Wind Mobile Charger: Working Principle, Resistors, Equipments required, Soldering and how to Solder, Circuit description, Capacitor, Ceramic and Electrolytic Capacitor, Variable Resistor

This charger is a very small hand-held windmill which starts operating when a draft of wind, induced either by blowing wend or when traveling in a vehicle, starts charging a mobile phone. It can also be used to charge laptops. The charger costs Rs. 85.

You’ve probably seen mobile phone chargers that can power multiple devices at once and sync data between your phone and a PC. You may have even heard some rumblings about wireless chargers that power devices over the air or solar-powered cell phones. But how about a wind-powered cell phone charger?

Mobile wind charger has a mini turbine that latches on to the top of a tent and stores power in a separate “control box” that users, can plug inter-when their mobiles need juice.

In an environment with consistent 12 m-ph winds, it would take roughly 24 hours to charge an average cell phone, according to Ben Jandrell, the founder of Gotwind.

The charger was designed for use in outdoor settings, like the Glastonbury Festival, to provide environmentally friendly energy for cell phone users and others who may want to stay connected but don’t have access to electrical outlets, according to orange.

The smaller the blades on a turbine the longer it takes to generate power.


The main principle for the waking of wind mobile charger is that if we pass any conducting material through the magnetic flux then the current is generated and this current is proportional to speed of the conducting material. Therefore, when the blade of charger will be moving by the wind then the winding will also move. This winding is a copper winding in which copper wire is wounded over a magnet. Because of this the current will be generated at the input point CD. By using this current and by using the motor controller IC we get some voltage & current at the output end. This obtained voltage and current is sufficient to charge any mobile phone.

Click here to view the diagram of Wind Mobile Charger


The circuit of wind mobile charger is very simple. In the circuit there is IC BA6220 that is motor controller IC. We used three resistors R1, R2, R3 has the value respectively 270,100,100. A capacitor CI has the value 10 of 16 V.

First, second, third & seventh, sixth pin is short circuited & connected to input ‘A’. The R2 & R3 in series & one terminal is connected pin 4and other is connected to R2. Capacitor “C” & inductor “L” is used for filtering. Pin 8 is connected to variable resistor R3. The output is given by pin 8 at C & terminal D.


Resistors are the electronic components used to control the current passing through the circuit. They are calibrated in ohms. In other work resistance are circuit elements having the function of introducing electrical resistance into the circuit.

There are three basic types of resistors:

1)     Fixed resistor

2)     Rheostat

3)     Potentiometer


A capacitor essentially consists of two conducting surface separating by a layer of an insulating medium called dielectric. the conducting surface may be in the form of either circular or rectangular plates or be of spherical or cylindrical shape. The purpose of a capacitor is store the electrical energy by electrostatic stress in the dielectric (the word condenser is a misnomer since a capacitor does not condense electric as such it merely stores it). The property of a capacitor to store electricity may be called its capacitors.


A capacitor is no named because of ceramic dielectrics. One type of the ceramic capacitor uses a hollow ceramic cylinder as both the form on which to construct the capacitor and the dielectric material the plates consists of thin films of metal deposited on the ceramic cylinder. A second type of ceramic capacitor is manufactured in the shape of a disc.


Electrolytic capacitors are polarized and they must be connected the correct way round, at least one of their leads will be marked + or -. They are not damaged by heat when soldering.


Variable resistors consist of a resistance track with connections at both ends and a wiper which moves along the track as you turn the spindle. The track may be made from carbon, cermet (ceramic and metal mixture) or a coil of wire (for low resistances). The track is usually rotary but straight track versions, usually called sliders are also available.


The following tools and equipments are required for construction of this project is given below:

1)     Soldering Kit

  1. Soldering iron
  2. Soldering wire
  3. Flux

2)     Combination pliers

3)     Tweezers

4)     Long nose pliers

5)     Penknife


Soldering is the process of joining two metallic conductors.


Good soldering practices are very important for assembling for any electronic circuit. Given below are some important steps to be followed in good and correct soldering practice:

1)     Use of correct type of soldering iron and solder and avoid the use of excessive flux.

2)     Keep the soldering iron hot during the working period and let it rest on its stand when not in use.

3)     All components leads and wires should be thoroughly cleaned to remove dust and rust before soldering.

4)     Enough heat is applied to the joint so that the solder metal flows freely over the joint.


1)     No power source is required.

1)     By winding charger at 2.5 rotations per second for a total of 3 minutes you will gain up to 8 minutes talk time.

2)     Fast rotation will not increase charging capacity.


1)     It takes more time to charge than the electric charger.

2)     Variation in the speed of the wind can change the charging time.


1)     The quality of soldering of component on PCB should be good quality.

2)     The component fitted on the PCB should be loosely fitted.

3)     Use 25W pencil bit soldering iron only.

4)     The solder metal has 60-40 and for all soldering. A good solder joint have always shining bead like appearance.


1)     It is used for emerging light’s.

2)     It can also be used charging the lap-top.


The conclusion we get from this is that from every aspect this project in “WIND MOBILE CHARGER” is technically feasible and commercially it is useful, valuable and economical.

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