The figure shows a way to apply gain control to the LM3600 OTA. The circuit is from a Radio Electronics from July 1988.
This 1000: 1 voltage-controlled filter circuit was found in an Electronics Today International in a 1980s...
In the figure we show how to supply a DC motor from 6 to 12 V with alternating current. The diodes...
Found in a Radio Electronics we have in the figure a circuit to disconnect an SCR with direct...