This circuit was found in a Japanese publication from the 1960s. It uses germanium transistors and is powered by a voltage of 22.5 V. The circuit includes the erasure oscillator.
This circuit was found in the February 1983 issue of Radio Electronics magazine. It is a 4-digit...
This filter that can use any operational was found in a French documentation from 1982. The power...
This dimmer constrols the temperature of a wire used to print images in wood or other materials....