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Emergency

IC 555 Automatic Emergency Light Circuit

Last Updated on June 1, 2026 by Swagatam 68 Comments

simplestautomaticemergencylightcircuitusingIC555

The discussed 2 simple IC 555 based emergency lamp system employs just a single IC 555 and yet is able to switch more than 20 LEDs directly, it will illuminate the LEDs only during the absence of mains power and ambient light. 1) Using IC 555 as a Comparator The proposed circuit is not only […]

Filed Under: Lamps and Lights Tagged With: 555, Automatic, Emergency, Light

Smart Emergency Lamp Circuit with Maximum Features

Last Updated on June 1, 2026 by Swagatam 120 Comments

smart E light

In this post I have explained about a simple yet sophisticated automatic emergency light circuit which can be considered “smart” due to the involved advanced features and an inexpensive design. The idea was requested by Mr. Lokesh. Technical Specifications Hi sir, I am so glad to see your interest towards electronic circuits. So eagerly waiting […]

Filed Under: Lamps and Lights Tagged With: Emergency, Features, Lamp, Maximum, Smart

Emergency Generator Circuit Power Distribution

Last Updated on May 21, 2026 by Swagatam 1 Comment

truthtable

In this post I have explained a twin generator network system to be used for two separate houses during power failure and through automatic changeover.The idea was suggested by Mr. Ahmad. The Circuit Idea and Objective Thank you for posting the new and useful circuits. I am one of interesting in your website. This work […]

Filed Under: Grid and 3-Phase Tagged With: Distribution, Emergency, Generator, Power

Cell Phone Emergency Charger Pack using Ni-Cd Batteries

Last Updated on May 17, 2026 by Swagatam 62 Comments

4aaacellholder

In this post  I have explained the construction of a simple emergency charger pack using Nicket Cadmium (Ni-Cd) batteries for your cellphones and smart phones for emergency charging of your cellphone, so that next time you are never stuck on a highway with a full discharged dead cellphone battery. Circuit Concept It often happens, our […]

Filed Under: Battery Charger Circuits Tagged With: Batteries, Cell, Charger, Emergency, Pack, Phone

Emergency Incubator Heater Circuit with Battery Charger

Last Updated on January 1, 2024 by Swagatam 1 Comment

incubator2Bheater

In this post I have explained a 12V power supply with battery charger circuit which can be implemented as an uninterruptible emergency heating system for incubator chambers. The idea was requested by Mr. Arya. Technical Specifications I’ve read all your good article, but can you help me to design an Linear PSU that provide 12 […]

Filed Under: Temperature Controllers Tagged With: Battery, Charger, Emergency, Heater, Incubator

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