Found in a 1968 documentation, this circuit provides symmetrical voltages determined by component values. The regulator is a shunt type.
This circuit consists of an adapter that allows the reading of low currents at various scales. A...
This antenna for the frequencies 146 or 440 MHz was found in a magazine 73 for Amateur Radio of...
Suitable for 12.6 V voltages at the output and currents of 2 A, this circuit was found in a 1965...