This 1000: 1 voltage-controlled filter circuit was found in an Electronics Today International in a 1980s edition. The circuit is based on components of the time.
We find this circuit in an American 1980s documentation. The unijunction transistor may be the...
This circuit generates a pulse of duration determined by the capacitor when an object interrupts the...
This circuit, published in 1978, has an interesting function. In the 2 V test position, the...