We found this circuit in a 1967 American documentation. It is a transmitter for animal research, monitoring intestinal pressure. The operating frequency is 22 kHz.
We find this circuit in an American 1980s documentation. The unijunction transistor may be the...
We found this circuit in an Electronics World of 1967. The components are of the time and...
This simple circuit can be used to power a simple communication system using ordinary telephones....