900W H-class PA Amp with Limiter

[totski]

Corrected files...

Regards,

sir will,good day do you have board of this in mirror image?

 

[totski]

thank's to your board design sir will and to mile's this is my b500 tef it's working loud and clear it is hi-fi PA, offset -0.33vdc .is it ok negative offset mr. mile?

 

[sownel]

Thanks mr.rohin can you send ax500 files? And i need sr 800 power details and speaker load details

 

[wiljj78]

thank's to your board design sir will and to mile's this is my b500 tef it's working loud and clear it is hi-fi PA, offset -0.33vdc .is it ok negative offset mr. mile?

0.33vdc is a bit high offset, make sure you short input to ground before measuring the offset, however still a great work...

 

[khalsa]

is this original protection circuit

 

[andrewlebon]

Khalsa you are correct

 

[aman khalsa]

is this original protection circuit

 

[rohin]

is this original protection circuit

sat sri akal bhaji , this protection is better that protection provide be apex? dc detect is poor is this circuit good dc detect protection?
tuhade kehan da matlab ki a vi circuit dujeya de hi lende ne.

 

[rohin]

Thanks mr.rohin can you send ax500 files? And i need sr 800 power details and speaker load details

check pm

 

[stewin]

merry CHRISTmass to you all and a happy prosperous new year

 

[totski]

thank's to your advice willy,i measure it with shorting input this time. merry x mas.

 

[sandeep kayarkar]

Hello everybody
Marry Christmas to all

Need help
My H900 not working
Class AB is perfect but when I attach hi rail 100 watt bulb
Glow bright

 

[sandeep kayarkar]

H900

H class not working perfectly

 

[rohin]

H class not working perfectly

if bulb is glow that mean high current flow in circuit.check high rail +- are right side check power supply connection are right.power supply connection may be issue. check mur diode.amp looking good.best of luck.

 

[sandeep kayarkar]

Power supply is ok. -+rail is ok
But bulb Glow bright and down repeated
Bulb is flashing

 

[rohin]

Power supply is ok. -+rail is ok
But bulb Glow bright and down repeated
Bulb is flashing

remove mv and put a jumper in place of 3pin diode and give direct hv in place of mv.then check and first confirm fault in amp section or stepper section.amp will work with hv if it ok.if amp work good with hv then fault in mosfet ,ic, or in ziner.

 

[sandeep kayarkar]

Ir 2117 change mur 1560 change mosfet change
Bf 421 change
But problem still the same
Sir mile pls help me

 

[rohin]

Ir 2117 change mur 1560 change mosfet change
Bf 421 change
But problem still the same
if everything ok then problem may be short or miss track.did you check amp with only hv ? if amp bulb go up and down there is no chance fault in stepper because if ic fail or any fault in stepper then two things will happen mosfet on or off in both position there is no chance that bulb will go up and down.you are doing something very wrong so no one can help you than yourself.

 

[suryadi5417]

Ir 2117 change mur 1560 change mosfet change
Bf 421 change
But problem still the same
Sir mile pls help me

maybe your stepper irf540 conect to heatsink or you release the fuse 1 by 1 to find the short,

 

[sandeep kayarkar]

It's my 8th channel of h900
I got it
Now the problem solved
But where is sir mile?