A class and push-pull

Posted on Dec 2, 2012

Pure A class is the most simple topology for designing an amplifier! The tube or the power transistor is loaded directly by the speaker (often thru a transformer, fro impedance matching!), and is biaised at the current necessary for full modulation (that means a maximum power dissipation for no input signal).

A class and push-pull
Click here to download the full size of the above Circuit.

The consumed to output power ratio is very low: 12.5% for a current source load (see PASS amplifiers), 25% for a transformer loaded triode with no grid current, 50% for the same triode in class A2 (with grid current) and 50% for a pentode (or tetrode). Un

Leave Comment

characters left:

New Circuits



Popular Circuits

Simple voltage controlled oscillator
Pure Sine-Wave Generator
Serial Servo Controller with Arduino
Wirelessly Powering a Swarm of Robots