This simple circuit for the 3 to 30 MHz range was found in the Electronics Experimenter Handbook Special Projects of 1983. The coils consist of 10 and 50 turns of 32 wire on a 1 M x ½ W resistor.
This circuit was obtained in documentation on medical applications from 1966. The circuit is used in...
This circuit, which appears from other sources on this site, converts a voltage into a current....
This interesting circuit makes the needle of a microammeter oscillate at random, imitating a...