Home Forums GuitarPCB Build Support R23 on Dr. Phybes- Sub another value?

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  • #19168
    Paul Eliasson
    Participant

    Not sure if 3.9M resistor is an uncommon value; I have some on order. Is there another value resistor I can sub in without affecting things too much?

    #19169
    wilkie1
    Moderator

    You may be able to use a lower value and compensate for it by adjusting the trimmer.  If not you can teepee 2 values to get closer to it..

    #19170
    Cybercow
    Moderator

    3.9M Ω resistors are a fairly common value. Tayda has them. I would NOT sub the value. Rather, you can apply the correct resistors in series to come up with 3.9M Ω until you can get the correct part.

    What other values do you have?

    #19171
    Paul Eliasson
    Participant

    Wilkie and Cybercow, thank you for your replies.

    Given that matched transistors are a must for this build, I figured subbing a value was not ideal at best/ not an option at worst. I have several values inclluding a 3.3M and 680K which in series will get me the closest. My 3.9M resistors will arrive tomorrow however so i’m just going to have to be patient.

     

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