Sorry for reviving old thread, but does it have hard shut down on undervoltage condition or simply the output power limit is reduced ? I need something that will work down to about 27V. However I do not need that much power, maybe 30W-50W max.
Awesome DC/DC converter 36-72v in 12v 20a out $20
- Thread starter magudaman
- Start date
magudaman
10 kW
I personally have ran mine down to about 30v with no brownout on output side but never really below that. According to the spec sheets it says it browns out or output voltage will drop.
Frxdy
10 mW
Hi dee hey!
He no longer puts these on eBay as he found a steady buyer at $25. He agreed to sell me one, shipping was just under $5. I Paypal'd him & got it in just a few days. I asked if I might tell you guys and gals about him & he said OK. If you want one (or more) email him at paul@jglcomp(dot)com. I typed "dot" so robots don't bomb him with emails. You type a period. Tell him you'd like a DC to DC converter & ask for a V48-12 Micro Verter. He'll fix you up!
I added some cooling fins to the back. Epoxy putty on the edges and thermal transfer cream in the middle. You might not need 'em, but they can't hurt.
Oh.... and thanks for the wiring diagrams! I asked Paul, he didn't know....he just sells 'em!
He no longer puts these on eBay as he found a steady buyer at $25. He agreed to sell me one, shipping was just under $5. I Paypal'd him & got it in just a few days. I asked if I might tell you guys and gals about him & he said OK. If you want one (or more) email him at paul@jglcomp(dot)com. I typed "dot" so robots don't bomb him with emails. You type a period. Tell him you'd like a DC to DC converter & ask for a V48-12 Micro Verter. He'll fix you up!
I added some cooling fins to the back. Epoxy putty on the edges and thermal transfer cream in the middle. You might not need 'em, but they can't hurt.
Oh.... and thanks for the wiring diagrams! I asked Paul, he didn't know....he just sells 'em!
Frxdy
10 mW
Welllll.... it's not working on 69 volts. I checked the voltage before I tried. The batteries had just been charged & it was 69. I tried it at 36 volts, it worked. After one more no go at 69V I accidently hooked it backwards to 36. **POOF!** All the white smoke escaped & it's dead. The manufacturer can't explain why it didn't work at 69 and reminded me it's death is my fault. They suggested I return it for repair, but won't explain why it didn't work at 69V. I've asked if my wiring was correct and if it should work at 69V. It's been long enough for them to answer, yet have not.
Frxdy
10 mW
I bought one.... it didn't work at 69 volts. I tested it at 36 and it worked. I tried again at 69, a dim power out for an instant, folowed by no power. I tried it again at 36V, accidently reversed the leads for an instant...it's dead. Bums me out, if it had worked at 69 I wouldn't have been testing at lower voltages.
