This circuit makes use of a mechanical delay line to produce the reverberation effect. This is a '80s setup, showing both channels for a stereo system.
This simple SCR alarm circuit was found in an old Poptronics, but can be easily assembled as all...
We adapt this circuit of Radio Electronics - March 1990. The magazine no more exists, but the...
TR1 must be mounted on a heatsink in this circuit. Voltage output is 8.6 V but this value can be...