How to Build an Blower
Therein project, we are going to build a battery-operated, handheld lover, such as one and only shown higher up, which is rough-cut to see inside of a discount store operating theatre supermarket.
This buff, similar any former, blows so that a person can keep him or herself precooled in hot weather.
This type of fan is really rattling prosperous to build, only requiring a few parts.
To build this type of fan, the components requisite are:
Parts
- 3V DC Motor
- Impressible Propeller
- 2 'Associate in Arts' Batteries
- Battery Holder (optional)
The first disunite which we need is an electric DC motor. A Direct current motor spins when it is Federal Reserve sufficient Direct current potential difference. The reason we must use a DC motor, not an Atomic number 89, is because we are powering the motor through batteries. Batteries supply DC voltage. Therefore, we must use a D.C. motive. And not lone do we need is a DC motor but we need it to live a 3V DC motor. This is a DC motor which is powered past 3 volts. The reason why we need IT a 3V efferent is because we are going to use 2 'AA' batteries to power the causative. 2 'AA' batteries, in series, supplies 3 volts, since each battery supplies 1.5 volts each. If we chose a drive that needed more potential difference, the 2 'Associate in Arts' batteries would not be able to supply sufficient voltage to power it. For object lesson, if we chose a 6V DC motor, 2 'AA' batteries, supplying 3 volts, is obviously non plenty. In that type, we would need 4 'Associate in Arts' batteries to might the efferent. We don't want to purpose overly many batteries when designing an electronic product. We require the design to be as efficient as possible, therefore, we would IT ideally to atomic number 4 of low power. The glower the exponent needed, the less batteries are needed to power it. Therefore, a user testament be happier with this than if they needed a bunch of batteries.
The next part which we need is a plastic propeller.
This is a plastic unit which goes finished the shaft of the DC motor. When the motor receives sufficient major power, it will whirl. When the plastic propellor is attached to the shaft, information technology spins, since it's attached to the cheat. In turn, the propeller moves air and blows air into the expression of the user, who of necessity to represent cooled from the hot weather.
Impressionable propellers can constitute obtained from Allelectronics- Plastic Propeller.
The last section which is needed are the 2 'AA' (double A) batteries. Each shelling supplies 1.5 volts. When settled asynchronous, in total, they provision 3 volts. This is the amount of potential difference needful to business leader a 3VDC motor. This is necessary to power the DC motor, so that its spear throne spin, which in turns spins the impressible propeller.
Complete Electric Fan Electrical circuit
When we put the complete circuit put together, it will aspect something like the circuit below:
This circuit now Acts as a fan. The batteries supply D.C. voltage to the D.C. motor, which powers information technology. Since the motor is now receiving sufficient business leader, its shaft will spin. This leave tailspin the impressible propeller engaged to the shaft.'
It's a very basic circuit. This is how handheld fans shape. To give it an on-off push button, then you would just attach a switch from the batteries to the motor. This would allow a user to swap it on, then unsatisfactory when not in use.
Circuit With a Spinning Motor and a Fan With a Switch
Source: http://www.learningaboutelectronics.com/Articles/How-to-build-an-electric-fan.php