This circuit is from a 90s documentation. It has a hysteresis and uses a light sensing bridge. The circuit generates a 1000 Hz modulated 10 Hz signal. The signal must be applied to an amplifier.
We found this circuit for guitar training in an English documentation from 1989. The components are from...
This circuit produces a voltage drop in the first pulse, turning off the relay. On the second...
Readers who like sound or sound effects cannot fail to examine this interesting circuit. What we...