Thanks for the offer, but I want to get this done asap.
TBCS 5TB Club :: coilgun :: bench PSU :: mightyMite :: Zeus :: E15 Magna EVThat we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours, and this we should do freely and generously.
--Benjamin Franklin
...yeah, so much for ASAP. I finally got around to ordering some of the necessary resistors off Mouser on Saturday, shipped Tuesday, and I got them today.
I went ahead and picked up 10 because, hey, you never know, right?
and a single one:
I spent ~10 cents extra each (buying 10, these were $2 each) to get the kinda ones with heatsinks with mounts. That way I can just screw these onto the PSU housing or an old CPU heatsink or something, and keep it nice and cool. I'll do some testing to see how hot it gets. I'd rather just mount it to the PSU case, but I do have some old Pentium-era CPU HS/F's (you know, back when having a fan on your CPU meant you were serious business ) that I can throw it on if need be.
TBCS 5TB Club :: coilgun :: bench PSU :: mightyMite :: Zeus :: E15 Magna EVThat we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours, and this we should do freely and generously.
--Benjamin Franklin
You know you have problems when you can look at those resisters and say "Oh! Cool! I want some!"
I have no use for a 10W resister. Haha.
Current Projects
-1979 Jeep DJ5 "Mail Jeep"
-1981 Chevrolet K10
Well, I have no clue what I was doing wrong before..I must have been hooking something up wrong, because it wasn't working... Anyways, today I thought to pull apart my PSU tester to see how it was wired, and...basically exactly what the internet had told me.. 5A 15Ohm resistors on both the 5V and 3.3V lines. Apparently the 3.3V line load requirement is fairly new, but none of my PSUs worked with just the 5V line load.
So, the end result of that is that I finally have it working correctly! I ran it for a bit with some 12V 3A motors that I have acting as a constant load, and the 3.3V resistor seems to be just fine, but the 5V resistor got quite hot after just a short time. Looks like its time to dig through my box of old heatsinks! I knew I was holding onto those things for a reason.
TBCS 5TB Club :: coilgun :: bench PSU :: mightyMite :: Zeus :: E15 Magna EVThat we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours, and this we should do freely and generously.
--Benjamin Franklin
hey if you want some smaller heat sinks let me know i have a few laying around id let you have.