This circuit generates short pulses. The transistor can be a 2N2222 or BC548 and the frequency is given by the resistors and the capacitor that can be changed.
The input resistance of this circuit is 60k and the pass band from 20 to 20kHz. The circuit is...
This effect circuit for guitar and guitar was found in a 1974 documentation. The circuit has...
This circuit was found in documentation from the 70s. The transistors are from that time, but the...