Improved NOT Gate

So after taking a break by drawing up flowcharts for my lab report, I was drawn back to the NOT Gate problem. I realised I could probably isolate the power supply by using another transistor, with the supply connected to the base and the emitter of the transistor. The collector would be connected to the output and to the collector of the second transistor. 

It works essentially the same way as the previous NOT gate, but it doesn't short the whole power supply. 


There you have it. A working NOT Gate. And it does actually work. I did test it.