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.
This circuit split the voltage of a Power supply allowing it to be used as dual supply. The limit...
This modem circuit using a 4046 PLL was found in the October 1994 issue of Electronics Now. The...
This simple circuit presents a voltage gain of about 1,500. The input impedance is high and the...