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Instrument voltage limiter

Discussion in 'The Hokey Ass Message Board' started by GinettaG12P, Oct 26, 2012.

  1. GinettaG12P
    Joined: Sep 1, 2012
    Posts: 31


    My 1958 Ranchero has the original 5V limiter to operate the gauges. Can I replace that obsolete bimetal limiter with a solid state LM7805 voltage limiter? Thanks.
  2. ffr1222k
    Joined: Nov 5, 2009
    Posts: 1,162


  3. fordor41
    Joined: Jul 2, 2008
    Posts: 945


    Ron Francis makes a good one also. Solid state. Couple types, depending on how much amp draw will be used. My RF unit has been in my car for about 10-12 yrs or more.
  4. supervert
    Joined: Mar 8, 2009
    Posts: 433


    i made one like whats in post #2 for my plymouth, but in my brothers shoebox i just used a ignition resister and it work just fine to

  5. 49 Custom
    Joined: Apr 17, 2009
    Posts: 282

    49 Custom

    The LM7805 should be fine. There is a thread in the tech archive that discusses the LM7806 for 6v purposes: "How to Build a Voltage Reducer for $3". It is essentially the same process.

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