by0ung(at)brigham.net Guest
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Posted: Sun Feb 08, 2009 11:33 pm Post subject: diode on a starter |
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Quote: | You mentioned the need for a diode on the starter solenoid to prevent
voltage spikes, what specification of diode is used and how is it wired in?
>>>>>>>>>>>>>>>>.
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First I wired my kolb so that when the starter is activated,,,, nothing
else can be on... that way a spike cant do any damage... I do not have a
diode on mine. If anyone wants a quick schematic let me know.
If you want to put on a diode... most any rectifying diodes should work
fine (little black diode about 1/8 inch diameter and just over 1/4 inch
long).... they will have a line that goes around them on one end, if the
end with the line is toward the negative terminal they will conduct. So the
secret is to put the end with the line on it on the positive terminal and
the other end on the negative terminal of the starter solenoid coil... that
way when the power is applied there will be no flow through the diode....
but when the circuit breaks ( you let go of the starter switch) the energy
stored in the electrical coils that normally creates a back flow will be
absorbed in the diode.
If you put it in backwards,,, it will blow the diode or the fuse to the
starting circuit.
The final test,,,, for safety and to eliminate shaking so you can see
better, disconnect the wire going to the starter,,, and touch a positive
wire to the solenoid coil with the other side attached to the neg, ground.
You should hear it click. When you remove the wire[Boyd] it will click
back and you will see a spark when the wire is removed..... after you
install the diode and do the same test the spark should be much much
smaller. That way you will know it is in correctly and working.
Boyd Young
Kolb MKIIIC
Brigham City Ut.
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