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PS01 ive got 48volts where i should have 24volts! what the..

PostPosted: Wed Jan 07, 2004 4:35 pm
by illuminoti
i just finished the PS01 rev. 1.0. well i guess im not done yet. at J5, i am getting 48volts where i should have 48volts BUT, i am also getting 48volts where i should have 24volts. ive studied the schematic and everything seems in order but i have limited experience troubleshooting this stuff. does anyone have an idea of where i should start, or any idea of maybe a bad component? its probably something simple that im missing. HELP! THANKS!!! :shock:

PostPosted: Wed Jan 07, 2004 4:51 pm
by tpryan
Check for shorts between the regulator tabs. They should be insulated from each other, and from the heatsink. If you don't mount the insulating shoulder washers correctly, or torque the screw too tightly, you may create a short between the 317T and 317HVT.

-Tim

tremendous!!! thanks tim!

PostPosted: Wed Jan 07, 2004 7:47 pm
by illuminoti
yep, that did it. i made sure that the two tabs were isolated from the heat sink and i am good to go. thank you for the prompt reply. (about 1/2 hour) thank you again!