This circuit was found in Motorola's 1968 documentation. It can be built on current equivalent components. The bridge diodes and the SCR must be in accordance with the current of the controlled motor.
This crystal-controlled oscillator was found in the January 1994 issue of Electronics Now. Other...
This circuit is from a 1964 publication. The circuit takes advantage of the component's resistance...
This is a converter stage found in old transistor superheterodyne radios. The circuit is for...