Hey Folks,
I've been lurking for a while, learning lots.
I have a project I'm working on and I can't figure out a good option.
The signal comes from a 555 setup in astable mode, 1 sec on 1 sec off. The output I want it to connect to control 2 circuits. 1 will ground a +12v and the other will power with +12v.
I've tried 2 pnp and they heat up and bunch of bad things happen. I also saw that a pnp and an npn combo could switch the circuits in alternating mode, which would be fine, but I couldn't set it up either. Both transistors are partially on when the 555 is in low. This is an issue I don't know how to fix.
So my next thought would be to put a dpdt chip to control the 2 pnp transistors.
Is there a simpler method?
I've been lurking for a while, learning lots.
I have a project I'm working on and I can't figure out a good option.
The signal comes from a 555 setup in astable mode, 1 sec on 1 sec off. The output I want it to connect to control 2 circuits. 1 will ground a +12v and the other will power with +12v.
I've tried 2 pnp and they heat up and bunch of bad things happen. I also saw that a pnp and an npn combo could switch the circuits in alternating mode, which would be fine, but I couldn't set it up either. Both transistors are partially on when the 555 is in low. This is an issue I don't know how to fix.
So my next thought would be to put a dpdt chip to control the 2 pnp transistors.
Is there a simpler method?