Jump to content
Electronics-Lab.com Community

Electronic latching circuit?


Recommended Posts

I'll suggest a simple bistable using two transistors. It'll work with any voltage up to the limit of the transistors, but only with a DC supply and load.

You could switch a relay as the load (don't forget the protective diode). The circuit shown, with two BC108 transistors, will switch up to 200mA. If you want more, you'll need to replace TR2 with a power darlington.

post-20531-14279143174662_thumb.png

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...
 Share

×
  • Create New...