This is the receiver for the previous circuit found in the November 1991 Radio Electronics magazine. The frequency is 2.2 MHz determined by the coils.
This shield circuit was found in an American publication from the 80's. The triac is of low...
In this circuit of a 1978 publication, the noise generated at the collector-base junction of any...
This circuit is from a year 2000 documentation. It generates pulses as fast as a battery or as...