DeoxIT is not intended for potentiometers - it is for switches. Caig FaderLube is intended for potentiometers and other controls.

What precisely are you trying to do? A 'scope display will be pretty much useless unless the sweep voltage is synchronized with the waveform being displayed, thus the development of triggered sweep.

I have spent 50 years repairing broadcast equipment. I strongly suggest that you pass the SX204 on to someone with a reasonably well equipped shop, including variable AC and DC supplies, rather than a

You would be much better off to sell the 577 to someone who wants and needs a curve tracer and buy a wall wart for the SX204. Using the 577 to power the SX204 is like using a Shelby Cobra to provide t

That patent has expired, but in any case I doubt that anyone is manufacturing variable autotransformers with tracks prepared as described in that patent. Certainly ISE is not ISE devices are Variacs w

Sorry abut that folks - I still haven't mastered my new email client - that should have gone to Miles and not to the list.

Miles - It is the largest volunteer genealogy project in the country. The site for West Springfield is at: https://sites.rootsweb.com/~mahampde/towns/westspringfield/index.html but there is not much i

I met Doc when I was a student in the MIT High School Studies Program in the mid '60s. Early on I spent some time wandering around and familiarizing myself with campus. In one corridor there were disp

The ugly of it is that someone else can uncorrect it.

Wikipedia misuses many technical terms - Wikipedia is worth what you pay for it.

Note that it is a variable autotransformer and not a Variac. Variac was originally a trademark of General Radio Company, and is now a trademark of ISE, Inc., for their brands of variable autotransform

Ernesto - That certainly is suitable for most people and most situations. My situation is not typical of many subbing this reflector. In my work and in my hobby activities I use almost exclusively equ

Dennis - Thank you for the information about Eduard Karplus. I enjoyed learning that he was involved in the design of two GR lines that I frequently use - the Variac and 874 connectors. I have a large

A professional needs equipment that will withstand frequent use, much more frequent than a hobbyist. It reduces long-term wear of the track. See US patent application 2,949,592.

General Radio Variacs are expensive not because they are a name brand, but because they are the best quality, including a proprietary silver alloy coating on the track that provides superior operation

If you want a quality autotransformer to handle large currents I strongly suggest that you forget new, bite the bullet, and buy a used General Radio Variac. GR Variacs are the Rolls Royce of variable

Six 8393s were used in the original release of the Tek 453 in the inputs to both channels and in both trigger generators and both sweep generators. All six were replaced by FETs in the second version

It was RCA who developed them - they were first announced by RCA in 1959. They were developed by RCA as a rugged, very compact, and very high performance line of tubes to compete with early transistor

I was given a Tek Type 200-1, Model A, Scope-Mobile Cart by a friend who was downsizing his shop before moving to a smaller house. He was using it for his little Tek 422 'scope (which I sold for him a

I agree with Chuck. I have a transistor tester built into the veteran Beckman DMM that I use in the field, and I use it for the same purpose that I use a tube tester - to weed out bad parts.