UCD 25 watts to 1200 watts using 2 mosfets

hi all hoping to finish this project the amazing amp this week . my pictures :D :D
 

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i use 1uf and 40 turn 0.8mm wire aruond the ETD29 core
in exit i have -1.5 VDC and the core have noise like hisssssssssss
input voltage befor power board is + - 25 VAC and after power it is + - 35 VDC
the power board is work good without amp board
the relay have 2 or 3 second delay
when i conect the power board to amp board the relay dont conect and dont work
some thing like protection mode
the band is plomping in first time and the relay was turn off and disconect the band frome amp
OCP LED was turn off
one of two mosfet was warm and the other one is littel warm
what is the problem ?
 
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i use 1uf and 40 turn 0.8mm wire aruond the ETD29 core
in exit i have -1.5 VDC and the core have noise like hisssssssssss
input voltage befor power board is + - 25 VAC and after power it is + - 35 VDC
the power board is work good without amp board
the relay have 2 or 3 second delay
when i conect the power board to amp board the relay dont conect and dont work
some thing like protection mode
the band is plomping in first time and the relay was turn off and disconect the band frome amp
OCP LED was turn off
one of two mosfet was warm and the other one is littel warm
what is the problem ?

Hi Hadi,

something wrong in your amp pcb pls check once again carefully.you said -1.5v comming spk line that is why the relay(DC protect) not connect to the speaker.

regards
MANOJ
 
Hi sir manoj
DC offset is -0.001 now
i use 1k 1% resistor
i dont have DSO or CRO
relay steal have problem
some time was conect and some time was disconect
i steal use + - 35 VDC for input amp
i have noise steal like hissssssss
the relay was disconect the band
i paraleld a LED with relay self for know when it is work
what can i do now ?
 
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