Found a spool of heater element, actually had it forever.. it just dawned on me what it is.
Current sharing seems a bit closer than I thought at ~109A.
17.2mv drop on supply one 8 awg wire.
20.1mv supply 2
18.9mv supply 3
Current sharing seems a bit closer than I thought at ~109A.
17.2mv drop on supply one 8 awg wire.
20.1mv supply 2
18.9mv supply 3
Attachments
Last edited:
Hit 170A (briefly of course) on a power sweeps at 1.3R on this guy. Supply running like a champ.
Hi, I have a problem with OVP, im done every change like on your photo, the PSU turn on with >14V, working about 30s and kicks off. Have you any advice to fix it?
In photo 3, did you add 22k to existing resistor? Need to add 22k on top of existing resistor. Probably should have made that clearer.
Hmm.. rev 2f units, same as mine?
Not sure, the one I blew up f'ing around. But the other three I modded all performed the same.
Not sure, the one I blew up f'ing around. But the other three I modded all performed the same.
I have the same unit, but the difference,
I used 24,9k instead of 24k, and like at the photo i add the 22k. I didn't changed the rezistors next to pot like you at first photos.
I used 24,9k instead of 24k, and like at the photo i add the 22k. I didn't changed the rezistors next to pot like you at first photos.
Ok, my post 12 had the final tweaks I did to get there. Don't worry about the photos prior to that.
If you have done that, then your rev may have a slightly different circuit in one or more places.
Did you ever produce a diagram for the control circuit? A diagram with the voltages would help troubleshoot for those trying this mod.
It wasn't a OVP problem, it was a overheating problem. This part heats up to 50.5 celcius on the top and the PSU shuts down.
I added an external fan and the PSU works. But why? What is this part? why it's heating a lot?
I added an external fan and the PSU works. But why? What is this part? why it's heating a lot?
Sorry, it's not this part. Its one of parts on daghter board. I hacked another, the same PSU, and everything is ok, 14,5V. You had similar problem, have You any idea to fix it?
Sory, you right, clearly.
When your ucc37323 overheated, did the power supply turn off from overheating or work normally?
When your ucc37323 overheated, did the power supply turn off from overheating or work normally?
Hi, is still this topic alive? I tried to modify this PSU HSTNS-PD19 Rev 04F and its dead... no voltage goes out.
Is there somebody who has schematic or can guide me which component to change on driving board?
used resistors 22K*2 and in shrink 12K
Is there somebody who has schematic or can guide me which component to change on driving board?
used resistors 22K*2 and in shrink 12K
