<div dir="auto">I am pritty sure PSU ripple will not be visible. <div dir="auto"><br></div><div dir="auto">It's going to be in KHz range.</div><div dir="auto">Probably burst not fixed rate </div><div dir="auto"><br></div><div dir="auto">Anyway </div><div dir="auto">You will still need a few Ohms resistor.</div><div dir="auto">And 500uF will soak that up.</div></div><br><div class="gmail_quote"><div dir="ltr">On Fri, 10 Aug 2018 12:57 Andy Davies, <<a href="mailto:andy@andydavies.info">andy@andydavies.info</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div dir="ltr">
<div style="FONT-SIZE:12pt;FONT-FAMILY:'Calibri';COLOR:#000000">
<div>CPC have a bigger range of Tenma units at better prices</div>
<div> </div>
<div><a href="http://cpc.farnell.com/w/c/test-equipment/bench-power-supplies-sources-loads/bench-top-power-supplies/prl/results?output-voltage-max=40v%7C50v%7C56v%7C60v%7C75v%7C80v&sort=P_PRICE" target="_blank" rel="noreferrer">http://cpc.farnell.com/w/c/test-equipment/bench-power-supplies-sources-loads/bench-top-power-supplies/prl/results?output-voltage-max=40v|50v|56v|60v|75v|80v&sort=P_PRICE</a></div>
<div style="FONT-SIZE:small;TEXT-DECORATION:none;FONT-FAMILY:"Calibri";FONT-WEIGHT:normal;COLOR:#000000;FONT-STYLE:normal;DISPLAY:inline">
<div style="FONT:10pt tahoma">
<div> </div>
<div style="BACKGROUND:#f5f5f5">
<div><b>From:</b> <a title="ceri.clatworthy@gmail.com" href="mailto:ceri.clatworthy@gmail.com" target="_blank" rel="noreferrer">Ceri Clatworthy</a> </div>
<div><b>Sent:</b> Friday, August 10, 2018 12:25 PM</div>
<div><b>To:</b> <a title="hackspace@swansea.hackspace.org.uk" href="mailto:hackspace@swansea.hackspace.org.uk" target="_blank" rel="noreferrer">Swansea Hackspace</a> </div>
<div><b>Subject:</b> Re: [Swansea Hackspace] bench power
supply</div></div></div>
<div> </div></div>
<div style="FONT-SIZE:small;TEXT-DECORATION:none;FONT-FAMILY:"Calibri";FONT-WEIGHT:normal;COLOR:#000000;FONT-STYLE:normal;DISPLAY:inline">
<div dir="ltr">
<div class="gmail_default" style="FONT-FAMILY:"comic sans ms",sans-serif">just
had a look at the PSU, (would not load on my phone ?!!?!?!)</div>
<div class="gmail_default" style="FONT-FAMILY:"comic sans ms",sans-serif"> </div>
<div class="gmail_default" style="FONT-FAMILY:"comic sans ms",sans-serif">Looks
suitable for you, BUT the current is ONLY adjustable with a screwdriver,
!!!!!</div>
<div class="gmail_default" style="FONT-FAMILY:"comic sans ms",sans-serif"> </div>
<div class="gmail_default" style="FONT-FAMILY:"comic sans ms",sans-serif">I would
recomend Farnell / RS / CPC etc not ebay ..</div>
<div class="gmail_default" style="FONT-FAMILY:"comic sans ms",sans-serif"> </div>
<div class="gmail_default">
<h3 class="m_7120984441078923537gmail-itemTitle" style="BOX-SIZING:border-box;MARGIN:0px;text-decoration-style:initial;text-decoration-color:initial"><font color="#37474f" face="Arial, Helvetica, sans-serif"><span style="FONT-SIZE:20px;FONT-WEIGHT:400"><a href="http://uk.farnell.com/w/c/test-measurement/bench-power-supplies-sources-loads/bench-top-power-supplies?no-of-outputs=1-output&output-voltage-max=60v&sort=P_PRICE" target="_blank" rel="noreferrer">http://uk.farnell.com/w/c/test-measurement/bench-power-supplies-sources-loads/bench-top-power-supplies?no-of-outputs=1-output&output-voltage-max=60v&sort=P_PRICE</a></span></font><br></h3>
<div><font color="#37474f" face="Arial, Helvetica, sans-serif"><span style="FONT-SIZE:20px;FONT-WEIGHT:400"><br></span></font></div>
<div><font color="#37474f" face="Arial, Helvetica, sans-serif"><span style="FONT-SIZE:20px;FONT-WEIGHT:400">
<h1 style="FONT-SIZE:1.81em;BORDER-TOP:0px;BORDER-RIGHT:0px;WIDTH:100%;VERTICAL-ALIGN:baseline;BACKGROUND:rgb(255,255,255);BORDER-BOTTOM:0px;ZOOM:1;FONT-WEIGHT:bold;COLOR:rgb(69,69,69);OUTLINE-WIDTH:0px;PADDING-BOTTOM:0px;PADDING-TOP:0px;OUTLINE-STYLE:none;PADDING-LEFT:0px;MARGIN:0px;BORDER-LEFT:0px;DISPLAY:inline;OUTLINE-COLOR:invert;PADDING-RIGHT:0px;text-decoration-style:initial;text-decoration-color:initial">72-2695
- </h1><span style="FONT-SIZE:11px;FONT-FAMILY:verdana,arial,helvetica,sans-serif;FLOAT:none;COLOR:rgb(51,51,51);DISPLAY:inline;BACKGROUND-COLOR:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><span> </span></span>
<h2 style="FONT-SIZE:1.81em;BORDER-TOP:0px;BORDER-RIGHT:0px;WIDTH:100%;VERTICAL-ALIGN:baseline;BACKGROUND:rgb(255,255,255);BORDER-BOTTOM:0px;ZOOM:1;FONT-WEIGHT:bold;COLOR:rgb(69,69,69);OUTLINE-WIDTH:0px;PADDING-BOTTOM:0px;PADDING-TOP:0px;OUTLINE-STYLE:none;PADDING-LEFT:0px;MARGIN:0px;BORDER-LEFT:0px;DISPLAY:inline;OUTLINE-COLOR:invert;PADDING-RIGHT:0px;text-decoration-style:initial;text-decoration-color:initial"><span style="FONT-SIZE:19px;BORDER-TOP:0px;BORDER-RIGHT:0px;VERTICAL-ALIGN:baseline;BACKGROUND:none transparent scroll repeat 0% 0%;BORDER-BOTTOM:0px;ZOOM:1;OUTLINE-WIDTH:0px;PADDING-BOTTOM:0px;PADDING-TOP:0px;OUTLINE-STYLE:none;PADDING-LEFT:0px;MARGIN:0px;BORDER-LEFT:0px;OUTLINE-COLOR:invert;PADDING-RIGHT:0px">Bench
Power Supply, Linear, Adjustable, 1 Output, 0 V, 60 V, 0 A, 2
A</span></h2> is £77 and from Farnell..<br></span></font></div>
<div><font color="#37474f" face="Arial, Helvetica, sans-serif"><span style="FONT-SIZE:20px;FONT-WEIGHT:400"><br></span></font></div>
<div><font color="#37474f" face="Arial, Helvetica, sans-serif"><span style="FONT-SIZE:20px;FONT-WEIGHT:400">have not checked the
specs,</span></font></div>
<div><font color="#37474f" face="Arial, Helvetica, sans-serif"><span style="FONT-SIZE:20px;FONT-WEIGHT:400"><br></span></font></div>
<div><font color="#37474f" face="Arial, Helvetica, sans-serif"><span style="FONT-SIZE:20px;FONT-WEIGHT:400">but from Farnell, you can get refund /
swap if it goes BANG.</span></font></div>
<div><font color="#37474f" face="Arial, Helvetica, sans-serif"><span style="FONT-SIZE:20px;FONT-WEIGHT:400"><br></span></font></div>
<div><font color="#37474f" face="Arial, Helvetica, sans-serif"><span style="FONT-SIZE:20px">From eBay WHEN it goes BANG you are screwed
!!!</span></font></div></div>
<div class="gmail_default" style="FONT-FAMILY:"comic sans ms",sans-serif"> </div>
<div class="gmail_default" style="FONT-FAMILY:"comic sans ms",sans-serif"> </div></div>
<div class="gmail_extra">
<div> </div>
<div class="gmail_quote">On Thu, Aug 9, 2018 at 12:30 AM, Andy Davies <span dir="ltr"><<a href="mailto:andy@andydavies.info" target="_blank" rel="noreferrer">andy@andydavies.info</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT:1ex;MARGIN:0px 0px 0px 0.8ex;BORDER-LEFT:#ccc 1px solid">
<div dir="ltr">
<div dir="ltr">
<div style="FONT-SIZE:12pt;FONT-FAMILY:'Calibri';COLOR:#000000">
<div>Hi Ceri</div>
<div> </div>
<div>I have three of these types for 6V (for powering a flashgun, 12V (for
stepper motors and LEDs)) and 24V (for a stepper motor on a linear rail.</div>
<div> </div>
<div>I’m looking for something that is a complete unit such as <a href="https://www.ebay.co.uk/itm/Adjustable-Linear-DC-Bench-Power-Supply-0-50V-0-3A-Variable-CSI5003XE/222258220290?epid=1542954192&hash=item33bf9f4d02:g:H9sAAOSw5OpZr-V8" target="_blank" rel="noreferrer">https://www.ebay.co.uk/itm/Adjustable-Linear-DC-Bench-Power-Supply-0-50V-0-3A-Variable-CSI5003XE/222258220290?epid=1542954192&hash=item33bf9f4d02:g:H9sAAOSw5OpZr-V8</a></div>
<div> </div>
<div>but it is really important that no flicker shows up on the video at a
shutter speed of 50fps.</div>
<div> </div>
<div>Many thanks</div>
<div> </div>
<div>Andy</div>
<div>
<div style="FONT-SIZE:small;TEXT-DECORATION:none;FONT-FAMILY:"Calibri";FONT-WEIGHT:normal;COLOR:#000000;FONT-STYLE:normal;DISPLAY:inline"></div>
<div style="FONT:10pt tahoma">
<div style="BACKGROUND:#f5f5f5">
<div><b>From:</b> <a title="ceri.clatworthy@gmail.com" href="mailto:ceri.clatworthy@gmail.com" target="_blank" rel="noreferrer">Ceri Clatworthy</a>
</div>
<div><b>Sent:</b> Wednesday, August 08, 2018 8:20 PM</div>
<div><b>To:</b> <a title="hackspace@swansea.hackspace.org.uk" href="mailto:hackspace@swansea.hackspace.org.uk" target="_blank" rel="noreferrer">Swansea
Hackspace</a> </div>
<div><b>Subject:</b> Re: [Swansea Hackspace] bench power
supply</div></div></div>
<div> </div></div>
<div style="FONT-SIZE:small;TEXT-DECORATION:none;FONT-FAMILY:"Calibri";FONT-WEIGHT:normal;COLOR:#000000;FONT-STYLE:normal;DISPLAY:inline">
<div>
<div class="m_7120984441078923537h5">
<div>Quick Google. ...
<div> </div>
<div><a href="https://www.amazon.co.uk/voltage-converter-switch-power-supply/dp/B0197PNKJG/ref=br_lf_m_basujxxaeroo5oa_img?_encoding=UTF8&s=electronics" target="_blank" rel="noreferrer">https://www.amazon.co.uk/voltage-converter-switch-power-supply/dp/B0197PNKJG/ref=br_lf_m_basujxxaeroo5oa_img?_encoding=UTF8&s=electronics</a><br></div>
<div> </div>
<div> </div></div>
<div> </div>
<div class="gmail_quote">
<div dir="ltr">On Wed, 8 Aug 2018 20:17 Ceri Clatworthy, <<a href="mailto:ceri.clatworthy@gmail.com" target="_blank" rel="noreferrer">ceri.clatworthy@gmail.com</a>> wrote:<br></div>
<blockquote class="gmail_quote" style="PADDING-LEFT:1ex;MARGIN:0px 0px 0px 0.8ex;BORDER-LEFT:#ccc 1px solid">
<div>That's a high voltage !!!!!!!
<div> </div>
<div>A simple current source circuit will work the best for LEDs </div>
<div> </div>
<div>One of my first jobs was KRAZY high power LED lighting designer </div>
<div> </div>
<div>If you can get a 40 or so Volt PSU.</div>
<div>then easy circuit. ..</div>
<div>But I do recommend a protection resistor too</div></div>
<div> </div>
<div class="gmail_quote">
<div dir="ltr">On Fri, 27 Jul 2018 12:45 Andy Davies, <<a href="mailto:andy@andydavies.info" rel="noreferrer noreferrer" target="_blank">andy@andydavies.info</a>> wrote:<br></div>
<blockquote class="gmail_quote" style="PADDING-LEFT:1ex;MARGIN:0px 0px 0px 0.8ex;BORDER-LEFT:#ccc 1px solid">
<div dir="ltr">
<div dir="ltr">
<div style="FONT-SIZE:12pt;FONT-FAMILY:'Calibri';COLOR:#000000">
<div>PS It is also important that it does not induce flicker in the light
as I will be shooting video with
it.</div></div></div></div>_______________________________________________<br>Hackspace
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