This circuit is from the 1990 Motorola Data Databook. The circuit can be implemented with equivalent transistors. The power supply must be symmetrical.
We found this circuit in a Hands On Electronics from the 90s. The delay is given by the formulas...
This is one of the many universal motor controls that the reader can find on this website. The...
This experimental short-range transmitter uses a low-impedance microphone, low-impedance phone, or even...