This circuit for incandescent lamps was found in the January 1980 Radio Elecronics magazine. The sensitivity can be controlled by a potentiometer and the microphone used is of the dynamic type.
The idea of this 1982 Experimenters Handbook circuit is to generate an RF signal in L2 that can be...
This conventional circuit is from Motorola's 1993 Linear Interface ICs. The power source must be...
We found this circuit in an Elettronica Pratica magazine [1977]. The edition is number 9 and the...