Pianotech

  • 1.  PianoDisc solenoid amperage?

    Posted 02-16-2024 18:32

    I'm using a single PianoDisc solenoid for my own project. What's the max amperage it can handle? 12A? I know that solenoids in original PianoDisc system is fed with 40V 12A. 

    For the present as I have funneled 12V 2A to my single solenoid, I'm not getting enough of dynamic range. The strongest hit is not enough powerful for forte and as I decrease the current the solenoid gets weak too soon to push a key.






  • 2.  RE: PianoDisc solenoid amperage?

    Registered Piano Technician
    Posted 02-17-2024 02:35

    7amps.  There is a fuse on the power supply that feeds the solenoid rail limit of 7A.



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    Dave Foster, RPT
    Michigan State University
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    Original Message


  • 3.  RE: PianoDisc solenoid amperage?

    Posted 02-17-2024 07:33

    Thanks for the answer! Have you seen anywhere in the specs the ohmage of a standard short key solenoid? My measurements shows 12.5 Ohm. 





    Original Message