Now I'm trying to design a circuit which have 2 voltage level (12V and 3.3V). What I want to create is simple switch using 3.3V to turn off 12V. I know there are thousand question about transistor on this site, but after spending some time scrolling, I haven't found what I wanted.
So far, this is what I have designed and simulate it on Proteus.
The question is, do I have a wrong circuit? or perhaps the Proteus simulator is not correct? Thanks in advance. Please ask if this question is not clear. Thanks :D