Found in a 90s Electronic Design, this circuit generates harmonics from a sinusoidal input signal. The components used are still common today.
This circuit can be found in a 1970 Motorola documentation. The circuit can be implemented with general...
This shield circuit with an optical coupler was found in an 90s EDN. The circuit can be used with...
This circuit is from 1977 documentation, and high current equivalent transistor must be used. The...