View Single Post
Old 02-25-2012, 05:19 PM   #4
Join Date: Sep 2010
Posts: 640
Default Re: Circuit voltage measurement problem.

Take your measurements relative to the - pin on the rectifier (i.e. put black probe of DMM on it.) The + pin should give approximately 1.4 times your line voltage (~340V for 240V mains, ~170V for 120V mains.)

You can also remove the rectifier and check its 4 diodes separately out-of-circuit.
b700029 is offline   Reply With Quote