This is a circuit suggested by Linear Technology in a 1980s documentation. The integrated circuit is from the era. Observe the input and output voltage.
The circuit shown was found in the National Semiconductor Linear Applications Handbook of 1994. The...
This circuit has visual and audible status indication using an oscillator. The circuit is from a...
With this circuit, we can have a remote frequency control of a tuned circuit. Lx is the coil of...