The frequency of this circuit, for the indicated components, is 1 kHz. Other operational amplifiers can be used, and the power supply must be symmetrical.
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...