Transformer needed for dual voltage secondary clocks.

Discussion in 'Electric Horology' started by railwayj, Oct 5, 2014.

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  1. railwayj

    railwayj New Member

    Sep 22, 2014
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    Does anyone know where I can find a transformer that puts out both 24 and 48 volts d.c. current to operate secondary clocks? I need a replacement. The transformer I had could output several different d.c. voltages but I have been have been unable to locate a replacement. The transformer was in a simplex clock but the transformer wasn't specific to simplex. The clocks I have are Standard Electric Time clocks and require both voltages to operate.
     

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  2. eskmill

    eskmill Registered User
    NAWCC Fellow NAWCC Member

    Aug 24, 2000
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    Region Flag:
    You could use two 120-24 volt transformers with the secondary windings carefully wired in series connection. Remember that the rectified DC voltage will usually be the peak voltage of the AC input.

    Two common "door bell" transformers, usually 20 volt output might be all that's necessary. I don't remember if the 48 volts needed for the AR-2 system is rectified DC or AC. I do recall that they slave clocks did buzz when correcting.
     

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