Power Supply Circuits

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 […]

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 […]

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 […]

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 […]

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) […]

If we have 1.5V AA battery but gadget need 10V to work. Then this 1.5V To 10V Boost Converter Circuit is small power maker. It changes 1.5V weak power to strong 10V. This circuit is useful for devices which need more power than what battery gives. Circuit Working: Parts List: Category Component Quantity Resistors (All […]