"Bass, Jerry" wrote:

Yes, I install 5 PTC Chips for Switched output like Lights, Strobes and

etc.

Then put 8 PTCs for non-switched distribution.  The LED lights if the PTC
opens. You have to remove the load to reset.

I tried them by short circuiting the output and the chip opens quickly.

I have 9 amp down to 1.5 amp chips.  Usually limited to 30 amps per board.
Today's equipment draws very little power. The wing tip running lights

seem

to take the most.

Jerry Bass

I think I know what it is but tell me again Jerry. What is a PTC?
What does PTC stand for?

Paul Lamar

"Bass, Jerry" wrote:

Secret.
Positive Temperature Coefficient. As the temp goes up, the resistance gets
higher, unlike many things where the resistance goes down with temp.  Light
bulbs are another example.
Jerry Bass

So they dissipate more power when a short is applied?
Give us a little dissertation on this subject.

Paul Lamar

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