This circuit found in the February 1992 issue of Radio Electronics magazine is designed to adapt an audio signal for use in a computer's ADC. It can be adapted to operate with microcontrollers.
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...
This circuit uses a GE optical coupler. Equivalents can be tried. The circuit is from the GE...
This source of two voltages and two currents was found in documentation translated from Argentina. We...