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Thread: Chinese PSU voltage range

  1. 24-03-2015, 08:19 #1
    brian2957's Avatar
    brian2957
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    Default Chinese PSU voltage range

    As a few people have asked me this question I thought it best to start a new thread . I bought one of these http://www.ebay.co.uk/itm/25VA-24V-H...item19fb627f8b from Grant ( struth ) a couple of weeks ago and have been using it ever since with my Amptastic Mini-1 ( set at 13.5V ) . For some reason the seller doesn't point out in his Ebay listing that these PSUs can be adjusted. This morning I had a bit of a play and had the PSU adjusted down to 5V minimum and 24V maximum so these appear to be quite flexible . I've compared this PSU to the PSU supplied with the Mini-1 and it does make for an audible upgrade in SQ .



    The adjustment can be made via the little brass screw to the rear of the transformer . Sorry but I'm not an electronics engineer ( nor a photographer for that matter )so I don't know what these parts are called .
    I also found that changing the cable and the plug on the DC cable was a worthwhile exercise . http://www.ebay.co.uk/itm/OYAIDE-DC-...item2320762861 Not cheap but excellent qualiity .
    Tools required are a Philips screwdriver , an Allen key , and a little flat headed screwdriver . All available from the £1 shop .
    Last edited by brian2957; 24-03-2015 at 08:59.
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    Brian

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  2. 24-03-2015, 09:16 #2
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    Firebottle
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    Good one Brian. The part is a multi-turn pot (potentiometer).

    Alan
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  3. 24-03-2015, 09:17 #3
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    what do you mean you dont know what its called Brian...its a thingie
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    Grant .... ؠ ......Don't be such a big girl's blouse

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  4. 24-03-2015, 09:39 #4
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    Thanks Alan . I thought it was called a Dooverlackie ( adjustable ) or summat Grant
    Regards
    Brian

    Sell your cleverness and buy bewilderment . (Rumi )


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  5. 24-03-2015, 10:01 #5
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    Quote Originally Posted by brian2957 View Post
    Thanks Alan . I thought it was called a Dooverlackie ( adjustable ) or summat Grant
    Regards,
    Grant .... ؠ ......Don't be such a big girl's blouse

    I've said it before and I'll say it again: democracy simply-doesn't-work
    .... ..... ...... ...... ................... ..... ..... ..... ..... .....
    FIIO K7 BT, M11 PLUS, BTR7, KA5 - OPPO BDP-103D - PANASONIC UB450 - PANASONIC 4K ULTRA HD TV - PIXEL 6 - AVANTREE LR BLUETOOTH - 2* X600 SOUNDCORE - HEADPHONES INCLUDE, FIIO, NURAPHONES', FOCAL, OPPO, BOSE, CAMBRIDGE, BOWER & WILKINS, DEVIALET, MARSHALL, SONY, MITCHELL & JOHNSTON - 2*ZBOOK'S- MERCURY BD ROM, ROON, QOBUZ, TIDAL, PLEX, CYBERLINK, JRIVER - MULTI HDD'S -

    Oh my god! There's nothing wrong with the bidet is there?

    “Nothing discloses real character like the use of power. It is easy for the weak to be gentle. Most people can bear adversity. But if you wish to know what a man really is, give him power. This is the supreme test. It is the glory of Lincoln that, having almost absolute power, he never abused it, except on the side of mercy".

    “You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police ... yet in their hearts there is unspoken fear. They are afraid of words and thoughts: words spoken abroad, thoughts stirring at home -- all the more powerful because forbidden -- terrify them. A little mouse of thought appears in the room, and even the mightiest potentates are thrown into panic.”

    "You don't have free will. You have the appearance of free will.”

    “There's a war out there, old friend. A world war. And it's not about who's got the most bullets. It's about who controls the information. What we see and hear, how we work, what we think... it's all about the information!”


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  6. 26-03-2015, 01:29 #6
    maxrob200
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    Thingameebob.

    I ordered one of these so it's good to know that the voltage is adjustable. Does it come up on the display or does the voltage need to be measured using a multi meter
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  7. 26-03-2015, 07:25 #7
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    It comes up on the display .
    Regards
    Brian

    Sell your cleverness and buy bewilderment . (Rumi )


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  8. 24-04-2015, 17:32 #8
    agk
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    Might be quite a handy box if the ampage was higher.
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  9. 24-04-2015, 17:34 #9
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    OK, forgive the really stupid question. Could one of these be used to power a turntable? I'm thinking my 301 which needs ~17W.
    SS
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  10. 24-04-2015, 17:35 #10
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    Works very well with the Mini-1 Andrew .
    Regards
    Brian

    Sell your cleverness and buy bewilderment . (Rumi )


    Korus Computer Audio music server
    JustBoom DAC . HRT Musicstreamer 2
    Amplifier : Sony TA FB740R
    Speakers : Tannoy 637
    Interconnects : MS Audio / Klotz MC5000 .
    Speaker cables : Western Electric 16AG
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