Jump to content
Electronics-Lab.com Community

lookin' 4 switch with reset


blek

Recommended Posts


There are plenty of ways to do this. It depends on what components you have access to?

You can use the 555 timer, some inverting gates (NOT, NAND, NOR), CD4013, 74HC7474, a comparator/op-amp (LM311, LM393, uA741) a microcontroller or even a couple of transistors.

Here's how to do it with a 555 timer which has the advantage of being fairly simple and can provide up to so will directly drive a relay. Unfortunately it also uses lots of power so you'll need to use the 7555 with higher resistor values or another CMOS solution if it's going to be connected to a battery continuously.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
  • Create New...