00:08 <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 :)

00:09 <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

00:11 <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

11:16 <DocScrutinizer05> 24V is a real 30V like 12V is a real 15V

11:29 <DocScrutinizer05> >>Typical (daily) charging: 2.28–2.4 V (depending on temperature and manufacturer's recommendation)<< https://en.wikipedia.org/wiki/Lead–acid_battery#Voltages_for_common_usages

11:29 <DocScrutinizer05> that's 2.4V * 6

11:29 <DocScrutinizer05> = 14.4

11:30 <eintopf> cool

11:30 <eintopf> I thought 12 V battery would be 12 V

11:31 <DocScrutinizer05> widespread misconception

11:32 <eintopf> and such tolerance also applied to notebook batteries?

11:33 <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

11:34 <DocScrutinizer05> do your math

11:34 <DocScrutinizer05> they are even *labeled* sometimes 3V7 and sometimes 4V1 or 4V2

11:35 <DocScrutinizer05> 3V7 is more honest thaan 4x

11:36 <DocScrutinizer05> https://en.wikipedia.org/wiki/LiIon

11:46 <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

11:50 <DocScrutinizer05> arossdotme: huh? BMS? dps-700? no idea what you're talking about

11:50 <arossdotme> sorry BMS =battery protection circuit

11:51 <arossdotme> dps-700 was a model of computer server PSU

11:55 <DocScrutinizer05> and what was your question abozut that dps-700?

12:05 <DocScrutinizer05> http://ramrev.blogspot.de/2015/07/low-bucks-grain-mill-part-3-dc-power.html

14:07 <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

14:09 <DocScrutinizer05> add a load incandecent lamp from your car ;-)

14:10 <DocScrutinizer05> like that 50W front lamp

14:10 <DocScrutinizer05> it makes for a at least semi-decent load

14:10 <arossdotme> heh

14:11 <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

14:12 <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

14:13 <arossdotme> got a old cpu copper heatsink + fan

14:13 <arossdotme> the domes of the leds get too hot to touch

14:19 <arossdotme> the copper heatsink plate gets warm... just dont put fingers near the leds

15:04 <arossdotme> btw with the DPS-700GB i assume the 12v "pins" are connected together and not separate rails?

15:04 <arossdotme> assume/hope

15:18 <arossdotme> found out why i dont work, the bloody transformer is in peaces! was wondering why there was rattling inside!