holly amp case batman - Page 3

karma · 17th May 2003, 10:28 PM

if anyone has a setup for charging batterys in a amp set me up

thanks.....

karma · 17th May 2003, 11:34 PM

hmm gota wire em up the other way to much juice here 120v
total each cell is 12V

!!warning!! dont try this at home if you never worked with cells
shorting the cell would be a bad thing.cells can explode

theres a total of 10 cell at 6 only it comes up 77.7v ouch to much
big time. wire the other way would be 12v

JOE DIRT® · 17th May 2003, 11:48 PM

hahaha...Karma...great battery pack....if ya need help charging let me know....i think you know enough how to do it...I`m just up the road if you need help

Cheers!!The DIRT®

karma · 17th May 2003, 11:53 PM

i tryed it with 2 cells per channnel it does work just tryed it
wow gota make a pcb for a slow charge that way i dont have to time it

JOE DIRT® · 18th May 2003, 12:07 AM

you can trickle charge them easy off a small transformer and diode isolate each cell......and ofcourse current limit so they equally get the same charge

karma · 18th May 2003, 12:13 AM

sounds good. i gota source out some parts im tapped out. to be continued

karma · 18th May 2003, 01:03 AM

hmm

http://www.soundlabsgroup.com.au/dac...ery_power.html

karma · 18th May 2003, 05:02 AM

batterys finished even has a breaker bonus.i found the original
charger from the ups im going to use a dremal tool to cut the pcb.
tested it charges. still gota switch it over to batterys to charger but it works. sunday ill finish it. and time it
to see what the battery life is

karma · 18th May 2003, 05:04 AM

1

SHiFTY · 18th May 2003, 01:41 PM

For $10 I just picked up a switched mode supply for a mainframe (?) rated at 5V 250A ! It is huge, the Vout is a couple of bars an inch wide and several mm thick with a bolt attachment! Could make a nice welder...

Inside it has some pretty massive heatsinks, hefty diode bridge & regulators, and 4x 560uF 450V and 3x 15000uF 7.5V caps. Which incidentally should be nice for my tube amp project, where I need high voltage caps and also low voltage for the heaters. Score!

The case is pretty strongly built too, it would have cost a packet back in 1995 when it was new. The 150mm cooling fan will probably end up in my computer, running at low RPM for silent operation.

Yay for industrial power supplies!

18th May 2003, 01:03 AM	#27
karma diyAudio Member Join Date: Feb 2003 Location: hamilton,ontario	hmm hmm http://www.soundlabsgroup.com.au/dac...ery_power.html

18th May 2003, 01:41 PM	#30
SHiFTY diyAudio Member Join Date: Jul 2002 Location: New Zealand	Old computer stuff... For $10 I just picked up a switched mode supply for a mainframe (?) rated at 5V 250A ! It is huge, the Vout is a couple of bars an inch wide and several mm thick with a bolt attachment! Could make a nice welder... Inside it has some pretty massive heatsinks, hefty diode bridge & regulators, and 4x 560uF 450V and 3x 15000uF 7.5V caps. Which incidentally should be nice for my tube amp project, where I need high voltage caps and also low voltage for the heaters. Score! The case is pretty strongly built too, it would have cost a packet back in 1995 when it was new. The 150mm cooling fan will probably end up in my computer, running at low RPM for silent operation. Yay for industrial power supplies!

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17th May 2003, 11:48 PM	#23
JOE DIRT® diyAudio Member Join Date: Apr 2003 Location: Brantford, ON	hahaha...Karma...great battery pack....if ya need help charging let me know....i think you know enough how to do it...I`m just up the road if you need help Cheers!!The DIRT®

17th May 2003, 11:53 PM	#24
karma diyAudio Member Join Date: Feb 2003 Location: hamilton,ontario	i tryed it with 2 cells per channnel it does work just tryed it wow gota make a pcb for a slow charge that way i dont have to time it

18th May 2003, 12:07 AM	#25
JOE DIRT® diyAudio Member Join Date: Apr 2003 Location: Brantford, ON	you can trickle charge them easy off a small transformer and diode isolate each cell......and ofcourse current limit so they equally get the same charge

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