# Decent, inexpensive bench power supply?

**URL:** <https://lookmumnocomputer.discourse.group/t/decent-inexpensive-bench-power-supply/236>\
**Category:** DIY STUFF\
**Created:** [February 10, 2020, 8:28am UTC](https://lookmumnocomputer.discourse.group/t/decent-inexpensive-bench-power-supply/236 "2020-02-10T08:28:46Z")\
**Posts on this page:** 1\
**Showing post:** 33

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**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\
**Post date:** [October 2, 2022, 1:33pm UTC](https://lookmumnocomputer.discourse.group/t/decent-inexpensive-bench-power-supply/236/33 "2022-10-02T13:33:11Z")

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Since this topic’s come up again, I’ll mention I bought this about a year ago:

 ![PXL_20211014_164840227.PORTRAIT](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/7/4/7402697685720302061a841767eb37bb295907c6.jpeg)

These seem to be available new for $170 to $200 or so. I bought mine used from here:

> **[HY3003F-3 Mastech DC Power Supply](https://www.valuetronics.com/product/hy3003f-3-mastech-dc-power-supply-used)**
>
> We have used Mastech HY3003F-3 dc power supplys 90 W, 30 V, 3 A available. Thousands of model numbers in stock. Sell your test equipment to us too!

They’re not showing a price, instead a “request quote” button, but when I bought mine it was $60. A steal. It was in excellent condition, just a bit of minor cosmetic discoloration, working perfectly. Two variable voltage 3 A supplies (can be set up as ±12 V — tie one side’s negative post to ground for +12 V and the other side’s positive post to ground for -12 V) and a fixed 5 V supply, variable current limit.

Same vendor has a lot of other DC supplies, used and new; looks like you have to request quote on any of the used ones.

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