rookie guy here.
I am experimenting with a control circuit for making an LED cube, but discovered some wierd abnormality in the transistors i was using.
I wanted to test the circuit by replacing an arduino with R2, and simulate ON when the resistor is closed to 5v, and OFF when the R2 part of the circuit was open. This did NOT work on my planned transistor, D882-Y. I thought i'd try with another transistor, and opted therefore for another transistor i had laying around, BC547B. This worked.
To sum it up, D882-Y had a closed circuit between Collector and Emitter by default, while BC547B needed voltage on the base to open up, as expected.
I tried the D882-Y both ways without any success.
Am i doing something wrong, or is my transistor defect?