[AMRadio] Heathkit battery sub

CL in NC mjcal77 at yahoo.com
Fri Dec 27 09:50:10 EST 2013

Forget the battery altogether.  Hook a diode to the hot side of the filament line, filter with 100uf or so, make up a voltage divider to ground and tap it off to establish 1.5 volts. The current demand by the ohm meter is minimal and the little bit of current drawn by the meter through those resistors will not effect readings.  That's how I have my Heath, Eico, and Triplett VTVM's set up.

Charlie, W4MEC in NC

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