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Member's Forum MP710086 change input voltage from 110V to 240V
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Related

MP710086 change input voltage from 110V to 240V

rsjawale24
rsjawale24 29 days ago

As the title suggests, I need to change the input AC voltage of Multicomp Pro MP710086 bench top power supply from 110V to 240V AC.

I received this power supply as one of the prizes in the Hackster holidays giveaway but they sent me a model with 110V AC operating supply. 

I tried taking a look at the back panel and there doesn't seem to be a voltage change switch. Is there any switch inside the supply? Or any other way to change the input voltage?

I cannot use it as the supply in my country is 240V AC.

Pictures for reference below. 

imageimage

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Top Replies

  • inavitech
    inavitech 29 days ago +3
    Probably one of the quickest ways is to order one of those travel converters that allows you to convert 220 to 110. They sell on Amazon form $30 USD and up. Probably on-line elsewhere as well.Otherwise…
  • kmikemoo
    kmikemoo 29 days ago +2
    rsjawale24 It looks to be an Owon SP Series DC Power Supply. https://www.owon.com.hk/products_owon_sp_series_1_ch_dc_power_supply As you have already determined, the power supply doesn't look like it…
  • rsjawale24
    rsjawale24 29 days ago in reply to kmikemoo +2
    Yes, it is OWON rebranded power supply. Yup, that seems to be best and cost effective solution.
  • Jan Cumps
    0 Jan Cumps 28 days ago

    Looks like the only task is to change the fuse:

    image

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  • rsjawale24
    0 rsjawale24 28 days ago in reply to Jan Cumps

    No, the transformer is specifically designed for 110V AC input. The power supply has a toroidal transformer with no specs written on it. 

    For example- I opened up the soldering station and this is what is written on the transformer.
    All these units also come with US plugs. I have modular socket at my home so plugs are not an issue but the operating voltage is. 

    The transformer takes 110V AC, steps down to 24V AC for the soldering iron and 9V AC for the PCB Panel with LCD. There is a small bridge rectifier near the 9V connector. 

    I'm thinking, if I can simply replace this transformer with a 240V AC to 24V AC at least the soldering iron will work and I will bypass the AC connector and connect 9VDC supply to the panel. 

    image                image

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  • rsjawale24
    0 rsjawale24 28 days ago in reply to acdc90

    Unfortunately, the power supply transformer doesn't have any label. But other products do have a label on the transformer.

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  • rsjawale24
    0 rsjawale24 28 days ago in reply to Jan Cumps

    True. Even I was surprised. The sticker on the back save me, otherwise I would have plugged it in directly.

    What is more shocking is the there were 2 winners of the grand prize and both are in South Asia and we have 230V AC supply. 

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  • rsjawale24
    0 rsjawale24 28 days ago in reply to electronicbiker

    The image is quite clear for me. Maybe some issue with quality when uploaded here. 

    The D panel is for RS232 communication programming/control through SCPI commands I guess. It also communicates via USB. I checked the website as well, they clearly have two different models of the project one for 110V AC and another for 230 V AC

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