Instructions

rent to pass through, as its resistance rises sharply. Hence the

name. PTC stands for “Positive Temperature Coefﬁcient” and

means that the resistance increases as the temperature rises.

At a voltage of 9 V, a temperature of about 60 degrees is

reached. If you turn off the power and eliminate the error, the

fuse cools down and works like new again.

12 A yellow-green switch

This time, the colour switch must be tested with a yellow

LED. You can use them just like for the other colours. But the

question arises, how the yellow LED would behave together

with the green LED. And indeed, the green-yellow switch

works.