I've got an interesting problem. I'm working on a project which will rely on one momentary N.O. pushbutton to activate two systems in order, then another N.O. pushbutton to reverse the first system.
So it works like this:
1. Press N.O. Button, system1 activates.
2. Press N.O. Button, system2 activates and can reactivate whenever button is pressed.
3. Press second N.O. button, system1 goes in reverse.
I know it's possible to wire a relay back on itself so there is a constant flow of current to its coils and it stays energized unless the loop is broken. I need to know if it's even possible to do this with standard NPN or PNP transistors and how to do it.
Don't worry about what the systems are, just assume they're simple on-off.
I've been using the circuit simulator at http://www.falstad.com/circuit/ (brings up Java applet) to try to work this out myself, but can't seem to attach the wire in the right place using the Circuits->Transistors->Switch circuit provided.
If you're now curious what it is, it's my namesake, a Zatnikitel from Stargate SG-1 which only has two buttons: fire/activate and close. System1 is the motor or solenoid used to raise the Zat, and system2 is a sound effects board from RadioShack that has a simple on/off switch I can wire into this thing.
Thanks for any help,
Zatnikitelman-Matt
So it works like this:
1. Press N.O. Button, system1 activates.
2. Press N.O. Button, system2 activates and can reactivate whenever button is pressed.
3. Press second N.O. button, system1 goes in reverse.
I know it's possible to wire a relay back on itself so there is a constant flow of current to its coils and it stays energized unless the loop is broken. I need to know if it's even possible to do this with standard NPN or PNP transistors and how to do it.
Don't worry about what the systems are, just assume they're simple on-off.
I've been using the circuit simulator at http://www.falstad.com/circuit/ (brings up Java applet) to try to work this out myself, but can't seem to attach the wire in the right place using the Circuits->Transistors->Switch circuit provided.
If you're now curious what it is, it's my namesake, a Zatnikitel from Stargate SG-1 which only has two buttons: fire/activate and close. System1 is the motor or solenoid used to raise the Zat, and system2 is a sound effects board from RadioShack that has a simple on/off switch I can wire into this thing.
Thanks for any help,
Zatnikitelman-Matt