This circuit with the XR2206 IC squares the value of a voltage. The circuit was published in the April 1978 issue of Radio Electronics magazine and should be powered by a symmetrical 15 V source.
The circuit shown in figure 1 serves to control a servo motor with a current of up to 200 mA. The...
The L3 coil is what basically determines the resonant frequency, around 1 MHz, in this oscillator found...
This circuit was found in a 1973 Radio Elettronica magazine. The Italian magazine no longer...