ultra performance amp

[400kg]

update and test

update excelinear and 20 khz square wave test at full power.

 

[umut1001]

IMHO square wave may should be better

 

[AndrewT]

Why square way at maximum power?
Why don't you try at half max and/or at 1/10 of max?

 

[400kg]

Why square way at maximum power?
Why don't you try at half max and/or at 1/10 of max?

hi Mr. Andrew

There is no much difference.

 

[400kg]

simule

simule photo. next update

 

[400kg]

sapphire pcb on sale now

Vtech Sapphire Amp Bare PCB High Quality Class AB Audio Amp PCB | eBay

 

[400kg]

Final diagram EXCELINEAR

slewrate>180v/us
dc offset 4mv

 

[Vostro]

400kg I see you using Multisim,
Do you mind posting AC analysis 10Hz to 100Mhz
(Simulate > Analysis > AC Analysis... )

Thanks

 

[400kg]

ac analysis

Hi vostro

 

[evette]

THe link for pcb,s on ebay dosen,t work. evette
Maybe 400kg can correct it. Thanks

 

[400kg]

afec. injected

afec. injected

 

[400kg]

sapphire project is finish.

Feedback strengthened. I believe that the best CFA.
respects.

 

[400kg]

1khz-20khz-100khz square wave

 

[manso]

Looks good, I like this type of amp. Did you try hawksford type cascodes for the vas. A little performance gain can be obtained.

 

[400kg]

hi manso
Hawksford structure gave better results than 470uF capacitors.