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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

How Switch Mode Power Supply (SMPS) Circuits Work

Last Updated on January 8, 2024 by Swagatam 58 Comments

10WSMPSCircuitUsingSTMicroelectronicsVIPer22

SMPS is the acronym of the word Switch Mode Power Supply. The name clearly suggests that the concept has something or entirely to do with pulses or switching of the employed devices. I have explained how SMPS adapters work for converting mains voltage to a lower DC voltage. Advantage of SMPS Topology In SMPS adapters […]

Filed Under: Power Supply Circuits Tagged With: Circuits, Mode, Power, SMPS, Supply, Switch

Motor Protection Circuits – Over Voltage, Over Heat, Over Current

Last Updated on December 28, 2023 by Swagatam 25 Comments

DCMotorOverUnderVoltageProtectorCircuit

In this post I have explained a few DC motor protection circuit from harmful conditions like over voltage and under voltage situations, over current, overload etc.. DC motor failures are commonly experienced by many of the users, especially in places where the relevant motor is run for many hours a day. Replacing motor parts or […]

Filed Under: Motor Controller Tagged With: Circuits, Heat, Motor, Over, Protection, Voltage

How to Get Free Energy from Alternator and Battery

Last Updated on June 15, 2019 by Swagatam 38 Comments

bifilarcoilcircuit

A request was sent to me by one of the readers Mr. Edward Pizzo, regarding solving a circuit issue. The idea refers to a very interesting concept of acquiring free energy through a mechanism which once initiated keeps running  in quite a perpetual fashion. Using an Alternator and two Batteries A charged battery #1 is used initially for […]

Filed Under: Free Energy Tagged With: Alternator, Battery, Energy, Free

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