This circuit was found in a 1977 timer cookbook. The circuit can generate signals with up to 99% active cycle. The FET can be BF245 or MPF102 and the basic frequency given by R1, R2 and C1.
This circuit was found in old documentation. The components can be replaced by modern ones. The...
This transistor circuit consists of a well-known bass and treble control configuration. The...
With the circuit shown, you can have a fast response with a Darlington configuration. The circuit is...