This is the receiver circuit for the previous remote control published in the same Radio Electronics magazine of November 1987. The sensor is a common phototransistor.
The circuit shown here can produce frequencies from 100 kHz to 2 MHz. The inverter can also be...
This receiver was found in an article in Electronics Now magazine in March 1994. The coils are...
The operational amplifier used on this 1968 circuit is not common today. However, the setting can be...