This circuit was found in an old MIT publication. The circuit uses a double triode and the indicator is a milliammeter from 0 to 500 uA. The supply voltage has not been indicated, but must be between 100 and 200 V.
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This circuit was found in an old MIT publication. The circuit uses a double triode and the indicator is a milliammeter from 0 to 500 uA. The supply voltage has not been indicated, but must be between 100 and 200 V.