[NLRS] Goof Proof Transverters

[Rex Greenwell]

 A simple, low cost method of protecting medium power electronics equipment
from reverse polarity connections is to simply connect a silicon diode
across the equipment side of the protection fuse.  Use a diode with an
ampere rating perhaps 1.5 to 2 X the rating of the fuse.  The cathode of the
diode goes to the plus 12 V equipment side of the fuse and the anode goes to
the negative which is usually ground.  Upon connecting the power source in
error the diode will conduct and blow the fuse.  A 3 amp diode could be used
in conjunction with a 1 or 2 amp fuse, a 6 amp diode with a 3, 4, or 5 amp
fuse.  This method does not result in any voltage reduction to the
equipment.

 

73  Rex K0KP EN36vw