[Test-Equipment] PACO C-20

[k4pf at juno.com]

Hi,

The military nomenclature for that 100K pot is RA30NASD104A.
I checked eBay, but no joy.  That "A" suffix is important,
that means it's a linear pot.

I changed out a similar main pot in my Sprague TO-4 R/C bridge.
In the TO-4 it was originally 7.5K, I replaced it with a 20K pot, 
requiring a proportional increase in the value 
of the fixed resistor in the other leg of the capacitance bridge.

73,
Ed Knobloch

> Barry wrote
>I recently bought a non-working PACO C-20 Capacitance checker.
> Unfortunately, it has a burned-out transformer and a broken pot.  A new
> transformer will run $75 and I haven't found a source for 100K, 
> wire-wound,
> 4W (or better) pots.
>