So I have this amp. It powers up and has output. However when I switch phase or subsonic filter it kills output and drive, but after recycling power the output is restored.
Also,checking the +/- HV from Power Ground I read -57 -HV and +28 +HV with signal applied. Without signal -30 +HV and -50 -HV.
What am I not getting? Is this normal?
I found a older thread where Perry Babin posted the schematics dated 6/19/2000. The Manufacture date for this amp is 8/11/2003. The schematics show twelve MTP75N05HID for the power supply mosfets. The amp has sixteen IRF3205 mosfets. Do I have the right schematic for this amp? If not does anyone have the version I need? I realize I can go to RF for older schematics, but if someone has it handle I would much appreciate it.
Bill
Also,checking the +/- HV from Power Ground I read -57 -HV and +28 +HV with signal applied. Without signal -30 +HV and -50 -HV.
What am I not getting? Is this normal?
I found a older thread where Perry Babin posted the schematics dated 6/19/2000. The Manufacture date for this amp is 8/11/2003. The schematics show twelve MTP75N05HID for the power supply mosfets. The amp has sixteen IRF3205 mosfets. Do I have the right schematic for this amp? If not does anyone have the version I need? I realize I can go to RF for older schematics, but if someone has it handle I would much appreciate it.
Bill
Attachments
Virtually all of these old BD amps use the same circuit. The scale is the only difference.
What's the file name on the diagram?
You have to measure the rail across the red and black wires since the rails shift up or down as needed.
What's the file name on the diagram?
You have to measure the rail across the red and black wires since the rails shift up or down as needed.
Perry, The diagram File Name is blank. I attached the PDF.
Okay, the rails are 105 Vdc between red and black with a 14.4 Vdc input.
Okay, the rails are 105 Vdc between red and black with a 14.4 Vdc input.
That's the best I have. The only difference, that I know of, is the elimination of the MC14526. The attached uses the newer version.