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Forum Clearance - 30v 3A TENMA PSU
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Forum Thread Details
  • Replies 23 replies
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  • bench psu
  • tenma 72-2705
Related

Clearance - 30v 3A TENMA PSU

14rhb
14rhb over 6 years ago

I regularly look through the clearance lines on CPC Farnell (a UK subsidiary of Farnell/Avnet) and currently they have a Tenma 30v/3A PSU for £51.84 (incl. tax and shipping)....not bad if someone is looking for a reasonable entry level PSU.

 

See https://cpc.farnell.com/tenma/72-2705/power-supply-0-30v-programmable/dp/IN0763769

 

Rod

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  • shabaz
    shabaz over 6 years ago +3
    Thanks for the info! That looks useful, and I could do with a small linear supply.. it's got fairly accurate readback capability it seems, and also the supply is programmable.. I could not resist at that…
  • stevesmythe
    stevesmythe over 6 years ago in reply to shabaz +3
    I have succumbed too. After all, it was my birthday last week (honestly). When I first looked, there were only two in stock, so I thought I'd better get a shift on!
  • stevesmythe
    stevesmythe over 6 years ago in reply to shabaz +3
    Thanks! I hesitated before ordering and missed the cut-off, so mine won't arrive today. I'm glad there is a manual (even with typos and mistakes). I wasn't sure if there would be. My power supply needs…
  • stevesmythe
    stevesmythe over 6 years ago

    Well-spotted Rod. I have been thinking about getting a decent bench PSU for a while. Might take the plunge.

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  • 14rhb
    14rhb over 6 years ago in reply to stevesmythe

    It came up under the clearance section with a discount of something like 45% (to arrive at that price) however the direct link doesn't seem to highlight the fact it is a reduced price at £51. However I still think it looks like great value for a hobbyist setup. If you do purchase one I'd be interested to know what you make of it; I recently bought a 15v/2A Duratool PSU from CPC Farnell (Duratool D03232 Power Supply ) so could not really justify getting another so soon !

     

    Rod

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  • shabaz
    shabaz over 6 years ago

    Thanks for the info!

    That looks useful, and I could do with a small linear supply.. it's got fairly accurate readback capability it seems, and also the supply is programmable..

    I could not resist at that price, so I have ordered one.

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  • stevesmythe
    stevesmythe over 6 years ago in reply to shabaz

    I have succumbed too. After all, it was my birthday last week (honestly). When I first looked, there were only two in stock, so I thought I'd better get a shift on!

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  • 14rhb
    14rhb over 6 years ago in reply to stevesmythe

    Happy Birthday Steve image

     

    Rod

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  • stevesmythe
    stevesmythe over 6 years ago in reply to 14rhb

    Thanks!

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  • shabaz
    shabaz over 6 years ago in reply to stevesmythe

    Hi Steve,

     

    Happy Birthday!

     

    Also, the supply arrived this morning, so hopefully you'll have got yours today too. I won't get a chance to try it out properly until tonight or later in the week, but I did switch it on and try it for five minutes..

    it's all-steel construction with a plastic front panel, very heavy since it's got the transformer, and you can hear the relays clicking through the ranges. The user interface, since it has just 2 rotary knobs with buttons, is ok-ish, I've seen a lot worse! but it will be interesting to see what you think of it too. At first glance there's a few typos and mistakes in the manual, but nothing we cannot figure out I'm sure!

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  • stevesmythe
    stevesmythe over 6 years ago in reply to shabaz

    Thanks!

     

    I hesitated before ordering and missed the cut-off, so mine won't arrive today. I'm glad there is a manual (even with typos and mistakes). I wasn't sure if there would be. My power supply needs are fairly simple, so I'm sure it will do me nicely, but I'm looking forward to not having to hunt around for a suitable power supply when I get a new gizmo!

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  • stevesmythe
    stevesmythe over 6 years ago in reply to shabaz

    Mine came today image .

     

    First impressions are favourable, although I would have appreciated a longer mains lead. As I don't actually have a bench, my power sockets are not just above the bench (I have a desk with sockets in the skirting board), so I can't blame them. It's only a "kettle lead" so easily rectified (no pun intended).

     

    Just a slight hum from the transformer.

     

    It's a bit retro to be provided with an actual CD nowadays. No instructions or manual for the software (imaginatively entitled "72-2705") but seems straightforward.The USB driver installed automatically on one of my Windows 10 PCs, but another of my PCs doesn't like the USB device at all. However, that was also easily rectified as I used one of those cheap CH340 Serial-USB converters. I have an actual serial port on that PC, so I need to dig out a proper serial to serial cable for it (assuming I didn't chuck them all away).

     

    [edit] After installing the software and playing with it via the serial-USB adapter, my PC mysteriously decided to recognise the Tenma's USB port, so all is good now!

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  • shabaz
    shabaz over 6 years ago in reply to stevesmythe

    Hi Steve,

     

    Oh excellent, that's great to hear it functions on Windows 10.. I will try to upload the CD to the cloud somewhere, since I'm bound to lose it!

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