Found in American documentation from the 90's, this circuit can be implemented with modern equivalent components. Observe the symmetrical power supply.
The simple speed control for DC motors shown in the figure can control loads up to 2 amps. The...
This logarithmic gain operating configuration was found in the June 1994 Electronics Now magazine. The...
General purpose, up to 8 A SCRs can be tested with this simple circuit. In special the circuit is...