This timer, like the previous circuits, uses a currently uncommon integrated circuit. The time is given by capacitor C1 and R2 which has the range of values indicated in the diagram.
This amplifier was obtained in an Electronics Now based on the LM1875. The circuit must be powered...
This circuit was found in documentation from the 1980s. It is powered by the audio signal that must...
This circuit is from Motorola's Linear Databook from 1990. The integrated circuit used is no...