• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Advice on an emergency lighting circuit design?

Status
Not open for further replies.

gardenyu

New Member
I am designing an emergency lighting control circuit recently. I came to this post as in

http://www.electro-tech-online.com/threads/driver-transitor-for-led-emergency-light.41285/

This design looks reasonable, but I would like to do two changes:

1. keep the LEDs on while AC is there, and dim the light to some extent (LEDs remain on with battery power) and light up a warning LED when AC is out.

2. I don't like the 1000uF capacitor in line, since this circuit is meant to be working for long time. Will you recommend some AC-5V DC regulators ( say 5-20VAC input optional)?
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top