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12V to 5V Buck Converter Circuit using Transistors

Last updated on 26 January 2026 by Admin-Lavi Leave a Comment

In todays world power supply plays a very important role, because most electronics need stable 5V DC. But sometimes if the input voltage is high like for example 12V battery or adapter, then we must reduce voltage safely. Therefore, a buck converter is useful, as it reduces voltage with high efficiency. This 12V to 5V […]

Filed Under: Power Supply Circuits, Transistor Circuits

IC 7805 12V To 5V 2A Boost Converter Circuit

Last updated on 25 January 2026 by Admin-Lavi Leave a Comment

Sometimes 7805 regulator is not enough, as it gives only around 1 amp current. However, many projects need more current for example motors, relays, LED strips and logic boards together. Therefore, we need a simple solution, so we used an external power transistor TIP42 with 7805 IC. This transistor boosts output current with this the […]

Filed Under: Power Supply Circuits

IC LM309 Based 5 Volt Power Supply Circuit

Last updated on 24 January 2026 by Admin-Lavi Leave a Comment

Today many electronic circuits need stable 5 volt DC supply. However, AC mains supply is very high, so voltage reduction is also required. Also voltage regulation is important and therefore a voltage regulator circuit is used. In this article, a simple IC LM309 Based 5 Volt Power Supply Circuit is explained. Moreover, the circuit is […]

Filed Under: 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

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