The figure shows the equivalent circuit for the LM381 audio preamplifier IC. The circuit was found in the February 1990 issue of Radio Electronics magazine.
Applying a 38 kHz signal at the input of this circuit (multivibrator) we can have stereo...
This circuit generates high pulses from a sinusoidal input, using SCRs for this purpose. The...
This circuit was found in a Popular Electronics from the 90s. The circuit uses common components...