Hi all
The above mentioned amp blew all the power fets and half of outputs. I fixed the amp and again customer returned blowing the power supply. On observation without output fets the amp comes on but with 3% duty cycle when the voltage is 12.5v. When I reduce the voltage to 10v then I am getting good 45% duty cycle and it pulls about 0.6amps current. Is this have to do with repeating power supply damage?thank you.
The above mentioned amp blew all the power fets and half of outputs. I fixed the amp and again customer returned blowing the power supply. On observation without output fets the amp comes on but with 3% duty cycle when the voltage is 12.5v. When I reduce the voltage to 10v then I am getting good 45% duty cycle and it pulls about 0.6amps current. Is this have to do with repeating power supply damage?thank you.
So is there a possibility that if he did not had enough current i.e. weak battery that might have cause power fets to burn?
This amp looks like a MMATS amp. The MMATS amps are a lot like Earthquake amps and the diagrams of the Earthquake amps show over and under-voltage protection.
The attached amp is a 4080 amp but the supply may be similar to what you have.
The attached amp is a 4080 amp but the supply may be similar to what you have.