This circuit was found in the September 1984 issue of Radio Electronics magazine. The circuit is based on a 555 and a MOSFET consisting of a flasher that controls a buzzer.
In this circuit found in a 1991 publication we can use the 2N2646 unijunction transistor and the...
The circuit shown in the figure can act as a home repeater for AM signals from the output of an...
This circuit consists of a traditional amplifier version with complementary output using BD series...