Antique Electronics and Vintage Solid State
Western Electric KS-10376 Null Voltage Test Set
Somewhere along the way I picked up a Western Electric KS-10376 Null Voltage Test Set, made by Leeds & Northrup. It's basically a three-decade Kelvin-Varley Divider with a final two-decade precision potentiometer and a galvanometer, with a switching arrangement to either connect it as a potentiometer for voltage measurements or as a Wheatstone bridge with a 10,000 Ω reference resistor for resistance measurements.
…Weller 8200 Repair
I have a Weller 8200 soldering gun from my childhood. The bakelite case was pretty beat up, and held together with old dried-up electrical tape.
One half was intact ...
... but the other half was broken into several pieces, was missing the louvers, and had a big chip missing.
…URM-105C ME-77C Battery Replacement
I bought a URM-105C off of George Rancourt at Deerchester many years ago, along with a URM-25F. George had refurbished them nicely. But I ignored the warning on the meter.
And the AA batteries leaked and corroded the holder.
…HP 410B restoration
I've been working off-and-on at restoring an old HP 410B. The fellow who sold me my HP 606A signal generator at the MIT flea many years ago practically forced his HP 410B on me. I protested that I already had a 410C, but he really wanted it to go to a good home, so I paid him a nominal sum for it. …
Triplett 310 VOM repair
I'm working on a pair of beat-up Triplett 310 VOMs that don't respond to voltage.
I've popped the front cover off, but I can't figure out how Triplett intended us to work on the darn thing.
There isn't enough slack in the wires to fully separate the front from the back.
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Weston Analyzer Model 980
I'm working on this old Weston Analyzer Model 980 VOM.
I haven't found a manual for the plain Model 980, but I did find a manual for the Model 980 Mark II. Anyone know of a source for a manual for the original 980?
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