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.
This circuit is from a 1979 publication, using displays of 7 segments of common cathode. The...
This is one of many zero crossing detector that can be found in this section. It was found in...
This circuit can be used in physics experiments, in ionization and in several other applications. The...