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Re: Variac's
<steve.purcell.k@...> wrote: I have never worked on tube equipment where I thought it was necessary. I usually use my variacs for power supply troubleshooting where I already know something is
By David Hess · #86442 ·
465B Service manual
In order to ascertain serial number coverage of most Tektronix manuals (other than what you see on the front cover from time to time) Look at the parts list sections and the change sections The 10000
By Artekmedia <manuals@...> · #86441 ·
Re: replacing 475 psu electrolytics
Here's the pattern I use: http://www.auroragrp.com/agi/tek/cap-adapter-sngl.pdf I use long bare #12 wires, about 10 inches long with standoffs formed at the PC end. That way I can thread the new cap
By Paul Amaranth · #86440 ·
BENCH BUILT SIGNAL ATTENUATOR PICS
Here's the link to the pics: http://groups.yahoo.com/group/TekScopes/photos/album/2058104093/pic/list
By RonC <thepostman6801@...> · #86439 ·
replacing 475 psu electrolytics
I want to replace electrolytics in my 475 and not to worried about keeping the old cans. I have seen reference to using a "daughter" board to make the grounding through A9 with a modern radial lead
By jonathanrwbrooks <jonathan@...> · #86438 ·
Re: Variac's
Steve, This has been discussed MANY times in this forum. Search on the messages for "variac". Consensus is that use of a Viarac is a bad method for anything with a SWPS i
By ditter2 · #86437 ·
Re: Possible P6042 part...
Well, data point - I have 2 P6042s and I had 2 bad cables and no bad transformers. I think the cable design was so bad that the probe usually stopped working and was put away before the transformer
By David DiGiacomo · #86436 ·
Re: Variac's
Variac was a trademark of the General Radio Company. There are also Powerstats out there. There are several over on the "evil empire", just search on "Variac". Don't gamble your priceless antique on
By Richard Solomon <dickw1ksz@...> · #86435 ·
Re: Variac's
<steve.purcell.k@...> wrote: The Chinese variacs I've checked out have been OK. You would probably want to derate them a bit, especially for extended use. On the other hand, used ones often go
By David DiGiacomo · #86434 ·
Re: Possible P6042 part...
Klaus, If you paid $200 each and the seller did not warrant them (no returns), then you are very lucky. As mentioned, the most common P6042 (and A6302/TCP202) failure is a broken transformer. If you
By ditter2 · #86433 ·
Variac's
Hi All, I'm getting set up to work on tube equipment and I'm under the impression that with old and unknown tube instruments it's best to bring up the voltage slowly using a variac while monitoring
By Steve Purcell <steve.purcell.k@...> · #86432 ·
Re: BENCH BUILT SIGNAL ATTENUATOR
Sorry, I should have put a space in all the spots showing ohm measurements, it looks like it say 500ohm, but should be 50 ohm and 75 ohm. Thanks!
By RonC <thepostman6801@...> · #86431 ·
BENCH BUILT SIGNAL ATTENUATOR
I've recently built a selectable signal attenuator to use with my signal generator. I needed a 50mVpp square wave to test wave forms on a device's circuits,and my SG has a -20dB adjustable
By RonC <thepostman6801@...> · #86430 ·
Re: Service manual
there are lots of free versions but they are all image scans, and some not so good. for the 465B (hi or lo version) i highly recommend: http://artekmanuals.com/ $5 searchable (OCRed) with schematics.
By pdxareaid · #86429 ·
Re: Service manual
http://bama.edebris.com/manuals/tek/465b/ ? ?? All The Best, Rich D. ________________________________ To: TekScopes@... Sent: Tuesday, January 22, 2013 3:04 PM Subject: Re: [TekScopes]
By DiPaolo Richard <kathnrich@...> · #86428 ·
Re: Service manual
I have an original manual for that model, no serial number on it.? But it's not free; I was keeping it for reference but might be willing to part with it for maybe a trade of something or just money.
By Bob Albert <bob91343@...> · #86427 ·
Service manual
Does anyone know where I can get a free service manual for a 465B scope, ser no. 104467?
By chrisfordbell · #86426 ·
Re: "Event logging" T & M equipment?
On 22 Jan 2013 at 16:08, TekScopes@... wrote: Running an APC UPS without batteries is fraught with problems, even if it will power up correctly, many wont. Running with bad batteries will
By Dave B <dave@...> · #86425 ·
Re: Possible P6042 part...
I bought three P6042s over the last few years and all of them had cable failures. Tektronix did a lousy job on the strain relief where the cable enters the enclosure. I just shortened the cables to
By klauszietlow · #86424 ·
Re: "Event logging" T & M equipment?
Dave, I did this years ago for nothing. All of the APC SmartUPS Uninterruptable Power Supplies monitor the power line and report anomalies (high or low voltage out of range, spikes, dropouts, etc)
By Dennis Tillman W7pF · #86423 ·