<div dir="ltr"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><span style="color:rgb(0,0,0);font-size:12.800000190734863px"> power the PCB from the bench supply that the board ... the power light flickers weirdly, and it sends the bench supply into a fit.</span></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">....<br><span style="color:rgb(0,0,0);font-size:12.800000190734863px">I gradually turned up the current, and lo and behold the switch started going through its startup diagnostics.</span> </blockquote><div><br></div><div>So that knob must be the current *limit* ?   <a href="https://electronics.stackexchange.com/a/328973/72400">https://electronics.stackexchange.com/a/328973/72400</a></div><div><br></div><div><br></div></div>