This circuit has a calibration position. We found it in a 1977 publication.
This circuit provides a high voltage for supplying tube or other circuits from a 12 V battery. The...
Found in an EEE from 1970, this circuit supplies a voltage of 12 V DC x 10 mA current from the...
This VCO or Voltage Controlled Oscillator was found in a Popular Electronics from 1991 but can be...
