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New Circuit Projects

Homemade 2000 VA Power Inverter Circuit

Last Updated on November 16, 2024 by Swagatam 32 Comments

2000VAInverterCircuit

Making a power inverter circuit rated above 2000 VA is always difficult, mainly because of the involved transformer dimension which becomes quite huge, unmanageable and difficult to configure correctly. Introduction Power inverters in the range of KVA, requires huge current transferring capabilities for implementing the required operations as per the desired specs of the unit. Transformer being the main power […]

Filed Under: Inverter Circuits Tagged With: 2000, Homemade, Inverter, Power, VA

5 Easy 1 Watt LED Driver Circuits

Last Updated on June 18, 2022 by Swagatam 154 Comments

12Bwatt2Bled2Bdriver2Bcircuit

In this post I have explained about a few easy to build, compact 1 watt LED bulb circuits. The first circuit is SMPS based, the second design uses a capacitive power supply, while the remaining concepts show how to used a DC source to illuminate a 1 watt LED. Warning: Many of the circuits I […]

Filed Under: Lamps and Lights Tagged With: Circuits, Driver, Easy, LED, Watt

IC 7805, 7812, 7824 Pinout Connection Explained

Last Updated on October 16, 2022 by Swagatam 40 Comments

78XX voltage regulator range of ICs

In this post I have explained how to connect common 78XX voltage regulator ICs such as 7805, 7812, 7824 etc for getting fixed regulated output voltages at 5 V, 12 V, or 24 V outputs respectively. The input voltage must be at least 3 V higher than the desired output voltage. For example, if a […]

Filed Under: Power Supply Circuits Tagged With: 7805, 7812, 7824, Connection, Explained, Pinout

How to Make a Digital Voltmeter, Ammeter Module Circuits

Last Updated on July 8, 2019 by Swagatam 29 Comments

2

In this article I have explained how to build a digital voltmeter and a digital ammeter combined circuit module for measuring DC volts and current through different ranges, digitally. Introduction Electrical parameters like voltage and current are inherently associated with electronics and with electronic engineers. Any electronic circuit would be just incomplete without appropriate supply […]

Filed Under: Meters and Testers Tagged With: Ammeter, Circuits, Digital, Module, Voltmeter

6 Useful DC Cell phone Charger Circuits Explained

Last Updated on December 26, 2020 by Swagatam 299 Comments

DCcellphonechargercircuit

A DC cell phone or mobile phone charger is a device which charges a cellphone from an available DC supply source. The device converts the unregulated DC source into a constant current and constant voltage output which becomes safe for any mobile phone charging. In this article I have explained how to build DC to […]

Filed Under: Battery Charger Circuits Tagged With: Cell, Charger, Circuits, DC, Phone, Useful

Simple 12V, 1A SMPS Circuit

Last Updated on September 22, 2023 by Swagatam 227 Comments

12v 1 amp smps circuit

In the following content I have explained two simple 12V, 1 Amp switch mode power supply (SMPS) circuit using the very reliable VIPerXX IC from ST microelectronics. With the advent of modern ICs and circuits, the age old iron transformer type of power supply are surely becoming obsolete. Today power supplies are much compact, smaller […]

Filed Under: Power Supply Circuits Tagged With: 12V, Simple, SMPS

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