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Emergency

Emergency LED Lamp Circuit with Battery Overcharge Protection

Last Updated on November 26, 2025 by Swagatam 138 Comments

The following LED emergency light with battery over charge protection feature circuit was designed by me in response to the request sent by PP. Main Features In this article I have explained an LED emergency light circuit with advanced features such as, Using Transistors only The following design of the proposed day/night automatic emergency LED […]

Filed Under: Lamps and Lights Tagged With: Battery, Charge, Emergency, Lamp, Over, Protected

10 Automatic Emergency Light Circuit Diagrams Explain

Last Updated on January 17, 2025 by Swagatam 280 Comments

In this article I have explained 10 simple automatic emergency light circuits using high bright LEDs. This circuit can be used during power failures and outdoors where any other source of power might be unavailable. What’s an Emergency Lamp An emergency light is a circuit which automatically switches ON a battery operated lamp as soon […]

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

SMD LED based Emergency Lamp Circuit

Last Updated on January 2, 2024 by Swagatam 69 Comments

An emergency lamp using SMD LEDs is able to generate illuminations with extreme brightness due to the high efficiency of the SMD type LEDs. Moreover, SMD LEDs also ensure the unit will be very compact and lightweight. The following post explains a simple circuit diagram of an automatic emergency lamp using 36 nos. SMD LEDs. The circuit […]

Filed Under: Lamps and Lights Tagged With: Based, Emergency, Lamp, LED, SMD

Cell Phone Emergency Charger Pack using Ni-Cd Batteries

Last Updated on January 2, 2024 by Swagatam 62 Comments

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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

Solving LDR Controlled LED Emergency Lamp Problem

Last Updated on January 2, 2024 by Swagatam 2 Comments

Simple emergency Lamp 2

The following post discusses the troubleshooting of an automatic LDR controlled emergency lamp circuit which was requested to me via email by one of the keen followers of this blog. I have explained about the issue and its solution. Technical Specifications Dear Sir, I am following you on your website and I thank you for your valuable […]

Filed Under: Lamps and Lights Tagged With: Controlled, Emergency, Lamp, LDR, LED, Solving

Emergency Generator Circuit Power Distribution

Last Updated on January 2, 2024 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

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