Kridnix. Working With Three-Phase Power: Introduction to Electricity. Electronics Tutorial. Chapter 10: Computers and Electronics -- Build a simple 1 watt audio amplifier. A simple 1 watt audio amplifier The solderless breadboard makes it easy to experiment with additions to the radio circuit. In this section, we will build a simple amplifier, so that a whole room can hear the radio through a speaker. Our amplifier will not be ear shattering, since we have made it as simple as we can to build, but the output is pretty impressive for a single transistor.
Click on photo for a larger picture With the amplifier, our radio looks like the photo above. Below is a closeup of the amplifier section: We carry all the parts for the amplifier (except the battery) in our catalog. The amplifier needs these parts: An MPSW45A Darlington transistor This is the main working part of the amplifier.
Using the labeled grid as before, the parts are connected this way: A more permanent version As before, we can copy the circuit onto a printed circuit board and solder all of the parts firmly in place. How does it do that? The heart of the amplifier is the transistor. Del.icio.us Google. Electronics Lab - Home. Electronics Club. Doctronics. Engineering ToolBox. Bitsbox.