fluxivity

API 325 help
« on: January 10, 2009, 11:02:41 PM »
Can anyone think of a reason why I'm blowing the main (400u) cap in an API 325. Keeps heating up/snapping. I've lowered my plus/minus rails to 12 V. All I get is crackle, no output. wired up as expected from schematic here
http://www.waltzingbear.com/Schematics/API/API_325.JPG

I'm just using pins 9/10 for output.
I feel like an idiot, am I missing something? I just rebuilt the entire board, my parts are right, right orientation. Caps are alittle bigger than spec (470u for a 400u, 16V instead of 6; 20u for 12.5) 4007's for diodes. IF my 2520 wasn't working I'd get no output right? Is is a grounding thing that i'm just missing?
Any thoughts?
Thanks
paul


Re: API 325 help
« Reply #1 on: January 11, 2009, 02:34:31 AM »
I'm just using pins 9/10 for output.
I feel like an idiot, am I missing something?

9 & 10 ? They're both positive going waveforms. Try 9&3, or 10&11 and report back.
http://www.lazpro.com
I reserve the right to not sell to idiots

Re: API 325 help
« Reply #2 on: January 11, 2009, 02:44:23 AM »
Also tie 3 & 4 together.
http://www.lazpro.com
I reserve the right to not sell to idiots

fluxivity

Re: API 325 help
« Reply #3 on: January 11, 2009, 07:43:58 PM »
Peter Purpose - total genius. I had hooked up 10 and 11 as I should have, not 9 and 10 as discribed, but grounding pin 4, dang.
Thanks and thanks
Paul


 

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