arossdotme | dont supose anyone knows anything about the dps-700GB A server power supply. the info i had for pin out seams to.. well not work. my current plan is to get a diff one and sell on this one unless someone happens to know the magic needed :) | 00:08 |
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arossdotme | i yet 2.*v and 3.*v out on 2 pins so i guess it sorta works. theres a dent in it on the bottem | 00:09 |
arossdotme | unless it was sold faulty to me :( idk | 00:09 |
arossdotme | for 12v mainly 500w+ power supplys 2rd hand server power supplys are really cheap! £10-20 compared to nice, know to work, low noise meanwell brand psus | 00:11 |
arossdotme | which cost £100+ new and hard to get 2rd hand | 00:11 |
DocScrutinizer05 | 24V is a real 30V like 12V is a real 15V | 11:16 |
DocScrutinizer05 | >>Typical (daily) charging: 2.282.4 V (depending on temperature and manufacturer's recommendation)<< https://en.wikipedia.org/wiki/Leadacid_battery#Voltages_for_common_usages | 11:29 |
DocScrutinizer05 | that's 2.4V * 6 | 11:29 |
DocScrutinizer05 | = 14.4 | 11:29 |
eintopf | cool | 11:30 |
eintopf | I thought 12 V battery would be 12 V | 11:30 |
DocScrutinizer05 | widespread misconception | 11:31 |
eintopf | and such tolerance also applied to notebook batteries? | 11:32 |
DocScrutinizer05 | notbook battery are LiIon cells which have a usual top voltage of 4V1 or 4V2 and a discharge end voltage of 3V5 or even 3V0 | 11:33 |
DocScrutinizer05 | do your math | 11:34 |
DocScrutinizer05 | they are even *labeled* sometimes 3V7 and sometimes 4V1 or 4V2 | 11:34 |
DocScrutinizer05 | 3V7 is more honest thaan 4x | 11:35 |
DocScrutinizer05 | https://en.wikipedia.org/wiki/LiIon | 11:36 |
DocScrutinizer05 | NiMgCo? (the most usual chemistry) has a nominal 3.7V and max 4.2V, for the (new) LiFeP the voltage from cell chemistry is different | 11:46 |
DocScrutinizer05 | arossdotme: huh? BMS? dps-700? no idea what you're talking about | 11:50 |
arossdotme | sorry BMS =battery protection circuit | 11:50 |
arossdotme | dps-700 was a model of computer server PSU | 11:51 |
DocScrutinizer05 | and what was your question abozut that dps-700? | 11:55 |
DocScrutinizer05 | http://ramrev.blogspot.de/2015/07/low-bucks-grain-mill-part-3-dc-power.html | 12:05 |
arossdotme | DocScrutinizer05, thx for the link, prev tried that wiring. no success... wonder it was DOA or if i fried it trying :/ | 14:07 |
arossdotme | hmm i guess ill try again but with a load resistor connected to 12v pwr out | 14:07 |
DocScrutinizer05 | add a load incandecent lamp from your car ;-) | 14:09 |
DocScrutinizer05 | like that 50W front lamp | 14:10 |
DocScrutinizer05 | it makes for a at least semi-decent load | 14:10 |
arossdotme | heh | 14:10 |
arossdotme | oh btw got a nice 100w led https://www.aliexpress.com/item/2016-NEW-10pcs-Cree-Xlamp-XP-G3-Series-XPG3-S4-LED-Chips-LEDs-Diode-Cool-White/32702230953.html | 14:11 |
DocScrutinizer05 | wut 100W?? | 14:11 |
arossdotme | i think its one of the most efficient currently around | 14:11 |
DocScrutinizer05 | wow, mad | 14:11 |
arossdotme | really bright | 14:11 |
arossdotme | sun glasses are a must XD | 14:12 |
arossdotme | if you put plastic in front of it it 1-3cm then it melts or paper burns | 14:12 |
DocScrutinizer05 | 100W cooper PCB (SIC!) | 14:12 |
DocScrutinizer05 | hehe | 14:12 |
arossdotme | got a old cpu copper heatsink + fan | 14:13 |
arossdotme | the domes of the leds get too hot to touch | 14:13 |
arossdotme | the copper heatsink plate gets warm... just dont put fingers near the leds | 14:19 |
arossdotme | btw with the DPS-700GB i assume the 12v "pins" are connected together and not separate rails? | 15:04 |
arossdotme | assume/hope | 15:04 |
arossdotme | found out why i dont work, the bloody transformer is in peaces! was wondering why there was rattling inside! | 15:18 |
--- Fri Oct 28 2016 | 00:00 |
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