0 to 150 Volt AC Bench Power Supply Build

RE: 0 to 150 Volt AC Bench Power Supply Build

clem57 — Sun, 11 Aug 2019 02:28:25 GMT

Maybe old, but I bet really useful as well made too.

RE: 0 to 150 Volt AC Bench Power Supply Build

Gough Lui — Mon, 15 Apr 2019 00:50:31 GMT

That's one massive CT. Glad you managed to fit everything into the box in the end. Definitely a nice looking, relatively bulletproof build. Congrats!

- Gough

RE: 0 to 150 Volt AC Bench Power Supply Build

fmilburn — Mon, 15 Apr 2019 00:38:20 GMT

Hi John,

Great build as usual. I would not even think of trying to build something like this - it reminds me of why I choose to stick with low voltage and for the most part digital. It is best to leave such things as this to those who know what they are doing :-)

Frank

RE: 0 to 150 Volt AC Bench Power Supply Build

three-phase — Sun, 14 Apr 2019 19:12:29 GMT

Excellent project that has turned out very functional and easy to use.

By the look of the current transformer, it looks like it is a unit for use on busbars in electrical panels, the shape of the central hole is designed to accept cables or square / rectangular bus-bars.

If you can find out its ratio, then you could replace it with a more suitable unit to give you better resolution on the ammeter, if you felt like it. Industry standards are 1A or 5A secondaries, so if it is one those it would be relatively easy to source something, if it is a more unique rating then you will probably be best to leave it as you have it.

Kind regards.

RE: 0 to 150 Volt AC Bench Power Supply Build

DAB — Sun, 14 Apr 2019 18:52:12 GMT

Very good build John.

Well done.

DAB

RE: 0 to 150 Volt AC Bench Power Supply Build

ralphjy — Sun, 14 Apr 2019 15:26:26 GMT

Hi John,

Very nice build. I like the safety features that you implemented. It would be nice to have an AC supply around but I probably wouldn't use it enough to justify it. I don't have a nice lab space like yours to accommodate it.

Just a quick comment. It appears from the schematic that the AC socket on the front panel is connected in parallel with the output jacks, If that is true, I would recommend adding a warning label so no one uses it accidentally as a convenience outlet.

Ralph

RE: 0 to 150 Volt AC Bench Power Supply Build

shabaz — Sun, 14 Apr 2019 12:04:32 GMT

Hi John,

This looks like an excellent piece of equipment! Very clever trick with the relay too, it's a really neat safety idea.

This project looks awesome all-round, and very flexible, that's a great adjustable range and power capability.

A while back I purchased an isolation transformer with center-tapped secondary, and a 100V transformer. I'm thinking of combining it all somehow, to have a unit that will give me 100V, 120V, and 240V. But now I'm thinking I should have obtained a variac for more flexibility. Sometimes it's hard to decide on feature-set when building such custom stuff!

RE: 0 to 150 Volt AC Bench Power Supply Build

14rhb — Sun, 14 Apr 2019 08:27:49 GMT

Hi John,

Thanks for this interesting blog - just what I need whilst drinking my coffee on Sunday morning [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-785c030e-31d8-4cd3-bc45-5ca19cd38964/contentimage_5F00_1.png:16:16]. It looks like a great build and I've learned a lot just reading through - including the current transformer. Not sure I will need such a high voltage, but if I do then I'll be following in your tracks.

Rod

RE: 0 to 150 Volt AC Bench Power Supply Build

genebren — Sun, 14 Apr 2019 04:36:36 GMT

John,

That is another high quality build that you have done. Everything looks great and works very well. A very handy piece of equipment!

Well done!

Gene