The figure shows a remote-control receiver working the 27 MHz band, very popular in the 60’s. The circuit us from a February 1961 Radio Electronics magazine.
In the figure we show how to use a 555 to control an SCR or another type of thyristor. Resistors R1, R2...
This circuit activates one of the selected circuits with a touch of a switch, keeping it...
This powerful FM transmitter was found in 1992 documentation. The circuit requires a 12 V source...