High efficiency 4V supply QRP amplifier

Low voltage, high efficiency QRP RF amplifier project @ circuitsalad.com This is an example of a high efficiency QRP transmitter designed to work at very low supply voltages (3v-5v). It can produce 2 watts a 4 volt supply @ 70% efficiency. It uses small, inexpensive switching mosfets. The primary requirement for these mosfets is low […]