<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 31 Oct 2019, at 1:17 PM, Quincas Moreira <<a href="mailto:quincas@gmail.com" class="">quincas@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">I don’t exactly know, but I think its switchmode DCDC converter from the 12v dc walwart to 15v bipolar, then gets filtered and regulated linearly down to 12v bipolar and filtered again.</span></div></blockquote><br class=""></div><div>OMG, that sounds complicated! And that is a better? cheaper? lighter? alternative to an old fashioned linear PSU??</div><div><br class=""></div><div>A</div></body></html>