RE: Auxillary Variable Bench Power Converter

DAB — Thu, 02 Oct 2014 19:05:01 GMT

Hi John,

Good project and a very nice build.

DAB

RE: Auxillary Variable Bench Power Converter

D_Hersey — Thu, 02 Oct 2014 13:57:02 GMT

Really nice job. I made something like this, sadly without your attention to finishing details, built it on a piece of lumber in point of fact. Embarrassingly, I wound up using it for years and years. The dual display is nice. Analog needle displays might make a nice adjunct as they are more intuitive and can be interpreted more quickly. Of course, they can operate in parallel to your digital displays. Amused by your mechanical sliding of the decimal point. Auto-scaling displays can cause the mistake of 'slipping a DP' or two, causing me to inadvertently construct an X-ray machine awhile back.

Kudos!

Did you use a drill or a step-drill to make your holes? Also, BTW, I happen to have access to gads of CNC equipment should you want to make a metal box on another project and be certain of a one-shot deal.

Nice schematic too, how'd ya' draw it?

That ABS box is pretty but the problem I found in working them is that the material is soft. In metal, you can scratch a little cross-hair where you want the hole, then use a spring-loaded punch to get the party started. The ABS would rupture, and it isn't hard enough relative to the cutting tools to support them accurately. If you drill small pilot holes, you can put a step drill in subsequently to enlarge them if they are accurately placed. If you missed a little, you can use a pointy round file to scooch the hole into place, then return to the party with the step drill.

RE: Auxillary Variable Bench Power Converter

shabaz — Thu, 02 Oct 2014 13:45:12 GMT

Hi John,

This is a nice-looking variable power supply : )