Just operating the relay with a function generator at about 5Hz for a few seconds will often sort these relays out. Putting some AC across the contacts at a few mA at the same time won't harm

Miguel, The GE Tunnel Diode Handbook (from 1961) describes tunnel diodes and back diodes and can be downloaded online. The Micro-semi PIN Diode Circuit Designers Handbook is, likewise,

What is the failure mode of these relays? If it is contact resistance, they can possibly be recovered by operating the relay with AC on the contacts. This is a common problem in some Harris

I have great respect for what Tek did before fully digital scopes. How can't you when every other worthy appnote has images of JW's famous 556 with damaged screen?! However, to me, Tektronix has died

Hello, first of all, I meant thing not think. Sorry, I am not doing well. As for the bathroom: please no! Tam -- With best regards Tam HANNA Enjoy electronics? Join 15k7 other followers by

Hello Folks, now I am somewhat "horny". Does anyone of you have a DEAD relais or two to spare, to send my way? Ill pay shipping and whatever the metal of the dead POS is worth, plus a red bull for

But: seriously. In that case presumably you think Smalltalk also did HP in, because HP used it embedded inside some of their test equipment. (Colorado Springs used Digitalk's Smalltalk/V, there may

LOL!  On the other hand, a shower might be a good place to clean a properly prepared scope (5xx series), especially in cold weather.  (When she's not there, of course!) -Dave

I fear that this is happening to me. My workshop is so full, it is forcing my motorcycles and cars outside and taking over my home office as well. Not encroaching into the bathroom, but getting

Ex-USMC 2246 Mod 6 Scope 1998 warranty date. Purchased by me in 2007, been working perfectly and passed all checks and to the best of my calibration capabilities (TM500 modules) been

Wonderful! Thanks for pointing this out. I have a few of these that I bought for my Type 576 as "just in case" parts. The ones I bought are bright white, not grey colored. Otherwise they are as

Hi Tam, Allow me to explain the bathroom quip. But first, I thought your description of the Tu-144 ferrying coal was pretty funny. One member of TekScopes (Magic Smoke) posted that he is slowly

I wanted to make everyone aware of the very poor reliability of certain Tek made relays. Almost every Tek made component was higher quality than industry made components. This is an exception. I think

That's great that it's still available! I can't vouch for it's substitution in the DC508A circuit but it appears to work okay in the DP501. It's also priced about 5x higher than it was when I bought

Hi Ed, The eBay ID he provided in his post takes you to one of Pam Kidd's (daughter of Deane Kidd) listings for a brand new relay for $5.00 and $7.35 USPS Small Flat Rate Box. That is a bargain. The

Need to get some clarification on the procedure steps in CAL06. In the 2465B Service Manual 070-6863-00 pages 5-20 thru 5-21. I have made it thru steps (a.) thru (v.). But getting unsure about

Read down in this and every message from the list where it says "unsubscribe" Roy Morgan K1LKY Western Mass

Devin, At the bottom of any message from this list is a link to unsubscribe. 73! Mark KA6WKE Website: https://www.ka6wke.net

Hello, I joined this list to learn a bit about tek equipment. Lots of surplus gear was coming in at the shop I work at, and I found the information here invaluable. Lots of very talented individuals

Hello, sorry, I do not get the bathroom quip. But: seriously. IMHO, SmallTalk is what did Danaher in. Especially the idiocy of having both SmallTalk and Java on the think, and NOT EXPOSING it to