The FET can be a BF245, and the other transistors can be the BC548 and BC558 in this simple AM receiver. Adjust R4 for the best sound. The coil has 20 + 60 turns of wire 28 in a ferrite rod.
The first circuit we present is ideal for matching the low impedance of transducers, such as...
Found in Linear Technology documentation, this amplifier requires a symmetrical power source and...
The maximum frequency of this circuit depends on the operational, reaching a few hundred...