Hi I am very much a beginner at electronics, only having done one big project before. I am now setting upon building a new project. I have some basic questions before I begin experimenting and could use any advice the experts out there have.
I will be creating a grid of heat cells (the actual heat cell specs are not important at the moment) I want to be able to turn on a specific heat cell by putting it's row and its column HIGH using a microcontroller. This will then turn on the power to the heat cell.
I have drawn up a basic sketch attached. I am using 2 NPN transistors. The basic idea is that if the first transistor receives current from Column1, it will flow the current from Row 1 into the second transistor. If Row 1 is on then the second transistor will open the switch to the heating cell.
Now I don't know much about transistors, maybe there is a single type of transistor so I don't have to use 2? Also do I need to attach the second transistor to ground somewhere?
Anyway just throwing this out there. If any of you have time maybe you can steer me.
Thanks,
Dan
I will be creating a grid of heat cells (the actual heat cell specs are not important at the moment) I want to be able to turn on a specific heat cell by putting it's row and its column HIGH using a microcontroller. This will then turn on the power to the heat cell.
I have drawn up a basic sketch attached. I am using 2 NPN transistors. The basic idea is that if the first transistor receives current from Column1, it will flow the current from Row 1 into the second transistor. If Row 1 is on then the second transistor will open the switch to the heating cell.
Now I don't know much about transistors, maybe there is a single type of transistor so I don't have to use 2? Also do I need to attach the second transistor to ground somewhere?
Anyway just throwing this out there. If any of you have time maybe you can steer me.
Thanks,
Dan