Jump to content
Electronics-Lab.com Community

Recommended Posts


Yourwins,
The 7812 is a 12V regulator with many transistors and resistors inside. A multimeter cannot measure if it regulates properly, but can tell only if it is shorted. I don't think that it can measure the difference of one that is blown open.
The best way to test it is when it is functioning with a proper input voltage and load.

Link to comment
Share on other sites

Guest Kasamiko

I do a quick and dirty check by applying about 15vdc at the input and monitoring the output pin for 12vdc.. ;D
But without a load sometimes will give a false reading that drop when a load is connected..

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...