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Power Supply Circuits

5V 3A Linear Power Supply Circuit

Last updated on 11 December 2025 by Admin-Lavi Leave a Comment

This 5V 3A Linear Power Supply Circuit is very simple for one to give it a try. It uses only LM323K IC and few more parts which are easily available. It gives 5V fixed output and can handle load up to 3A. Circuit Working: Parts List: Component Specification Quantity Capacitors Electrolytic 4700uF 25V, 470uF 25V […]

Filed Under: Power Supply Circuits

7812 Based 12 Volt DC Power Supply Circuit

Last updated on 2 December 2025 by Admin-Lavi Leave a Comment

Many electronic projects need 12V clean power for output devices like LCD, graphic LCD and DC motors. A simple AC to DC converter using 7812 regulator. It provides fixed 12V for small devices and general use. Big 100uF capacitor remove big AC ripple from rectified DC. Small 0.1uF capacitor remove small ripple from regulated output. […]

Filed Under: Power Supply Circuits

Voltage Vs Current Explained Simply

Last updated on 24 October 2025 by Admin-Lavi Leave a Comment

Electricity works because of voltage and current. Both are basic parts of any electric circuit. Voltage gives energy. Current shows how much charge is flowing. They are related but not the same. Let us understand both in simple words. What is Voltage? Voltage is the electric force or pressure. It pushes electrons to move in […]

Filed Under: Power Supply Circuits, Tutorials

Smart Energy Meter Circuit with Arduino UNO

Last updated on 28 September 2025 by Admin-Lavi Leave a Comment

Electric bill increasing day by day. So we need smart way to measure power use. Here is a simple project using Arduino UNO, ACS712 current sensor and 16×2 LCD with I2C. It shows real time current, voltage and power. This project for Smart Energy Meter Circuit with Arduino UNO help to monitor load and save […]

Filed Under: Arduino Projects, Meters and Testers, Power Supply Circuits, Sensors and Detectors

Slow Voltage Rise Power Supply Circuit

Last updated on 22 August 2025 by Admin-Lavi Leave a Comment

Sometimes when our circuit power is ON a big current comes suddenly. This sudden current can damage parts like IC, capacitor and transistor. To stop this we make Slow Voltage Rise Power Supply Circuit. This circuit gives voltage slowly but not full at once. So circuit become safe and work is quite reliable. Circuit Working: […]

Filed Under: Power Supply Circuits

High Current Adjustable Regulator Circuit with 30V 3A Output

Last updated on 12 August 2025 by Admin-Lavi Leave a Comment

In this article IC LM723 chip controls the voltage. It give stable DC output, voltage and current adjustable. Output voltage range is 2V to 37V and up to 150mA and input is max 40V. High Current Adjustable Regulator Circuit with 30V 3A Output is good for lab supply and projects. With extra pass transistor it […]

Filed Under: Power Supply Circuits

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