Free three channel power supply  2x30V + 5V - Page 1
Forum section: electronics / general

author: Back2Volts
author_rank: Unknown
timestamp: January 31, 2019, 01:14:42 am
content: I got this power supply from a failed automation lab in the area. I have used it very little. It is a MASTECH HY-3003-3. Heavy as a truck.Let's start with free to anyone in the central Minnesota area.

author: Back2Volts
author_rank: Unknown
timestamp: January 31, 2019, 06:00:22 pm
content: Attached picture. I have a manual I found years back, but it exceeds max size. If interested send me text message with email and I will forward it.I think this is ithttp://hades.mech.northwestern.edu/images/f/f7/Mastech_power_supply_manual.pdf

author: pbarton
author_rank: Frequent Contributor
timestamp: February 01, 2019, 12:04:26 pm
content: That bears a striking resemblance to a Tektronix PS280 power supply.

author: JVR
author_rank: Regular Contributor
timestamp: February 03, 2019, 05:17:51 pm
content: What would postage to Belgium be like?

author: tsman
author_rank: Frequent Contributor
timestamp: February 03, 2019, 05:39:00 pm
content: Quote from: JVR on February 03, 2019, 05:17:51 pmThat wouldn't be cheap. The manual says it is approximately 10kg just for the PSU.

author: Back2Volts
author_rank: Unknown
timestamp: February 04, 2019, 08:51:56 pm
content: I weighs around 23 pounds. I suspect you could get a new one for what you would be paying for packing/shipping.

author: Back2Volts
author_rank: Unknown
timestamp: February 04, 2019, 08:54:19 pm
content: Any one interested in or around the Twin Cities? I will be going to the cities in a couple of weeks.

author: Doctorandus_P
author_rank: Super Contributor
timestamp: February 04, 2019, 09:19:39 pm
content: I always had my suspicion that Tektronix was just rebranded Chinesium.

author: richnormand
author_rank: Unknown
timestamp: February 04, 2019, 10:19:31 pm
content: Or the other way around?Would be nice to see the insides.Things like the filter capacitors values and brands, stability feedback, overload protection (note front panel of Tek), etc...

author: eponte5
author_rank: Newbie
timestamp: February 05, 2019, 05:51:50 pm
content: Funny, I have that power supply as a GW Instek GPC-3030D.The overload LED is if you push the 5V past 3A it lights up. (since there is no meter attached to it, it's the only indication for the 5V.)The bad part about this supply (which I learned the hardway) is the manual states that using it in parallel or series they recommend actually physically attaching wires after setting the buttons. If you don't, it can damage the unit if you push the supply too hard through the internal series/parallel connections.*******(I just saw the same instructions in the Mastech manual in the notes section.) Take heed to this warning... It will fry the slave where you loose control of it. It's on my healing bench to get fixed.....

author: aksg81
author_rank: Newbie
timestamp: March 26, 2019, 01:06:19 am
content: Hello, I'd be willing to take it and put it to good use if its still available.I'm at the UofM in Minneapolis.

author: jlmoon
author_rank: Unknown
timestamp: March 27, 2019, 02:23:12 am
content: If aksg81 doesn't want it, I do.In Fort Worth, Texas. 76180