Found in American documentation, this circuit converts signals from the 27 MHz band for reception on an AM radio.
) Other operational amplifiers series, such as the MC34072, MC34074, MC35071, MC35072, MC35074 or...
In this circuit the photo-transistor signal is amplified by a Darlington step and then applied to a...
The flashing LEDs in this circuit simulate a working alarm and can serve as a deterrent to a...