Sipher 0 Report post Posted July 13, 2003 saw some wall-warts today at sls. they either stated "regulated switching power supply" or "regulated power supply". but their price is abit cheap? they costs around $20-$50. i want to ask how do i really know if the power supply is really regulated? i notice some diagrams/pictures often on wall-warts. do they mean anything? also, is there a "brand" of wall-wart that is good and it's available in singapore? thanks Share this post Link to post Share on other sites
N@Z 0 Report post Posted July 13, 2003 I'm curious too, is 'switching' not the same as 'linear'? I saw one here as well but it didn't mentioned 'linear' Share this post Link to post Share on other sites
Sipher 0 Report post Posted July 13, 2003 N@Z, switching is not the same as linear (i think). go to tangent's website and read about it. sorry i forgot what's his website Share this post Link to post Share on other sites
fishball79 0 Report post Posted July 13, 2003 Switching power supplies are cheap as they use very much smaller transformer and hence filter caps, etc. They achieve the high currents required via means of high frequency oscillation. Most of these are class D or H power supplies i believe. Almost all hifi electronics uses linear power supplies save for Linn and Chord. Share this post Link to post Share on other sites
jtfoo 0 Report post Posted July 14, 2003 sorry i forgot what's his website http://tangentsoft.net/audio/opamp-ps.html Try not to use switching power supply for reasons explained at Tanget's site... Go for linear regulated supply. As for wallwart, I don't know how many percent regulation they have? Got to measured them. Share this post Link to post Share on other sites
erickoh 0 Report post Posted July 14, 2003 A recent thread from head-fi on DIY regulated PS for META42 http://www4.head-fi.org/forums/showthread....&threadid=39666 Any takers? jasonhanjk? Share this post Link to post Share on other sites
N@Z 0 Report post Posted July 14, 2003 Potential money spinner there me-thinks! Share this post Link to post Share on other sites
Sipher 0 Report post Posted July 14, 2003 yes will anyone make me a good linear regulated power supply for a reasonable cost? Share this post Link to post Share on other sites
Sipher 0 Report post Posted July 14, 2003 Switching power supplies are cheap as they use very much smaller transformer and hence filter caps, etc. They achieve the high currents required via means of high frequency oscillation. Most of these are class D or H power supplies i believe. Almost all hifi electronics uses linear power supplies save for Linn and Chord. fishball, u mean as long as the power supply is taken from hifi products, it is a linear regulated power supply?? will those that comes with laptops do? are they linear regulated? Share this post Link to post Share on other sites
matbon0013 0 Report post Posted July 14, 2003 I believe Jason can make one Share this post Link to post Share on other sites
mychew 0 Report post Posted July 14, 2003 Yeah...believe jason He can even build a DC-DC converter and AC-DC power converter Share this post Link to post Share on other sites
adhoc 0 Report post Posted July 14, 2003 i would imagine that laptop computer psus come as switching. i know for a fact that most if not all full sized desktop psus are switching. something i learnt back from my old computer building days. Share this post Link to post Share on other sites
Sipher 0 Report post Posted July 14, 2003 anymore inputs from the experts? where's jason?? he's gone ever since he got the CD7300 Share this post Link to post Share on other sites
adhoc 0 Report post Posted July 14, 2003 oh yeah huh... Share this post Link to post Share on other sites
jtfoo 0 Report post Posted July 14, 2003 How much are you willing to spend on a regulated supply? Regulated supplies can varies in quality. You want cheap one and does the job, then can diy one for less $50... Expensive one can shoot all the way more than $200, with toroid trannies, ultra fast hexfet diodes, exp caps, dual mono config..etc.. But still no matter how much you spend on a good power supply, the regulation won't be as low and linear as flat as a battery supply. Share this post Link to post Share on other sites
