Home › Forum › Ask A Member › Johnson RDE-17R? › Re: Johnson RDE-17R?
Mumbles could you do an actual current draw … in series…. measurement of that coil under a 6 volt supply.
at .9 ohm coil resistance with a 6volt supply would draw 6.6 amps…. seems like a lot ..maybe
the selenoid ballast resistor could be a simple automotive light bulb…. say 30 watts at 6 volts will allow a 5 amp draw.. probably close enought for that selenoid to pull up. good enough for a test anyway.
A solid resistor would be more appropriate of course being more tolerant to engine vibrations..
Telephone companies used bulbs extensively in the 60-70,s as current limiters (ballast lamps) in central offices. Anytime something got shorted out (load wise) the bulb would simply come on…. saving a blown fuse down the road.
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