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Darkness Activated LED Circuit

Last updated on 5 July 2026 by Admin-Lavi Leave a Comment

This article explains about a Darkness Activated LED Circuit which is useful device that saves power, also it is energy efficient circuit because light glows only in darkness. The circuit automatically turns the light ON at night and OFF during the day, so we never need a manual switch for daily operation; also the circuit […]

Filed Under: Automation Circuits, LDR Circuits, LED and Lamps, Mini Projects, Sensors and Detectors, Transistor Circuits

Fan Start 10 Second Delay Timer Circuit

Last updated on 5 July 2026 by Admin-Lavi Leave a Comment

In many homes and industries sometimes a fan does not turn ON immediately, here, a fan start delay timer is a circuit that delays the fan start. When we apply power, the fan remains OFF for approximately 10 seconds and then turns ON automatically. Also, we can easily adjust the delay time if required. This […]

Filed Under: Automation Circuits, Hobby Circuits, Security and Protection, Timer Circuits, Transistor Circuits

30 Minute Delay Timer Circuit using Transistors

Last updated on 5 July 2026 by Admin-Lavi Leave a Comment

This article explains about a simple 30-minute delay timer circuit that uses transistors, the circuit offers a low-cost, easy-to-build solution. Also, it uses common parts like BC547 transistors, resistor and capacitor and because of simple design, beginners can also understand it easily. Therefore, this 30 Minute Delay Timer Circuit using Transistors is useful for applications […]

Filed Under: Automation Circuits, Mini Projects, Timer Circuits, Transistor Circuits

Transistor Based Coin Toss Game Circuit

Last updated on 5 July 2026 by Admin-Lavi Leave a Comment

Sometimes we need to make a quick decision but choosing is not easy, so we flip a coin; now imagine doing the same with electronics. This transistor-based coin toss game circuit works like a real coin toss and produces a random result every time, and when we apply power to the circuit, no one can […]

Filed Under: Hobby Circuits, Indicator Circuits, LED and Lamps, Transistor Circuits

Automatic Solar LED Light Circuit

Last updated on 5 July 2026 by Admin-Lavi Leave a Comment

Solar power is free energy and it comes from the sun, it is clean and is renewable, because of this solar lights are very popular today; also this is Automatic Solar LED Light Circuit and it turns ON light at night, and it turns OFF light at day automatically. This circuit requires no switch, making […]

Filed Under: Automation Circuits, Battery Charger Circuits, DIY Projects, LED and Lamps, Power Supply Circuits, Renewable energy, Solar Circuits

Transistor Based LED Chasing Flashing Circuit

Last updated on 5 July 2026 by Admin-Lavi Leave a Comment

Building a transistor-based LED chasing flashing circuit is a simple and interesting project, as this circuit switches LEDs ON and OFF sequentially to create a chasing effect, which gives it the name “chaser circuit This circuit uses simple transistors instead of ICs, making it easy for beginners to learn, it is suitable for learning and […]

Filed Under: DIY Projects, LED and Lamps, Transistor Circuits

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