We found this circuit in the October 1988 Radio Electronics magazine. The circuit is still current due to the components used, and changes can be made.
In the figure we present a circuit of a microphone signal conditioner using the SSM2167 integrated...
This transmitter emits signals in the FM range, reaching a few meters away. The modulation...
This circuit was obtained in an English publication of 1993. It is an amplifier for...