail all at a power supply voltage of +/- 120 volts.
Multiply this by two and you get 48 devices. What schematic are you looking
at?
James
Mark Gurries wrote:
toggle quoted message
Show quoted text
From: Mark Gurries <gurriesm@...>
First sstinc:Last sstinc: wrote:
From: sstinc:"First sstinc:Last" <jamesbongiorno@...>
I almost forgot: there are 48 output devices in the 2600. If you used the
Toshiba parts it would cost you $864.00.
Nope, the 2600 has 16 outputs (8/chan) and was the 400Watt/Chan with a
fan that came out in 76-77. You are thinking of the huge A1001 at
500W/chan that has no fan that replaces the 2600 that was part of the
"01" line. But you are right about cost. As impressive as A1001 is,
that addition 1db of headroom just is not worth it size, weight or
potential repair cost.
Thanks for the information on the using the Motorola outputs.
Best Regards,
Mark Gurries (replying from home)
----------------------------------------------------------
Battery Charging and Power Systems Application Engineer
Linear Technology,1630 McCarthy Blvd, Milpitas, CA, 95035
WRK(408) 954-8400 x3864 Email: gurriesm@...
FAX(408) 428-9413 WebSite:
----------------------------------------------------------
Work & Hobby Related Website Info:
Smart Battery Charging Systems:
Model Railroad Club:
----------------------------------------------------------
------------------------------------------------------------------------
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First sstinc:Last sstinc: wrote: From: sstinc:"First sstinc:Last" <jamesbongiorno@...>
I almost forgot: there are 48 output devices in the 2600. If you used the
Toshiba parts it would cost you $864.00.
Nope, the 2600 has 16 outputs (8/chan) and was the 400Watt/Chan with a fan that came out in 76-77. You are thinking of the huge A1001 at 500W/chan that has no fan that replaces the 2600 that was part of the "01" line. But you are right about cost. As impressive as A1001 is, that addition 1db of headroom just is not worth it size, weight or potential repair cost. Thanks for the information on the using the Motorola outputs. Best Regards, Mark Gurries (replying from home) ---------------------------------------------------------- Battery Charging and Power Systems Application Engineer Linear Technology,1630 McCarthy Blvd, Milpitas, CA, 95035 WRK(408) 954-8400 x3864 Email: gurriesm@... FAX(408) 428-9413 WebSite: ---------------------------------------------------------- Work & Hobby Related Website Info: Smart Battery Charging Systems: Model Railroad Club: ----------------------------------------------------------
|
sstinc:"First sstinc:Last"
I almost forgot: there are 48 output devices in the 2600. If you used the
Toshiba parts it would cost you $864.00.
gurriesm wrote:
toggle quoted message
Show quoted text
From: gurriesm <gurriesm@...>
James,
If I had to replace my outputs on the 2600, I would have bought the
following:
2SD555 250V, 10A, 200W, Ft=15MHz
2SB600 200V, 10A, 200W, Ft=14MHz
Would you recommend these for the outputs?
By the way, Mouser has them at roughly $18/ea with a minimum order of 10.
So If I wanted to use these, it would be a $360 investment. Something
to think about for those interested in fixing the BIG amps.
Best Regards,
Mark Gurries
----------------------------------------------------------
Battery Charging and Power Systems Application Engineer
Linear Technology,1630 McCarthy Blvd, Milpitas, CA, 95035
WRK(408) 954-8400 x3864 Email: gurriesm@...
FAX(408) 428-9413 WebSite:
----------------------------------------------------------
Work & Hobby Related Website Info:
Smart Battery Charging Systems:
Model Railroad Club:
----------------------------------------------------------
------------------------------------------------------------------------
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sstinc:"First sstinc:Last"
Dear Mark,
DO NOT use those devices. They are not the better choice by far. Use the
Motorola MJ21193's and MJ21194's. Much better parts and MUCH cheaper. They
are available through Wyle and Newark and they don't cost anywhere near
$18.00 each. These Motorola devices are 250Vceo, 16 amps rated (but the chip
size supports 30 amps) and 250 watts, FT = 8MHz. And they are MUCH more
linear than the Toshiba parts with NO donkey's hind end in the sat knee.
James Bongiorno
gurriesm wrote:
toggle quoted message
Show quoted text
From: gurriesm <gurriesm@...>
James,
If I had to replace my outputs on the 2600, I would have bought the
following:
2SD555 250V, 10A, 200W, Ft=15MHz
2SB600 200V, 10A, 200W, Ft=14MHz
Would you recommend these for the outputs?
By the way, Mouser has them at roughly $18/ea with a minimum order of 10.
So If I wanted to use these, it would be a $360 investment. Something
to think about for those interested in fixing the BIG amps.
Best Regards,
Mark Gurries
----------------------------------------------------------
Battery Charging and Power Systems Application Engineer
Linear Technology,1630 McCarthy Blvd, Milpitas, CA, 95035
WRK(408) 954-8400 x3864 Email: gurriesm@...
FAX(408) 428-9413 WebSite:
----------------------------------------------------------
Work & Hobby Related Website Info:
Smart Battery Charging Systems:
Model Railroad Club:
----------------------------------------------------------
------------------------------------------------------------------------
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Brought to you by Sephora! Check it out here:
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Community email addresses:
Post message: SAE_Talk@...
Subscribe: SAE_Talk-subscribe@...
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