Class A single transistor powered by smartphone and charger.

221

01:28:34

     The transistor is a 2SD1593 or equivalent, with a very high gain factor (beta) and average current. Features: Input L + R with low pass filter, bootstrap and Boucherot filter. The 22 ohm resistor and the bulb in the diagram are replaced with a 22 ohm speaker, from a Grundig antique TV, for example. (oversized). The bulb illustrates the useful audio signal output and the 22 ohm resistor illustrates the DC polarization of the transistor through the oversized speaker coil. Circuit made practically!

published 7 years ago

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.