I did notice that listing. I sent him a note mentioning that the 1N5767 is not obsolete. Greg

Me and two lab partners designed a "computer too back in the 1980's for an EE class.  I should still have my write-up.  This was 4004/8008 time frame or 1980's. It was a microprogrammed hardware

if it helps I found a guy on Ebay selling groups of 3 for 10 bucks. It appears that he has 12 available a the

Been there, done that, for both my 2465, my 2465A, my 2465Adm, both my 2465B's and my 2467B.... But with respect to the original posting: "weak read out". Did you try tweaking the Grid Bias?

I am sure there is a mountain of good info here in this group about how to fix and care for a 2465x, but not sure this has been compiled as a tutorial per se. For something close to that I would

While browsing Tunnel diodes I found this interesting article covering Russian TDs... http://welcolab.wixsite.com/discovery/1-tunnel-diodes-xref

Dave, In reference to your comment regarding the sky-high pricing of the 1N5767, it's become a little tough to find any PIN diode that has reasonable characteristics coupled with a price these days.

The club was in Orlando, Florida, 'Central Florida Commodore User Group'. The PET did use 16Kb chips, the C64, SX64 and C128 used the 64Kb chips. One of my best tools for finding bad ram was the tip

Oops, I apologize ! I found the Tek Wiki Relay page : http://w140.com/tekwiki/wiki/Miniature_relays It has most of what I was looking for, but perhaps not all have photos ( of front &

hi, Could we have an added TekWiki W140.com page devoted to all Tek Relays ? - Photos of front & back of each relay, ( with relay diagram, Tek part# & coil Ohms) - specs, and - in which

Well, these days I use JD1914 12V SPDT heavy duty relays in one of my products. Beware of a lot of fakes out there. The fakes lack a copper braid conductor augmentation and this results in a

Well Chuck, That was my scheme when I built my reflow oven.  I bought a new Black and Decker which was identical to the one she was using and offered a switch. It was rejected with the observation

I don't understand... A toaster oven seems like a perfect place to process transformer cores... with a little modification, it makes a really good reflowing oven for SMD circuit

My latest Tektronix stuff is effectively a TDS640A and a TDS540A.  They're going to be difficult enough to fix if they have problems.  I did get a lunchbox scope to fix for someone.  Other than

Dave, I pushed the envelope when I "cooked" the 576 HV Transformer cores to separate the two halves in the toaster-oven. The wife is long-suffering, but also aware that I am showing serious signs

That should make a difference in the signal displayed. Thank you for the feedback Chuck! Craig

Your android cell phone runs on Java. You may not like using such bloated software in a piece of test equipment, but doing so cut years off of the development cycle. RAM and Flash storage are cheap

My late uncle, was a part of the Manhattan Engineering District during WWII, and was a part of all of the H-Bomb blasts done in the Marshal Islands (Paved Tiger, etc...) ... Had the bathtub in his

It is a really bad idea to seal a relay in an atmosphere of air. The minute arcing that occurs when the contacts switch will turn the atmosphere in the relay case to a soup of nitrogen oxides, which

Yes, that is poorly written. Tektronix upped the "reference" frequency from 50KHz to 6MHz, for the 2465. If you look inside of the SG504, you will find a little slide switch that allows you to