Domestic Amplifier "FURIOUS"

[Hennady Kovalsky]

Good afternoon
I want to present my development of an domestic amplifier FURIOUS
The concept of the vintage amplifier repeats QUAD-303

The amplifier has a voltage regulator with minal pulsations
The voltage amplifier is implemented on IRF510 mosfets
It is an amplifier with follow-up feedback

 

[stumpamp]

output caps?

Interesting design and very nice build!
But why do you use output caps? 😕 It looks like you have two transformers so you could build easily a symmetric supply?

 

[gannaji]

For the power level targeted, a retro design with single polarity power supply and output caps is more suitable, IMO.

 

[Hennady Kovalsky]

Interesting design and very nice build!

Thanks

...But why do you use output caps? 😕 It looks like you have two transformers so you could build easily a symmetric supply?

I use an output caps for two reasons:
1) Insufficient stability of output voltage on high level signals
2) For a bipolar stabilized power supply circuit will become difficult

The use of the stabilizer is necessary for the resistive load R14 R16.
Such a load makes the amplified signal linear without the use of negative feedback

 

[Hennady Kovalsky]

In the simulator checked the pulsations of stabilizers FURIOUS and QUAD-303 at a load of 1A:

 

[Hennady Kovalsky]

... a retro design with single polarity power supply and output caps is more suitable, IMO.

exactly
The FURIUS amplifier works in 2.1 audiosystem, that is, a subwoofer with its amplifier + 2 stereo speakers.