I am new to electronics as evidenced by the question below.
I understand how you can apply current to a transistor's emitter and base to turn something on. And of course if you remove the current the transistor can turn something off.
However I want to turn something OFF when current is applied to a transistor. For example, if a solar cell starts providing current to a transistor, I want that transistor to turn something off. How is this done? With two transistors somehow?
Thanks!
I understand how you can apply current to a transistor's emitter and base to turn something on. And of course if you remove the current the transistor can turn something off.
However I want to turn something OFF when current is applied to a transistor. For example, if a solar cell starts providing current to a transistor, I want that transistor to turn something off. How is this done? With two transistors somehow?
Thanks!