WTB: Tektronix 015-0672-50 50 Turn Current Loop for TCP202
#buy
Hi,
I'm looking for a Tektronix 015-0672-50 50 Turn Current Loop to suit a TCP202 current probe.
Picture attached for reference.
If anyone has one of these they are willing to sell and ship to Japan, please let me know!
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Re: TM5003 fan noise / fan replacement
I was hoping for some model numbers, Thanks!! .. The fans in TM506 and TM5000 series main frames are just too loud...
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Re: TM5003 fan noise / fan replacement
I used the ETRI 141 Series Fan.? The 141-LV 0282 fan is EXTREMELY Quiet @ 28.0 dbA 55Cfm @ 1700 rpm and 1.9 mm Hg pressure.? There is a slightly louder version in the 141-LT 0282 somewhat louder @ 38.5 dbA and 74Cfm @ 2400RPM.and 3.6 mm Hg pressure.? These can be found used on occasion at good prices,? They are very expensive fans when bought new.? I am certain that there are some cheaper "knockoff;s" of these fans that could be found as well. ? ??
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Re: TM5003 fan noise / fan replacement
I found a direct replacement fan that is very quiet. ?It was originally used in a CNC machine. ?I will need to look up the specifications when I get to the house. ?I don’t keep all those details in my memory bank. ?I have one installed in my TM506 and it is barely noticeable.
. ?
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Re: TM5003 fan noise / fan replacement
a fan regulation, controlled by the output air temperature, would be nice.
Maybe the air flow of the original fan is known. The max. output air temperature at original air flow could be determined by a worst case test.
Whether all operating cases are then covered should be cleared. (Maybe every single bay must be temperature monitored too.)
IIRC continuous operation with free bays isn't intended (in worst cases).
?
Stefan
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Re: TM5003 fan noise / fan replacement
Roger,
I have two TM5006 that had the same issue. I swapped the 110V fan against a 220V model, plug&play.
With this mod the unit is close to silent with an airflow largely sufficient for normal climatic conditions.
cheers
Martin
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Re: TM5003 fan noise / fan replacement
Add series power resistor or ( if AC fan) plastic cap to drop voltage.
beware of the airflow, if in hot location or high power load plug-ins.
Jon
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TM5003 fan noise / fan replacement
Dear all,
My TM5003 fan seems like a jet plane taking off…
Is there a quieter option I could use as replacement?
I have seen a video of a guy that has replaced a TM5006 fan (110V) with a much quieter Low noise desktop fan.
Do you have any suggestion?
Best regards,
Roger
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On Oct 29, 2022, at 9:59 PM, Jennifer Crock via groups.io <collies13@...> wrote:
?Tek in the movies! This time its a 1982 Chuck Norris vehicle, 'Silent Rage' .. in which a medical renegade tries a life after death serum on a murderer shot dead by the Sheriff. Tektronix 547 50MHz dual time base scope that takes both letter type and I-series plug ins. In production from 1964 to 1975.
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Tek in the movies! This time its a 1982 Chuck Norris vehicle, 'Silent Rage' .. in which a medical renegade tries a life after death serum on a murderer shot dead by the Sheriff. Tektronix 547 50MHz dual time base scope that takes both letter type and I-series plug ins. In production from 1964 to 1975.
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I don't post much if at all-- but I couldn't help this one--
I was always horny for two vintage TEK scopes-- the 556 dual beam and finding the first TEK scope I had ever seen, touched and played with--
the TEK 549.? This was thirty years ago. The hunt was on...? In the mean time a friend gave me a non-functional TEK 315-D which I restored...? Abyssum abyssus invocat.
TEK 315-D
TEK 511A
TEK 555 X2
TEK 535
TEK 545A X3
TEK 547
TEK 513
TEK 514
TEK 7844
TEK 7104
TEK 7854
TEK 7623A
TEK 549
TEK RM561 (set up as a sampler)
TEK 565
TEK 321
TEK 321A
One of the TEK pocket scopes
TEK 585A
TEK 380
TEK 575 X3
TEK 113
TEK 105
TEK 106
TEK 496
TEK 495
The 7K series plug-ins
The letter plug-ins
The 500 series plug-ins
The calibration boxes
The 'scope probes
Spare CRTs
Spare toobs
I'm sure there's some stuff I've forgotten...
Regards,
Vollumscope.
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Jennifer:
Welcome to the group.
That is an impressive collection of hardware.
Had most of the same except for the 7104 and the curve tracers prior to downsizing due to space limitations and retirement.
ed
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yes indeed....I owned
( note the past tense) 2 tek 475 so I could have 4 channel
capabilities when rarely needed but it started as a
back-up.....now 8 different varieties some rescued from going to
trash....then there are the parts units and the TM500 series
stuff to maintain them and then the HP stuff etc.......keep
adding... seldom remove stuff...it is a horribly wonderful
disease.LOL
my family cringes at all the equipment......
搁别苍é别
On 10/25/22 6:28 AM, victor.silva via
groups.io wrote:
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I am not a collector, that's what we all say.
Someone who is not a collector owns one scope.? ;-)
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The number of parts scopes does not count, just like calories on
a vacation.
Harvey
On 10/25/2022 9:28 AM, victor.silva via
groups.io wrote:
toggle quoted message
Show quoted text
I am not a collector, that's what we all say.
Someone who is not a collector owns one scope.? ;-)
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I am not a collector, that's what we all say.
Someone who is not a collector owns one scope.? ;-)
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Re: Tek 577 unable to display more than 5 steps
On Mon, Oct 24, 2022 at 12:24 PM, Rogerio O wrote:
PROBLEM SOLVED!!!
The culprit was Q234, which was testing as two diodes.
I did not realized that the steps should be present at Q310 base, so I never checked this part of the circuit, especially because the DC bias was correct.
After replacing it by a 2N3565 the circuit began to work as expected.
Thank you very much to all, specially Ozan and Harvey for the continuous support.
Going back to calibration...
I will probably be back since as far as I remember I could not complete the Step Gen Output Z calibration?, but that is another story....
Roger
---- Congratulations for the repair.? Ozan
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Re: Tek 577 unable to display more than 5 steps
Also a critical note of the 577 calibration. If you are running in to difficulties in getting the vertical alignment to converge STOP and run through the procedure on the 177 its self. It has a separate calibration procedure. Then redo the vertical in the 577. Turns out there are 3 opamps in there. I chased my tail for about a week before I tracked that down. ? Zen ?
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From: [email protected] < [email protected]> On Behalf Of Harvey White Sent: Monday, October 24, 2022 6:32 PM To: [email protected]Subject: Re: [TekScopes2] Tek 577 unable to display more than 5 steps ? Excellent, glad to see that it works now. Harvey ? On 10/24/2022 3:24 PM, Rogerio O via groups.io wrote: PROBLEM SOLVED!!!
The culprit was Q234, which was testing as two diodes.
I did not realized that the steps should be present at Q310 base, so I never checked this part of the circuit, especially because the DC bias was correct.
After replacing it by a 2N3565 the circuit began to work as expected.
Thank you very much to all, specially Ozan and Harvey for the continuous support.
Going back to calibration...
I will probably be back since as far as I remember I could not complete the Step Gen Output Z calibration?, but that is another story....
Roger
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Re: AFG5101, arb func gen, looking for manuals....?
It seems I made a typo... The number I provided for the Instrument Interfacing guide was actually for the Instruction Manual (that I have...)
Here are the correct numbers:
Instrument Interfacing Guide (part no. 070-6930-00)
Reference Guide (part no. 070-6761-00)
Regards,
Jared
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Re: Tek 577 unable to display more than 5 steps
Excellent, glad to see that it works now.
Harvey
On 10/24/2022 3:24 PM, Rogerio O via
groups.io wrote:
toggle quoted message
Show quoted text
PROBLEM SOLVED!!!
The culprit was Q234, which was testing as two diodes.
I did not realized that the steps should be present at Q310 base,
so I never checked this part of the circuit, especially because
the DC bias was correct.
After replacing it by a 2N3565 the circuit began to work as
expected.
Thank you very much to all, specially Ozan and Harvey for the
continuous support.
Going back to calibration...
I will probably be back since as far as I remember I could not
complete the Step Gen Output Z calibration?, but that is another
story....
Roger
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Re: SC 503 Enhance/Integrate removed on later units
Hi Ke-Fong Lin,
?
for me it's logical to change the PCB rev: something has changed.
Maybe the board material has changed too, but I think the point is that the Enhance/Integrate functionality has been removed. (But why?*) Layout changes cost money – they wanted smallest effort.
?
And yes, I think your "retrofit" idea could be possible. Your photos show the same boards, one just less populated.
?
*Maybe some parts became too expensive for too low sales. One unit was $2850 in 1981 and $3440 in 1984 w/o Enhance/Integrate.
Maybe Enhance/Integrate was removed, because buyers should buy something else/new.
Just guessing.
?
Stefan
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Jared Cabot
Jennifer Crock
Michael W. Lynch
Michael
Stefan
Martin
Froggie the Gremlin