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-   -   switching power supply :simple,high efficiency .Please help (http://www.diyaudio.com/forums/power-supplies/45969-switching-power-supply-simple-high-efficiency-please-help.html)

thanh 18th November 2004 01:18 AM

switching power supply :simple,high efficiency .Please help
 
Can any give me some schematic?thanks you:)

Sch3mat1c 18th November 2004 01:29 AM

I'm working on something slightly more complicated than:

http://webpages.charter.net/dawill/t...s/Inverter.gif

But I work very little on it. :p

Tim

thanh 19th November 2004 02:24 PM

oh!thank you .but i have no tube

Sch3mat1c 19th November 2004 04:48 PM

I was just using that for convienience, you can use a high speed diode instead.

The oscillator as shown doesn't always start, or keep running, FWIW.

Tim

sss 19th November 2004 10:19 PM

Re: switching power supply :simple,high efficiency .Please help
 
Quote:

Originally posted by thanh
Can any give me some schematic?thanks you:)
hi
if u looking for somthing dealing with audio try the next car amp power supply
http://sound.westhost.com/project89.htm

thanh 23rd November 2004 07:45 AM

Quote:

if u looking for somthing dealing with audio
yes! thank you! I think i can't buy sg ic:)

sss 25th November 2004 03:04 PM

try uc3825 - they are better , made by TI (www.ti.com)

djQUAN 25th November 2004 03:22 PM

what type of SMPS are you thinking of?
for car amp? car preamp? offline?

if you need the first two, I got one in here... http://djquan.angelcities.com/smps.html

uses cheap and readily available TL494.

thanh 26th November 2004 02:40 AM

thank djQuan, sss and sch3mat1c
I need a switching pw sppl +-35v 8A and more

sss 27th November 2004 05:23 PM

the most difficult part is the transformer , choosing the core ,turns .......


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