pete16
Junior Member level 1
Hello
I have an MXR 117 phaser pedal that I was repairing. It plugs directly into mains and has a transformer (120V Primary - 24V center tapped secondary) on the board which is followed by a rectifier and regulator to bring it down to 15VDC.
I had it hooked up directly to my power supply to fix it and after replacing a couple of bad op amps and shorted caps it now works.
I decided to test the transformer before putting it back together. The DC resistance of the secondary is about 120ohms between each leg and the center tap.
However the DC resistance of the primary is 1K. This sounds way to high to me.
The transformer is working though. Has anyone ever heard of a 120AC - 24VDC transformer where the primary DC resistance is so high?
I have an MXR 117 phaser pedal that I was repairing. It plugs directly into mains and has a transformer (120V Primary - 24V center tapped secondary) on the board which is followed by a rectifier and regulator to bring it down to 15VDC.
I had it hooked up directly to my power supply to fix it and after replacing a couple of bad op amps and shorted caps it now works.
I decided to test the transformer before putting it back together. The DC resistance of the secondary is about 120ohms between each leg and the center tap.
However the DC resistance of the primary is 1K. This sounds way to high to me.
The transformer is working though. Has anyone ever heard of a 120AC - 24VDC transformer where the primary DC resistance is so high?