Re: TDS3032 does not boot. LCD backl-ight and fan working.
Thanks David.
Unfortunately, holding the B-trig during power up makes no difference.
Benjamin
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
My original database was custom software on a Commodore 64. Due to limited memory, I had to have multiple databases, one for each class of components.
Large quantities are in anti-static bags, in small corrugated paper boxes that fit nicely into lager boxes on the shelves. Tape and reel are sorted and stored in open topped boxes with dividers to find each reel or reels of components. I have over 500 reels of SMD components, and the latest addition is a reel of 1000 78L05 in a SOT-89 package.
Michael A. Terrell
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-----Original Message----- From: Jose Luu <jose.luu@...>
Sent: Dec 4, 2018 3:15 AM
To: [email protected]
Subject: Re: [TekScopes] OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
I use small bags in bins.
Inside the bag, a paper label tells the type.
If too numerous: no bag, single part number in the whole bin. (Or 2 part
numbers with very different packages)
Most important: I use partsbox.io to keep track of the bins contents
On Dec 4, 2018 9:02 AM, "Michael A. Terrell" <mike.terrell@...>
wrote:
I use small coin envelopes for bipolar transistors. Then, if they cross to
the ECG/NTE system, the envelope goes into a drawer in the 20+ 50 drawer
cabinets in the shop. I started doing this in 1970, and it has worked well.
Anything that doesn't fit that system ends up sorted in part number order
in tray bins.
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
I use small bags in bins.
Inside the bag, a paper label tells the type.
If too numerous: no bag, single part number in the whole bin. (Or 2 part
numbers with very different packages)
Most important: I use partsbox.io to keep track of the bins contents
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Show quoted text
On Dec 4, 2018 9:02 AM, "Michael A. Terrell" <mike.terrell@...> wrote: I use small coin envelopes for bipolar transistors. Then, if they cross to the ECG/NTE system, the envelope goes into a drawer in the 20+ 50 drawer cabinets in the shop. I started doing this in 1970, and it has worked well. Anything that doesn't fit that system ends up sorted in part number order in tray bins. Michael A. Terrell -----Original Message----- From: ¸é±ð²Ô¨¦±ð <k6fsb.1@...>
Sent: Dec 4, 2018 1:24 AM
To: [email protected]
Subject: Re: [TekScopes] OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
Jim-your memory is fine. most likely meant both "boring" types in
similar package styles.....
¸é±ð²Ô¨¦±ð
On 2018-12-03 10:18 p.m., Jim Ford wrote:
Say, isn't the 2N3906 a PNP transistor? And 2N3904 is the NPN
complement? Or does my memory from 30 some odd years ago fail me? Thanks.
Jim F.
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
I use small coin envelopes for bipolar transistors. Then, if they cross to the ECG/NTE system, the envelope goes into a drawer in the 20+ 50 drawer cabinets in the shop. I started doing this in 1970, and it has worked well.
Anything that doesn't fit that system ends up sorted in part number order in tray bins.
Michael A. Terrell
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Show quoted text
-----Original Message----- From: ¸é±ð²Ô¨¦±ð <k6fsb.1@...>
Sent: Dec 4, 2018 1:24 AM
To: [email protected]
Subject: Re: [TekScopes] OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
Jim-your memory is fine. most likely meant both "boring" types in
similar package styles.....
¸é±ð²Ô¨¦±ð
On 2018-12-03 10:18 p.m., Jim Ford wrote:
Say, isn't the 2N3906 a PNP transistor?? And 2N3904 is the NPN complement?? Or does my memory from 30 some odd years ago fail me?
Thanks.
Jim F.
|
Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
Thanks, Renee'. The old memory is not what it used to be. Not totally
gone yet, though, evidently.
Jim
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------ Original Message ------ From: "¸é±ð²Ô¨¦±ð" <k6fsb.1@...> To: [email protected]Sent: 12/3/2018 10:24:31 PM Subject: Re: [TekScopes] OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number) Jim-your memory is fine. most likely meant both "boring" types in
similar package styles.....
¸é±ð²Ô¨¦±ð
On 2018-12-03 10:18 p.m., Jim Ford wrote:
Say, isn't the 2N3906 a PNP transistor? And 2N3904 is the NPN
complement? Or does my memory from 30 some odd years ago fail me?
Thanks.
Jim F.
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: "Vladimir _ via Groups.Io"
<vladimirshs@...> Date: 12/3/18 8:14 PM (GMT-08:00)
To: [email protected] Subject: Re: [TekScopes] OT - Method of choice
to sort and store assorted transistors (apart from having one bin for
every part number)
I thought about four drawers, each with maybe a dozen or sixteen bins
(4 x 3 or 4 x 4).
The four drawers would be Small and Medium PNP (or P-channel) - Small
and Medium NPN (or N-channel), Large PNP - Large NPN. I use the same system, except instead of drawers I use plastic
compartment boxes lined with aluminum foil. I also happen to have
several hundreds of "boring" small NPNs (basically 2N3906s and
similar), so that's a separate fifth group.
I keep track of individual transistors on my computer. For each group,
I have a folder with datasheets for each part number, with available
quantity and important specs (Vceo, Ic, fT, etc) in the filename.
There is also a backup copy of the entire thing on a flash drive.
This system makes it very easy to tell what's in stock and identify
substitutes. Once I decide on a specific part, all I need to do is to
look through that compartment, and I already know what the part looks
like because of the datasheet. It takes some care to set up and
maintain, but the space savings and ease of use are incredible.
--- This email has been checked for viruses by AVG.
|
Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
Jim-your memory is fine. most likely meant both "boring" types in similar package styles.....
¸é±ð²Ô¨¦±ð
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Show quoted text
On 2018-12-03 10:18 p.m., Jim Ford wrote: Say, isn't the 2N3906 a PNP transistor?? And 2N3904 is the NPN complement?? Or does my memory from 30 some odd years ago fail me?
Thanks.
Jim F.
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: "Vladimir _ via Groups.Io" <vladimirshs@...> Date: 12/3/18 8:14 PM (GMT-08:00) To: [email protected] Subject: Re: [TekScopes] OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
I thought about four drawers, each with maybe a dozen or sixteen bins (4 x 3 or 4 x 4).
The four drawers would be Small and Medium PNP (or P-channel) - Small and Medium NPN (or N-channel), Large PNP - Large NPN. I use the same system, except instead of drawers I use plastic compartment boxes lined with aluminum foil. I also happen to have several hundreds of "boring" small NPNs (basically 2N3906s and similar), so that's a separate fifth group.
I keep track of individual transistors on my computer. For each group, I have a folder with datasheets for each part number, with available quantity and important specs (Vceo, Ic, fT, etc) in the filename. There is also a backup copy of the entire thing on a flash drive.
This system makes it very easy to tell what's in stock and identify substitutes. Once I decide on a specific part, all I need to do is to look through that compartment, and I already know what the part looks like because of the datasheet. It takes some care to set up and maintain, but the space savings and ease of use are incredible.
|
Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
Say, isn't the 2N3906 a PNP transistor?? And 2N3904 is the NPN complement?? Or does my memory from 30 some odd years ago fail me?
Thanks.
Jim F.
Sent from my Verizon, Samsung Galaxy smartphone
toggle quoted message
Show quoted text
-------- Original message --------From: "Vladimir _ via Groups.Io" <vladimirshs@...> Date: 12/3/18 8:14 PM (GMT-08:00) To: [email protected] Subject: Re: [TekScopes] OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number) I thought about four drawers, each with maybe a dozen or sixteen bins (4 x 3 or 4 x 4).
The four drawers would be Small and Medium PNP (or P-channel) - Small and Medium NPN (or N-channel), Large PNP - Large NPN. I use the same system, except instead of drawers I use plastic compartment boxes lined with aluminum foil. I also happen to have several hundreds of "boring" small NPNs (basically 2N3906s and similar), so that's a separate fifth group. I keep track of individual transistors on my computer. For each group, I have a folder with datasheets for each part number, with available quantity and important specs (Vceo, Ic, fT, etc) in the filename. There is also a backup copy of the entire thing on a flash drive. This system makes it very easy to tell what's in stock and identify substitutes. Once I decide on a specific part, all I need to do is to look through that compartment, and I already know what the part looks like because of the datasheet. It takes some care to set up and maintain, but the space savings and ease of use are incredible.
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Re: Viewing hood part number for 7000 series scopes
Dennis: I will be glad to pay what you ask for the 7000 series viewing hood. Please send it to me and I will send off a check in the mail. I have several 7000 series scopes and I can use 2 CRT viewing hoods at this time. Gary Bosworth 139 E. Shrode Street Monrovia, CA 91016 On Sun, Dec 2, 2018 at 11:54 AM Dennis Tillman W7PF <dennis@...> wrote: Hi Gary,
If you're looking for one of these I have one I don't need.
You can have it for $20 + $15 shipping instead of the $50 + $30 shipping
this one is listed for.
CONTACT ME OFF LIST if you (or anyone else) wants it at dennis at ridesoft
dot com.
Dennis Tillman W7PF
-----Original Message-----
From: Glydeck via Groups.Io
Sent: Saturday, December 01, 2018 11:38 PM
Subject: Re: [TekScopes] Viewing hood part number for 7000 series scopes
There is one on eBay
/332196485087
On Dec 1, 2018, at 8:51 PM, John Griessen <john@...> wrote:
On 12/1/18 10:11 PM, Gary Robert Bosworth wrote:
My manuals do not list a part number for the viewing hood for any of my 7000 series oscilloscopes.
016-0154-00 is the Batman version -- pictures tomorrow...
--
Dennis Tillman W7PF
TekScopes Moderator
-- Gary Robert Bosworth grbosworth@... Tel: 310-317-2247
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
Actually I pretty much use one bin for every type. Mostly 6-12 bin plastic trays. Have hundreds of transistors, diodes, LEDs, dip ICs, radial caps, all classified by type and functions.
Resistors come 200pc per type, so go in a plastic shoe box in ziplock bag with bar codes.
SMD parts not on reel go in envelopes in shoe box with barcode labels.
I keep an MS access DB of all semiconductors and caps I buy. I don¡¯t keep quantity updated, but if I need a part, I can quickly tell if there is a likelihood it¡¯s in the shop.
Kjo
Sent from kjo iPhone
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Re: Master list of manual numbers by model?
Yes, found the Master Publication Index. It is marked Company Confidential so I have asked for a release from Tektronix. Stay tuned.
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Re: Large lot of Tek equipment for sale
same process here...as you are not the only one having similar thoughts!
Glad I live a looonnng way away
¸é±ð²Ô¨¦±ð
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On 2018-12-03 1:05 p.m., Robert Simpson via Groups.Io wrote: Sigh,
It's a good thing I don't live near there if I want to keep my marriage working. Just a few weeks ago I picked yet another scope (two dozen and counting). A fully loaded 7704A with two extra plug-ins and a non Tek probe. I didn't need it but at $130, what does need matter?
Bob
.
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
Not yet, but that is absence of evidence, not evidence of absence.
Even though it is humid here, rarely less than 50%RH, for FETs I would try to find bags similar to the ones used for storage in Farnell/Digikey/etc. That would be easier if you don't need ziplock bags, but can just use antistatic open-top bags.
When I do that, I fold over the top and staple it down; that has been sufficient to stop the components spilling out.
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On 03/12/18 23:01, Jack wrote: any trouble with electrostatics using those bag? Tom
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
My favorite way to store diodes, transistors, ICs, is to use a 4x6" pink zip-lock anti-static bag for each type. they fit perfectly in standard 4" cardboard stock bins, so you can fit many types per bin, and easily add or remove parts in sequence. this allows inventory to expand easily while keeping parts in sequence. mark the part number clearly with a permanent sharpie on the top portion of the bag, and you can quickly zip through them to find the part you want.
this is how I store all my tek and hp parts (including small pots, lamps, etc.), and thousands of 1N/2N numbers. where needed, I use a smaller gray anti-static bag inside the pink bag for very sensitive mosfets parts, or use anti-static foam to seat the parts inside the bag..
this has worked for me for 30+ years, and you can get the pink anti-static bags off ebay cheaply. I buy the cardboard stock bins for a local shipping box company. never had a damaged part in all these years.
I DO NOT recommend plastic acro bins or drawer cabinets. they are fine for hardware, just not for semiconductors. they are also a nightmare to expand as parts are added.
all the best,
walter
--
Walter Shawlee 2
Sphere Research Corp. 3394 Sunnyside Rd.
West Kelowna, BC, V1Z 2V4 CANADA
Phone: +1 (250-769-1834 -:-
We're all in one boat, no matter how it looks to you. (WS2)
All you need is love. (John Lennon)
But, that doesn't mean other things don't come in handy. (WS2)
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
On 12/3/2018 2:59 PM, Fabio Trevisan wrote: Hello Guys,
I come to ask your ideas (or how do you guys do) on the best way to separate and store assorted transistors.
With the years, I came to scrap and possess quite a number of transistors of all kinds (maybe a few hundreds).
I know that this amount is still few in comparison to what probably some of you guys have, but they're enough to annoy me quite much whenever I need to browse them, looking for a possible candidate for a new project or to use as a replacement of something that may have blown.
The thing is, I can't afford the space to have separate drawers for each possible model, so I would like to separate them in some sort of matrix, that is easier to browse later on.
Then, when I get to a given bin, I may need to look for the best part number only in that bin.
But I can't seem to find a good way to sort them...
I thought about four drawers, each with maybe a dozen or sixteen bins (4 x 3 or 4 x 4).
The four drawers would be Small and Medium PNP (or P-channel) - Small and Medium NPN (or N-channel), Large PNP - Large NPN.
Up 'til here, I think it's just common sense to have these 4 major separations and I can`t think of a better way to go about it.
Now, within each drawer, I can't seem to make up my mind about the best way to sort them...
By Vce (Vds) across one axis and by Ic (Ids) across the other?
Which 2 major selection parameters are the most useful?
I welcome your suggestion / wisdom...
Rgrds,
Fabio I've had great luck using snap lid pill boxes like those SMTWTFS type found in the pharmacy department of just about any big box store. I just put a type label over the day stamp -- Bert.
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
I use #1 coin envelopes folded in half. A small stack held together with a rubber band fit into a compartment in the Plano trays that I store them in. The trays and their compartments are numbered, and recorded in my transistors spreadsheet so I know what I have and where to find a part.
Dale H. Cook, Radio Contract Engineer, Roanoke/Lynchburg, VA
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
Hi Fabio, My view, by type and then note-book cross reference Vce Ic or whatever other characteristic..
--
Jack
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
any trouble with electrostatics using those bag? Tom
--
Jack
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
On Mon, 3 Dec 2018 17:04:15 -0500, you wrote: If you have more than a couple of each, get small pill bottles with
snap on caps, write the device number on top and keep them in order.
Make small trays slightly higher than the bottle and you can stack
them in a drawer. You could probably stuff a couple hundred in a
drawer.
Not my idea, I saw a collection of smd parts organized that way
(using smaller vials) and it was pretty impressive. I use bead organization containers for SMD parts. Locally, Michaels or Hobby lobby may have them. You get about 20 screw top plastic vials in a plastic case for not too much (look for sales). These are about 1 inch in diameter. I put a 3/4 inch colored dot label to discriminate between 1% and 5% resistors, for instance. Some containers are available in a 1 3/4 (or so) diameter. Those can be used for tape mounted SMD parts. Be aware that these containers are not necessarily anti-static. Things that need static protection may be left in the tape which can be cut or curled to fit the container. Other containers for beads, especially with locking tops, are good for screws and nuts. Harvey
Paul
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Re: TDS3032 does not boot. LCD backl-ight and fan working.
I would think if it is a dead NVRAM, holding in the B-TRIG button as you power it up will cause a reset. See if that gets it booting. Dave On Mon, Dec 3, 2018 at 3:34 PM benj3867 via Groups.Io <benj3867= [email protected]> wrote: Hi guys,
I have a TDS 3032 that does not start. When powered on, the fan spins, and
the LCD shows a white screen (i.e., back-light only). There is no beep, no
floppy seek sound, and no relay clicks - the scope simply stays this way
and does not attempt to boot. All power supply voltages are within spec.
Pressing the calibration button in the back during power on has no effect.
Any ideas as to what may be the cause of this would be most welcome!
Can it be a dead battery in the Dallas NVRAM chip? I know this can cause
weird problems at startup, but I do not know if this is one of them.
Thanks in advance,
Benjamin
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Re: OT - Method of choice to sort and store assorted transistors (apart from having one bin for every part number)
If you have more than a couple of each, get small pill bottles with
snap on caps, write the device number on top and keep them in order.
Make small trays slightly higher than the bottle and you can stack
them in a drawer. You could probably stuff a couple hundred in a
drawer.
Not my idea, I saw a collection of smd parts organized that way
(using smaller vials) and it was pretty impressive.
Paul
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows
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Michael A. Terrell
Jose Luu
Gary Robert Bosworth
Dale H. Cook