This simple wireless microphone circuit for the MW band was found in an old American documentation. The coil is the oscillator of an old MW radio.
We found this circuit with an operational transconductance amplifier in the Motorola Linear...
We found this circuit in the 1994 Linear Applications Handbook by National Semiconductor. The...
In the figure we have a differentiator with the LM3900 transconductance amplifier. The circuit is...