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Reply to "Voltage display"

Finding the AC meters is always the tricky part, most of the digital meters are of the DC variety.  A few years ago, I painted an old beat up PW boxcar and installed two AC 0-20V meters, one on each side.  Obviously, I also had to install collector trucks to grab the voltage.


The tricky part was the meters required a totally isolated DC supply besides the measured voltage.  So I had to cobble together a little supply that fed a 12VDC<->12VDC Isolated switching supply module.  This powered the meters and they can then measure the track voltage.



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Last edited by gunrunnerjohn
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