Continue to Site

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.

  • 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.

Circuit to give an RF remote audible indication of a mains bulb failure

Status
Not open for further replies.
Don't think it's critical. I've even used an old shaded-pole mains motor as a current transformer.
View attachment 121904
The blue wire is mains neutral, which goes the scenic toute around the motor core a few turns.
(The fan-heater was just a test load).
I've done something similar with an old transformer. I cut away the old secondary to give space. The old primary of lots of turns became the secondary, and the primary was a single turn. I connected the secondary to a bridge rectifier and an LED. I used it to know when an immersion heater was taking current.
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top