This two-port configuration of the 4001 was found in the April 1988 issue of Radio Electronics magazine. The timings are given by R1 and C1 as a function of the desired behavior of the circuit.
This circuit was found in the PC documentation from 1996. The maximum current of the motor is...
This circuit, suggested by National Semiconductor, is a tone control (bass and treble) with high...
This simple voltage doubler provides a continuous voltage at its output that is twice the peak...