This circuit for frequencies up to a few tens of megahertz was found in the April 1978 issue of Radio Electronics magazine. The power supply must be symmetrical.
This is the receiver for the previous transmitter. The microphone is of the high impedance...
This circuit only detects variations in light falling on the sensor. The circuit uses an LM380 as a...
This simple component tester was found in the October 1997 issue of Electronics Now magazine. The...