Jump to content
Electronics-Lab.com Community

Outdoor Light Status Indicator


Recommended Posts


You don't need to limit the voltage to an LED, just the current an LED always has a constant voltage drop across it just like a normal diode except it's 1.9V or 3.5V instead of 0.6V. Normally a resistor does this but with AC a capacitor can be used as it has an impedance and limitts the AC current. By the way but even though I got away without using a 1k resistor (to limit the surge current) when I used my circuit to power a high brightness LED I would recommend you add one as some LEDs might be more sensitive.

VLED can be normally ignored as it's quite low compared to the mains v oltage but if you want to power more than 10 3.5V blue LEDs in series then I recommend you take it into consideration.

post-0-14279142388988_thumb.gif

Link to comment
Share on other sites

Thanks for all of the ideas. That is just what I need. I must be brain dead. I'm was not  thinking that an LED is really a diode. I don't have to be concerned about the voltage drop.

I have a 6 week old baby at home who has proven to be nocturnal. As a result I have been very sleep deprived lately. Sorry for the confusion. You guys are a great help.

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...