This circuit was found in Motorola documentation from 1969. The transistors are from that time. The pulses are 200 ns with 500 mA. Observe the high supply voltage.
This 1000: 1 voltage-controlled filter circuit was found in an Electronics Today International in a 1980s...
The difference of this 1982 circuit is the fact that it uses the input signal itself to obtain the...
The electrostimulator or electronic massager consists of a circuit that produces high voltage...