This circuit was found in the December 1984 issue of Radio Electronics magazine. The circuit has a control voltage range of -15 to 0 V requiring a symmetrical source.
The sensor in this circuit is a BA315 diode. Other diodes can be experimented, but this is one...
The figure shows how to implement the AND function with a Norton LM3900 operational amplifier. The number of...
A single high-power transistor MJ15003 is used in the circuit in the figure to generate strong...