Transformer Coupled Class A Amplifier

148

01:54:49

The way to juice as much power from a class A amp and increaae its efficiency is to decouple the load with a transformer rather than a capacitor. Now the efficiency is 26% but another issue has arisen. The frequency reaponse is quite poor. The low end is 40Hz (with significant attenuation). The high end is 20Khz (barely) after which the distortion increases. Output power is 30W and the power draw is 116W. 

published 10 years ago

Phildela

9 years ago

I want to build a hi fi quality class A amp with hexfets because they are common and cheap and operate more in the linear region biased in class A. However, all the circuits I try either have low output or have massive DC offset or the bias has little or no effect. Ive tried Pass labs PLH as well as the original JLH also Rod Elliots designs. When I put the Spice parameters into the transistors it all goes pair shaped! Question: Why, Is this simulator reliable or am I better off with LTSpice. Thanks, Phil

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.