The Joule Theaf is a simple surcait that steps up the current voltage supply. it acts as an inverter.
whats so spesial about this surcait is that its able to squeez most all the joule inside a battery to lite up the LED. In this test i am able to lite up 5 LED with a 1.5v AA batery.
Test1:
i am using a 2n2222 transistor and a 1/2'' toroid with bifiler winding and 100 Ohm resistor.
Its liting up 2 LED at once.
Test2:
with this surcait im using a 12v NEON, a 100Ohm resistor, a 2n2222 transistor, 5 LED and a 1.5v AA batery. in this test i am able to lite up 5 LED with the help of a 12v NEON. this is to ensure that the transistor wont fry!
Hers the surcait diagram
