Home Forums General DIY Pedal Discussion combo peddle different voltage requirements

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  • #21202
    Todd Evans
    Participant

    Hey all….I just finished a tube preamp/OD pedal, but I’m not too happy with the limits of the tone adjustment of it.  Being a Tube, it requires an 18V power supply and .5 Amp current.  I have a spare tonetweq board sitting around, and thought about adding that to the circuit.  Question is, will I be able to just wire it in series as the build guide says, or will I have problems with 18V running through it?

    Will I just have to have 2 power supplies on the pedal and just chain the signal?

    Thanks in advance.

    #21208
    wilkie1
    Moderator

    The ToneTwEQ will work nicely with 18VDC as long as the electrolytic cap is rated 1.5 times the supply voltage.  i.e. 1.5 X 18 = 27VDC.

    #21209
    Todd Evans
    Participant

    Great to hear.  Thanks for the assistance.  That’s the exact value cap that the PD board needed….good thing I bought extras at 50V.  I just hope it fits in the footprint.. I’ll make it work, I’m sure.

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