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(Topic ID: 153807)

Why and when did Williams change motor nameplate from 24 to 27 volts

By SteveinTexas

8 years ago


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    #2 8 years ago
     
    SDM

    EMsInKC

    Pinside member

    US Kansas City, MO

    10y 79,550 4,016 22

    Well, schematics for Grand Prix, which came out in December 1976, show the transformer output voltage as 24v. As far as I know, that's what they always used after they dropped from 50v. I've never known them to use 27v

    I looked up several other games earlier in the 70s on IPDB. All 24v for coils.

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