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Newly Updated Circuit Projects:

Medical Store LED Cross Sign Circuit [Plus Sign]

Last Updated on January 22, 2022 by Swagatam 15 Comments

Running medical sign light

In this post I have explained how to make an interesting yet simple running LED cross sign or plus sign module for displaying in front of medical stores. Nowadays, it is very common to witness illuminated flashing, chasing LED cross signs in front of medical stores, which work like an advertisement board for attracting the […]

Filed Under: Lamps and Lights Tagged With: Cross, LED, Medical, Plus, Sign, Store

3 Watt, 5 Watt LED DC to DC Constant Current Driver Circuit

Last Updated on January 21, 2022 by Swagatam 152 Comments

3watt5wattleddrivercircuit

The following article provides a simple yet very decent solution for driving powerful LEDs rated at 3 watt or 5 watt. Circuit Objective These 3 watt 5 watt and similar high watt LEDs are able to produce highly intense and powerful light outputs, however these are extremely vulnerable too with their operating parameter. I have […]

Filed Under: Lamps and Lights Tagged With: Constant, Current, DC, Driver, LED, Watt

Cellphone Controlled Car Starter Circuit

Last Updated on January 8, 2022 by Swagatam 59 Comments

cellphonecontrolledcarstartercircuit

The post presents a simple cellphone triggered remote control circuit that can be applied as a cellphone operated remote car starter. The unit would cost less than $20 to build. I have already covered quite a few interesting cellphone remote control circuits in this blog, all of which can be implemented to control or toggle […]

Filed Under: Automobile Electronics Tagged With: Cellphone, Controlled, Starter

Infrared (IR) Controlled LED Emergency Lamp Circuit

Last Updated on January 5, 2022 by Swagatam 22 Comments

Here I have explained a an emergency lamp circuit which includes an infrared remote operated brightness control feature. The  idea was requested by Mr. Heeran Technical Specifications Can you please help me with two circuits. I want to build a backup  led emergency lamp that works via an infrared remote . I want it to […]

Filed Under: Lamps and Lights Tagged With: Controlled, Emergency, Infrared, IR, Lamp, LED

Password Lock Circuit Using IC 4017

Last Updated on January 5, 2022 by Swagatam 27 Comments

4017 based password lock circuit

In this post I will show how to construct a general purpose password based electronic lock circuit without any involvement of microcontroller. You can use this circuit for numerous applications where a basic level of security is required for turning a circuit ON. The proposed project is built using an IC 4017 and the circuit […]

Filed Under: Security and Alarm Tagged With: 4017, Lock, Password

Simple Vertical Axis Wind Turbine Generator Circuit

Last Updated on December 24, 2021 by Swagatam 8 Comments

In this post I have explained a simple vertical axis wind turbine generator circuit using ready made high power generator dynamo and a vertical axis wind turbine mechanism. The idea was requested by Mr. Taibani. Circuit Objectives and Requirements Hope you’re doing well. Firstly thanks for all the great knowledge & information you have given […]

Filed Under: Solar Controller Circuits Tagged With: Axis, Generator, Simple, Turbine, Vertical, Wind

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