This circuit was found in the November 1992 issue of Radio Electronics magazine. The circuit has an amplification stage for the relay. The relay is rated at 12 V.
The figure shows the equivalent circuit for the LM381 audio preamplifier IC. The circuit was found...
The circuit that we will see below uses an element of the semiconductor family that is not yet...
An oscillator that uses two gates is not suitable for critical applications, as it tends to pick...