Class B Amplifier

207

02:28:57

I recently posted a class A amp. Here's my class B project. Some specs I couldn't measure, because it takes too much time for the simulation to stabilise at the given frequency, so just a shortened spec list is below. 


- Input Sensitivity - 5Vm - I always keep the power amp Av low. You can adjust to your requirements, but it will affect the distortion. 
- Power Draw - 60W
- Output Power - 43W
- Efficiency - 72.5%

published 7 years ago

lenzrulz

7 years ago

Love your class B, I had a few issues with my class B and your circuit addressed some of my concerns...👍

thebugger

7 years ago

Glad to be of help

thebugger

7 years ago

Keep in mind that this circuit might need some improvements for it to work in real life. For instance better temperature compenaation is required, because the output stage is composed of Sziklai Pairs. This means that for miniscule variations in bias, the circuit might start drawing large amounts of current. Basically the thermal runaway is a big issue here. One way to compensate is to compose a really good thermal compensation circuit, or to change the output stage with a simple Darlington pair. The second option saturates much harder, but you lose an extra 0.7V of output swing

hurz

7 years ago

@lenzrulz, dont look to the work of @thebugger as you are close to his understanding. You are lightyears away from what @thebugger knows about amplifier. You do not have a few issues, you have fundamental issues to understand electeonic. So do not try to pull @thebugger DOWN to your low level of knowledge. Thats riduculous! Check for example this epic fail http://everycircuit.com/circuit/5239564208963584

lenzrulz

7 years ago

Lol...😂

thebugger

7 years ago

Guys chill, just discussing stuff here :)

hurz

7 years ago

Technical discussion with Lenny? No chance

lenzrulz

7 years ago

A rational discussion with Warner? No chance!

hurz

7 years ago

cold sick mud

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