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6 Useful DC Cell phone Charger Circuits Explained

Last Updated on May 17, 2026 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

220V AC to 56V DC SMPS Circuit for 48V Battery Charging

Last Updated on May 17, 2026 by Swagatam 2 Comments

In this article we will try to understand how to build a 220V AC to 48 V DC SMPS circuit for charging all types of 48V batteries, using the nice little IC IR2153. However, since 48V battery will require a 56V DC, so we will rather discuss a 220V to 56 V DC battery charger […]

Filed Under: Battery Charger Circuits, SMPS and Converters Tagged With: 220V, 48V, 56V, AC, DC, SMPS

Make this DC CDI Circuit for Motorcycles

Last Updated on May 16, 2026 by Swagatam 202 Comments

DC CDIdualchannel

The circuit presented here is for a DC-CDI which are used in motorcycles. A DC-CDI is the one in which the high voltage (200-400VDC) is converted from 12V supply voltage. Researched and Submitted by: Abu-Hafss Studying the circuit, we see that it has two parts i.e. the CDI unit, enclosed in the pink box and […]

Filed Under: Automobile Electronics Tagged With: CDI, DC, Motorcycles

Electronic 12V DC Capacitive Discharge Ignition (CDI) Circuits

Last Updated on May 16, 2026 by Swagatam 304 Comments

enhanced CDI

In the following post I have explained a simple yet enhanced 12V capacitive discharge ignition system which derives its operating voltage from the battery instead of the alternator for generating the igniting sparks. Since it works independently from the alternator voltage, without depending on a pickup coil signal, it is able to function more efficiently […]

Filed Under: Automobile Electronics Tagged With: 12V, Capacitive, DC, Discharge, Electronic, Ignition

High Voltage, High Current DC Regulator Circuit

Last Updated on May 16, 2026 by Swagatam 69 Comments

high voltage DC stabilizr circuit

We all are pretty familiar with the 78XX voltage regulator ICs or the adjustable types such as LM317, LM338 etc. Though these regulators are outstanding with their specified functioning and reliability, these regulators have one big disadvantage…. they won’t control anything above 35V. Circuit Operation The circuit presented in the following article introduces a DC […]

Filed Under: Automobile Electronics Tagged With: Current, DC, High, Regulator, Voltage

L298N DC Motor Driver Module Explained

Last Updated on May 14, 2026 by Swagatam 9 Comments

Webp.net compress image 3

In this post I have explained about L298N dual H-bridge DC motor driver module which can be used to drive brushed DC motors and stepper motors with microcontrollers and ICs. Overview Modular circuit boards are best time savior for electronics designers which also reduce the prototyping errors. This is mostly preferred by programmers who write […]

Filed Under: Arduino Projects, Motor Controller Tagged With: DC, Driver, Explained, L298N, Module, Motor

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