Published in a PE Hobbyst Handbook of 1991, this sensor uses an integrated circuit that is unusual today. The circuit is based on a high frequency oscillator.
Created to serve as a booster for TV signals in the UHF band, this circuit was found in the March...
This circuit can supply output voltages from 50 to 250 V from an input voltage of 300 V. The...
Square, triangular and sawtooth signals are produce by this circuit. Frequency is adjusted by P1...