For my project it is neccessary to change the current direction inside the circuit.
I figured that it would be best to do so using 4 Transistors to be able to switch each pole.
Therefor i need to control two Transistor with one pin, but i struggle on doing so.
Assuming a valid data sheet my transistor strukture is ECB.
I built a test circuit to try control two transistors at once.
The tansistors are functional, because the circuit works if I take one of them out.
Why does’nt this work? What function of the transistors did i get wrong?
Please see Picture below.