This circuit can be used to power 6, 9 or 12 V devices in your car. The maximum current is 1.5 A. The circuit is from a 1983 Electronics Hobbyist Handbook.
We found this circuit in the Radio Electronics magazine of January 1986. The frequency is given by the...
This circuit has a type of bias called "virtual earth" providing good gain, given by R2. The...
The figure shows how to convert a rectangular signal into a triangular signal using an integrator. The...