Hi folks. I like to think of myself as a tinker. I am by no means an educated person in the world of electronics. I can do simple, logical circuits and stuff, but that is about all I understand at this time.
I have a project that I am wanting to work on, and it calls for a specific type of switch. Only problem, I don't know what it would be called so that i can go buy one. Let me describe what I need it to do.
It will run on DC, probably a 9v or equal voltage in AA batteries. I need a switch that will be held open when the current is running to it. If that current is shut off, the switch will close and allow current from another source to flow. So, basically, the 9v will hold the switch open. if the 9v source is shut off, the switch will close and allow a buzzer to operate for a signal that the first source was shut off.
Could someone point me in the right direction as to what kind of switch that would be, if in fact they make something like that? The voltages are not set in stone, so if the requirements are different, I can probably still adjust at this planning stage. but it would still need to be DC powered, and preferably smaller instead of larger. Thanks!
I have a project that I am wanting to work on, and it calls for a specific type of switch. Only problem, I don't know what it would be called so that i can go buy one. Let me describe what I need it to do.
It will run on DC, probably a 9v or equal voltage in AA batteries. I need a switch that will be held open when the current is running to it. If that current is shut off, the switch will close and allow current from another source to flow. So, basically, the 9v will hold the switch open. if the 9v source is shut off, the switch will close and allow a buzzer to operate for a signal that the first source was shut off.
Could someone point me in the right direction as to what kind of switch that would be, if in fact they make something like that? The voltages are not set in stone, so if the requirements are different, I can probably still adjust at this planning stage. but it would still need to be DC powered, and preferably smaller instead of larger. Thanks!