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Archives for 2014

Multiple Appliances Remote Control Circuit

Last Updated on November 26, 2023 by Swagatam 82 Comments

remote pressing

In this post I have explained a simple IR remote control circuit which can be used for controlling many appliances independently through a single transmitter handset. The idea employs ordinary components like IC LM567, IC 555 and does not incorporate microcontroller devices. The idea was requested by Mr. Saeed Abu and also other dedicated readers […]

Filed Under: Remote Control Circuits Tagged With: Appliances, Control, Multiple, Remote

Office Call Bell Network Circuit with LED Monitor

Last Updated on November 15, 2023 by Swagatam 2 Comments

officeroombellnetwork

In this post I have explained an office call bell network circuit for office complexes which could be used for calling and monitoring office member’s attendance and response from the particular intended office chamber. The idea was requested by Mr. Rajib Banerjee Technical Specifications Need a perfect useable circuit idea for Ringing the Bell as […]

Filed Under: Security and Alarm Tagged With: Bell, Call, LED, Monitor, Network, Office

0 to 50V, 0 to 10amp Variable Dual Power Supply Circuit

Last Updated on September 8, 2023 by Swagatam 284 Comments

In this post I have explained a simple yet very useful 0 to 50V dual power supply circuit which will enable a full 0 to maximum dual voltage +/- control of the input power supply DC. It also includes a wide range current control feature right from 0 to 10 amps. The idea was requested […]

Filed Under: Power Supply Circuits Tagged With: 10amp, 50V, Dual, Power, Supply, Variable

How to Make a Powerful RF Signal Jammer Circuit

Last Updated on May 7, 2023 by Swagatam 140 Comments

RFsignaljammercircuit

The post describes a simple homemade RF signal jammer circuit that can be used for jamming any RF signal within a radial range of 10 meters. The idea was requested by one of the interested readers of this blog. Technical Specifications I am not a large business interest, but am in need of a circuit […]

Filed Under: Remote Control Circuits Tagged With: Jammer, Powerful, RF, Signal

LED PWM Controlled Tubelight Circuit

Last Updated on December 22, 2022 by Swagatam 55 Comments

LED pwm control circuit

In this post I have explained a 555 based PWM circuit which can be implemented as a 150 nos or more LED light intensity controller circuit. The idea was requested by Mr. Anil The Circuit  Request I want to run 150 nos LEDs of 5mm with help of IC 555 on Pulse & continuous mode. […]

Filed Under: Lamps and Lights Tagged With: Controlled, LED, PWM, Tubelight

Thunder Lightning Detector Circuit – LED Blinking in Response to Thunder

Last Updated on December 7, 2022 by Swagatam 43 Comments

This simple circuit will enable you to visualize distant thunder lightning through a correspondingly choreographed LED flashes, exactly in accordance with the lightning that may be taking place somewhere in the distant sky, the response will be simultaneous and thus much prior to the sound that may reach your ears after a few seconds. RF […]

Filed Under: Sensors and Detectors Tagged With: Blinking, Detector, LED, Lightning, Response, Thunder

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