This control for 1/15 HP motors with 5,000 rpm for 115 V power grid was suggested by a Motorola circuit manual from 1968. The SCR supports more modern equivalents.
The frequency of this circuit can be programmed by a control voltage. The control circuit is CMOS...
This transistor class B 5 W amplifier was found in a 1969 Mullard documentation. The transistors are...
This circuit was obtained from an Analog Devices manual from the 90's. The integrated circuit is...