This circuit with two operating modes was found in the September 1989 issue of Radio Electronics magazine. Other operational amplifiers can be used. The power supply must be dual.
This circuit allows modulating the signal generated by a crystal oscillator. The circuit is from...
This circuit is intended for charging 12 V Nicad batteries, which corresponds to 10 common...
This 12 or 13.8 V stabilized source is suitable for experimental FM transmitters that require...