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Power Supply Circuits

5V 0.5A Regulated Power Supply Circuit

Last updated on 23 January 2026 by Admin-Lavi Leave a Comment

Power supply is the heart of any electronic circuit, without stable voltage the circuit will fail. Sometimes 7805 IC is not enough and also sometimes current requirement is higher. Therefore, discrete regulator is useful. This 5V 0.5A Regulated Power Supply Circuit gives 5V output at 0.5A current. It uses TIP3055 transistor and IC TL431 reference. […]

Filed Under: Power Supply Circuits

Transistor Based 5V Linear Power Supply Circuit

Last updated on 22 January 2026 by Admin-Lavi Leave a Comment

Power supply is very important in electronics and most electronic circuits need stable DC voltage. However, AC voltage comes from mains and therefore the conversion is required. This Transistor Based 5V Linear Power Supply Circuit gives regulated 5 volts DC. It uses simple components, gives high current and is useful for labs and projects. Circuit […]

Filed Under: Power Supply Circuits, Transistor Circuits

5V Regulated Power Supply Circuit using Transistors

Last updated on 22 January 2026 by Admin-Lavi Leave a Comment

A 5V regulated power supply is very important in electronics as it is used to run many digital circuits, for example, microcontrollers, sensors and logic ICs. This 5V Regulated Power Supply Circuit using Transistors gives stable 5 volts DC output. It uses transistors for voltage regulation and so it can handle more current than IC […]

Filed Under: Power Supply Circuits, Transistor Circuits

220V AC Live Detection and Interface Circuit

Last updated on 21 January 2026 by Admin-Lavi Leave a Comment

Handling 220V AC directly is very dangerous, but still we need to know mains is ON or OFF. So, this 220V AC Live Detection and Interface Circuit is useful as it solves this safety problem easily. This circuit senses mains voltage safely and it sends clean logic level signal. Optocoupler is used for isolation, so […]

Filed Under: Power Supply Circuits, Sensors and Detectors

Transformer Based 12V DC 3A Power Supply Circuit

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

Need a strong 12V DC supply for our electronics projects? A stable and powerful DC supply is the heart of any electronics project. This Transformer Based 12V DC 3A Power Supply Circuit delivers clean and reliable power. It converts AC mains into smooth DC power and it provides high current with low noise output. It […]

Filed Under: Power Supply Circuits

Regulated 9V Power Supply Circuit using IC 7809

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

In many electronic projects, we need clean and fixed voltage for proper working. This Regulated 9V Power Supply Circuit using IC 7809, it takes higher DC voltage and gives stable 9V output. IC 7809 is easy to use and gives safe, constant voltage. This power supply is very useful for small electronic circuits and beginner […]

Filed Under: Power Supply Circuits

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