This small transmitter appeared in the March 1989 issue of Radio Electronics magazine. The two-transistor circuit used an electret microphone and had a range of a few dozen meters.
This is the typical circuit of an FET amplifier stage in the common source configuration. The circuit is...
This circuit is interesting for experiments and can be part of the bench in the form of a module. The...
This oscillator can use any CMOS inverter. The circuit is crystal controlled and was found in the...