Atom Feed - Twisted Pear Audio Support - Topic:9V vs 7V or lower - 20Twisted Pear Audio Support - Atom Feedurn:twistedpearaudio-com:AtomFeed:TwistedPearAudioSupport:Topic:9Vvs7Vorlower-20:1Copyright 2024 Twisted Pear Audio Support2024-03-28T14:25:02Zhttp://www.twistedpearaudio.com/forum/Images/YAFLogo.pngForum Adminhttp://www.twistedpearaudio.comfeedback@twistedpearaudio.comluca72chttp://www.twistedpearaudio.com/forum/profile/26205-luca72cluca72chttp://www.twistedpearaudio.com/forum/profile/26205-luca72cRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-Whiteluca72chttp://www.twistedpearaudio.com/forum/profile/26205-luca72cRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-Whiteluca72chttp://www.twistedpearaudio.com/forum/profile/26205-luca72cYetAnotherForum.NETurn:twistedpearaudio-com:ftPosts:st1:meid22119:19V vs 7V or lower<table class="content postContainer_Alt" width="100%"><tr><td>You're right, i forgot Placid HD is a shunt power supply.<br />Thank you again and Happy New Year!</td></tr></table>2015-01-06T09:51:37-07:002015-01-06T09:51:37-07:00luca72c<table class="content postContainer_Alt" width="100%"><tr><td>You're right, i forgot Placid HD is a shunt power supply.<br />Thank you again and Happy New Year!</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid22118:19V vs 7V or lower<table class="content postContainer" width="100%"><tr><td>Yes - you will get slightly better regulation with 9V instead of 7V just because the CCS will have a bit more headroom. This difference is not at all huge - but still there is no advantage to the smaller voltage. :)</td></tr></table>2015-01-06T02:33:46-07:002015-01-06T02:33:46-07:00Russ White<table class="content postContainer" width="100%"><tr><td>Yes - you will get slightly better regulation with 9V instead of 7V just because the CCS will have a bit more headroom. This difference is not at all huge - but still there is no advantage to the smaller voltage. :)</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid22117:19V vs 7V or lower<table class="content postContainer_Alt" width="100%"><tr><td>Thank you for your answer.<br />You mean using 9V instead of 7V would make regulator output more stable? Or less subject to ripple/noise?<br />I can stand the less efficiency if performance would be better..</td></tr></table>2015-01-06T01:22:04-07:002015-01-06T01:22:04-07:00luca72c<table class="content postContainer_Alt" width="100%"><tr><td>Thank you for your answer.<br />You mean using 9V instead of 7V would make regulator output more stable? Or less subject to ripple/noise?<br />I can stand the less efficiency if performance would be better..</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid22116:19V vs 7V or lower<table class="content postContainer" width="100%"><tr><td>Technically all of those should work OK, the little bit extra headroom for regulator does help a bit in terms of performance at the cost of a somewhat less efficiency. :) Still anything from 6-9V or so would be fine.</td></tr></table>2015-01-06T00:44:40-07:002015-01-06T00:44:40-07:00Russ White<table class="content postContainer" width="100%"><tr><td>Technically all of those should work OK, the little bit extra headroom for regulator does help a bit in terms of performance at the cost of a somewhat less efficiency. :) Still anything from 6-9V or so would be fine.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid22113:19V vs 7V or lower<table class="content postContainer_Alt" width="100%"><tr><td>Hello,<br />i am arguing why 9V power transformers are suggested to feed Placid HD power supply for Buffalo III boards.<br />Wouldn't it be better to use a lower voltage transformer, like a 7V one? Placid HD regulator would get 7V x 1,4 = 9,8V rectified current, that should be enough for outputting 5,25V... am i wrong? A 6V transformer should be enough too...<br />By increasing transformer voltage we have more power to dissipate, causing the heat to increase too.<br />There is a specific reason to use 9V transformers instead of 7V or lower?</td></tr></table>2015-01-05T17:41:47-07:002015-01-05T17:41:47-07:00luca72c<table class="content postContainer_Alt" width="100%"><tr><td>Hello,<br />i am arguing why 9V power transformers are suggested to feed Placid HD power supply for Buffalo III boards.<br />Wouldn't it be better to use a lower voltage transformer, like a 7V one? Placid HD regulator would get 7V x 1,4 = 9,8V rectified current, that should be enough for outputting 5,25V... am i wrong? A 6V transformer should be enough too...<br />By increasing transformer voltage we have more power to dissipate, causing the heat to increase too.<br />There is a specific reason to use 9V transformers instead of 7V or lower?</td></tr></table>