This high-Q low-pass filter was found in the October 1990 issue of Radio Electronics magazine. The frequency depends on the capacitors used and is on the order of a few tens of hertz.
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...