This simple two-transistor FM transmitter was found in the November 1991 issue of Radio Electronics magazine. The circuit has a 2 + 2 turn coil of 28-gauge wire with a diameter of 1 cm.
This circuit, which uses only common transistors, was obtained from a 1988 publication, but can be...
The integrated circuit used in this filter is not very common today, but the configuration can be implemented...
Published in Radio Electronics magazine in March 1963, this circuit uses 4 transistors of the...