readrite: Changes to Model 431
ID: 617692
This article refers to the model: Tube Tester 431 (Readrite Meter Works; Bluffton (OH))
readrite: Changes to Model 431
30.Mar.23 15:38
357
Phillip Clay (USA)
The schematic does not exactly match the units built. A 500 ohm resitor is in the shadow meter circuit. The 5 ohm resistor is .5 ohms.
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