Class-AB Amplifier with Preamplifier that has a Bootstrap

320

05:08:18

This isn’t supposed to be practical or anything like that so if it has some weird design quirks that don’t make sense then just know it isn’t supposed to work in real life.

published 8 years ago

Issacsutt

8 years ago

Why are split power supply's used?

jason9

8 years ago

Because the speaker has to get current pushed into it and pulled out of it repeatedly and it won’t do so well if it’s constantly getting current pushed into it, and in order to make current be constantly pushed into it and pulled back out again it needs positive and negative voltages and there need to be two separate power supplies to provide the positive and negative voltages.

hurz

8 years ago

But jason, the current source PNP at the output stage or VAS is ridiculous. Change its beta and see whats happend.

hurz

8 years ago

What I have changed in parameter only a little? http://everycircuit.com/circuit/4532510322327552

jason9

8 years ago

I know. See the description.

Issacsutt

7 years ago

Thanks for your explanation Jason, that helped! Sorry it took so long to reply, I've just been crazy busy lately

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.