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Power Supply Circuits

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3V to 9V Dual Power Supply Circuit

Last updated on 23 July 2025 by Admin-Lavi Leave a Comment

IC 555 is used in easy circuit. Make both plus and minus voltage from one 3V source like two AA battery. It is useful for 3V to 9V Dual Power Supply Circuit. 555 work as astable multivibrator in circuit. It make square wave again and again on output pin 3. Outside resistors and capacitors control […]

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Simple Voltage Follower Circuit using Op-amp IC 741

Last updated on 23 July 2025 by Admin-Lavi Leave a Comment

Simple Voltage Follower Circuit using Op-amp IC 741 give output same like input. It is also called buffer amplifier or unity gain amplifier. IC 741 op-amp is cheap and useful that is why so many people use it. Voltage follower has high input impedance and with low output impedance. It can give current to many […]

Filed Under: Power Supply Circuits

How to Build a Mini Tesla Coil Circuit

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

In this post for How to Build a Mini Tesla Coil Circuit these tesla coil make high voltage and low current. Mini Tesla coil is small version of big one. It can light small things or make tiny sparks. It runs on 9V battery or other low power. Circuit Working: Parts List: Category Item Quantity […]

Filed Under: Power Supply Circuits

Simple Buck Converter Circuit for Converting 12V to 3V

Last updated on 18 July 2025 by Admin-Lavi Leave a Comment

Simple Buck Converter Circuit for Converting 12V to 3V also called step-down converter is common in electronics. It takes high DC voltage and makes it lower, like a valve but for voltage. This type of circuits are used in phones and laptops to change 12V battery to lower voltage like 3V for small parts. Circuit […]

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How to Convert 5V to 3.3V Circuit

Last updated on 17 July 2025 by Admin-Lavi Leave a Comment

Have anyone tried using a toy which needs 3.3V but charger gives only 5V? That too much power! This article for How to Convert 5V to 3.3V Circuit is like small helper. It take strong 5V and make it weak 3.3V which is right for device. This help when USB or charger give more power […]

Filed Under: Power Supply Circuits

Simple Boost Converter Circuit from 3V to 5V

Last updated on 17 July 2025 by Admin-Lavi Leave a Comment

To change 3V to 5V we need to use a boost converter. This Simple Boost Converter Circuit from 3V to 5V take low voltage and make it higher. It takes 3V from battery and give 5V to run our devices. Circuit Working: Parts List: Category Component Quantity Resistors (All resistors are 1/4 watt unless specified) […]

Filed Under: Power Supply Circuits

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