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Newly Updated Circuit Projects:

Video Transmitter Circuit

Last Updated on June 17, 2023 by Swagatam 8 Comments

table 1

Mini black and white cameras are now available at a low cost. The proposed experimental setup allows wireless transmission of images from a CCD camera module. The entire system is completely autonomous, and numerous applications can be considered: video doorbell, monitoring of a child’s room, onboard video system, aerial photography (modeling), etc. The transmission is […]

Filed Under: Wireless Circuits Tagged With: Transmitter, Video

Electronic Candle Flame Simulator Circuit

Last Updated on June 8, 2026 by Swagatam Leave a Comment

electronic candle light simulator circuit

This electronic candle accurately imitates the flickering flame of a lit wick, but it remains considerably cleaner, doesn’t drip, and poses no risk of setting your interior on fire. It only requires a handful of ordinary components and is powered directly from the mains with minimal energy consumption. Its lifespan will be exceptionally long. How […]

Filed Under: Lamps and Lights Tagged With: Candle, Electronic, Flame, Simulator

220 V Slow Fade Bedside Lamp Circuit

Last Updated on June 8, 2026 by Swagatam 4 Comments

220V slow fade lamp circuit

The operating principle of this children’s night light is to gradually familiarize the child with darkness by gradually reducing the brightness of their bedside lamp. The room’s brightness will slowly fade away and completely extinguish after a duration ranging approximately between twenty minutes and 5 to 7 hours. This duration can be adjusted from week […]

Filed Under: Lamps and Lights Tagged With: 220, Bedside, Fade, Lamp, Slow

Sound Activated Remote Control Circuit

Last Updated on June 8, 2023 by Swagatam Leave a Comment

double sound operated ON OFF remote switch

This sound activated remote control circuit can be used to operate any electrical load ON/OFF, through a double sound command. Thus, the circuit ensures that the load cannot be operated through any random single sound triggers, which makes the circuit very fool proof. Our device will require two shifted sound commands. However, the second sound […]

Filed Under: Remote Control Circuits Tagged With: Activated, Control, Remote, Sound

High Voltage DC Motor Speed Regulator Circuit

Last Updated on June 30, 2026 by Swagatam 15 Comments

high voltage motor controller

In the realm of motor control systems, high voltage DC motors play a crucial role in numerous industrial and automotive applications. Efficiently controlling the speed of these motors while ensuring operator safety and isolating sensitive components can be a challenging task. However, with the advent of advanced technologies, such as optocoupler motor controller power stages, […]

Filed Under: Motor Controller Tagged With: DC, High, Motor, Regulator, Speed, Voltage

High Efficiency Solar Charger Circuits using Switching Regulators

Last Updated on July 5, 2025 by Swagatam 7 Comments

solar battery charger using 7805 switching regulator

Solar power or electricity from sun light is so abundant that we can afford to waste it or dissipate it in the form heat. This means that we can use large, high power solar panels to charge batteries with lower power without bothering about how much solar energy is being wasted and how much the […]

Filed Under: SMPS and Converters, Solar Controller Circuits Tagged With: Charger, Circuits, Efficiency, High, Solar, Switching

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