We found this circuit in documentation from National Semiconductor. For the medium wave range the coil consists of 50 + 50 turns of wire 28 in a ferrite rod.
This circuit allows the "recovery" of weak signals recorded on tape that correspond to programs. The...
This circuit uses two JFET such as the BF244 or BF245 and has an excellent gain with small...
This simple motor control for alternating current with triac was obtained in a European...