need help with reset circuit

[lotrfan76]

Hi folks! This is my first attempt at posting so please let me know if I'm making mistakes or not including enough information.
I would like to design a reset button. I have a simple 12V buzzer which is tied to 12V power and turns on when GND is supplied by any of 4 "warnings". I put in a cut-off switch which simply cuts power to the buzzer until the "warning" can be fixed. However, it would be nice to have a momentary reset switch in there that I could hit and have it shut down that "warning" until it can be addressed yet still allow other warnings to sound. I know there must be some easy way to implement this but I could use a little help getting started.
Any suggestions?
Thanks in advance!

 

[KMoffett]

I have not tested this circuit. It's an idea for the expansion of one from: https://www.electro-tech-online.com/threads/analog-one-shot.99389/ which I did test...but I think it will work.

Ken

 

[lotrfan76]

Hi Ken and thanks for the reply.
I followed the thread you sent me and it looks like my problem is very similar to the previous OP. I looked at your schematic but I'm wondering where do I tie in my "warning" signals which are basically just providing GND? I'm guessing I would just pull out those 4switches and replace each one with one of my inputs?
Thanks again!

 

[KMoffett]

Not having a wiring diagram for you system, I assumed that the 4 warning-switches in your existing system would be the 4 grounding-switches at the bottom of my schematic. Rather than go directly to the buzzer, they would wired individually to each of my circuit sections, as you say.

Ken

 

[lotrfan76]

Yes, that sounds right. Ok, thanks a bunch! Now I just have to go find some SCRs!

 

[KMoffett]

MCR100-6G ON Semiconductor Thyristors - Diacs, Sidacs, SCRs & Triacs

Ken