MENU

Fun & Interesting

Boonton capacitance bridge model 74-c 1962 test teardown

Video Not Working? Fix It Now

I was quite happy it was that easy to find and repair the problems, capacitor and potentiometer was the main problems, I also wounder why would they make a mains transformer that only supported 117V AC ?? only for USA ?? but why ?? Test frequency 100kHz, capacitance range 0.05pF to 11nF in 4 ranges, 100% tube based manual say 1962, 6AU6 = EF94 x 2 for the detector amplifiers, 6C4 = EC90 for the oscillator, 6X6 = EZ90 for the rectifier, and one OA2 150V regulator. --- #vintage #teardown #tube --- I use auto generated subs, i am sorry there are a few spelling errors, maybe one day they can do it better.. -- (Thanks to all my Sponsors / Traders / Swappers / Sellers / Buyers, without your support and constant flow of cool items in/out, none of this would be possible)

Comment