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VTVM EICO 232 LM317 BATTERY CHANGE
#1

Did this a while ago. Transformer fused in out. Very stable ohms.


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#2

More of the LM317 battery replacement


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#3

More Eico 232 LM317 REPLACEMENT


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#4

I have a slightly older Eico where the previous owner rigged up a substitute for the battery by tapping off the filament winding of the transformer, all he used was some diodes, a resistor, and some large value, low voltage, electrolytics. It worked fine for me until I blew out one of the resistors on the Ohm meter section after I accidentally used to to measure some high voltage.
Regards
Arran




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