Hughes suggests this circuit in a 1968 documentation. The circuit uses old transistors that can be replaced with equivalents. MOSFET is the critical component of the circuit.
This circuit can use any general purpose NPN transistor and the accuracy depends on the tolerance of...
This circuit was obtained in a 1981 documentation. The warning system for this circuit consists of an...
This FM transmitter was found in a 1997 magazine but can still be easily assembled. 18-wire in the...