This circuit is the receiver for the previous transmitter modulated by an audio signal. The transducer is a ceramic capsule, in which case the circuit becomes ideal for telegraphic transmissions.
Texas Instruments PCM5242 Audio Stereo Differential-Output DAC is a monolithic CMOS integrated...
Emitt This crystal-controlled oscillator can generate signals from 100 kHz to over 30MHz. The...
With this circuit it is possible to fire an SCR from the light that falls on a phototransistor. The circuit...