250W Class B Amplifier

279

04:51:40

Some specs:

Vin - 6Vm 
Av - 7.45
Pout - 250W
Pcc - 342W
η - 73%
Δf - <10Hz - 70kHz @ - 3dB
PSRR - In the uV range, immeasurable, around -90 dB
THD - 0.007%

published 8 years ago

Eeric82

8 years ago

I noticed that one of the transistors is shorted. Is it meant to be like that and if so, why?

thebugger

8 years ago

That's a current mirror. Whatever current flows through the transistor on the right is reflected to the transistor on the left. This balances the differential amplifier.

EMDoyleiii

8 years ago

Nice design.

thebugger

8 years ago

That's what EC can squeeze in. The final version is more advanced.

hurz

8 years ago

Why do you always project yourself as the professor of all electronic thinking?

thebugger

8 years ago

Why must you spam on every post. What does my circuit concern you. Just buzz along to a newbie's circuit or something.

hurz

8 years ago

"That's what EC can squeeze in." ...

thebugger

8 years ago

Don't have the workspace to fit the entire circuit.

eekee

8 years ago

I have no idea why you'd want to balance a differential amplifier like that, but the overall behaviour of the amp is very good.

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