This is a simple audio amplifier project suitable for the workbench. It has it’s own internal mains PSU but this can be substituted for an external PSU for those constructions not comfortable working with mains electricity. It provides a pre-amplifier module, three-band equaliser and has output short-circuit and thermal protection and a maximum 5 watts…

This article shows you how to build a very simple FM transmitter from thirteen components (one of these you make yourself), a Printed Circuit Board (PCB) and a 9v battery. It should be mentioned that this unit will be illegal in some countries as it transmits on the FM band anywhere from around 70 to…