Found in 1980s documentation, this circuit uses a small transistor radio output transformer and a double potentiometer for frequency adjustment.
We found this circuit in the Linear Technology Applications of 1997. The circuit uses components from...
This short-range circuit can act as a wireless microphone. We got the schematic and the printed...
This CMOS version of the force gauge was found in a 1983 publication. In the CMOS version, the...