DoElect

We all know what an electric fan is and know well that it works a capacitor but might be wondering how necessary it is to have capacitor along with a fan to get it work. Honestly, it get me nervous if I have to look at the fan working but don't really know why capacitor must be used along with a fan to get it work so I decide to remove the capacitor from my ceiling fan and see if the fan will work but unfortunately for me, the fan didn't work instead just making a hum. I discover that I have to rotate it with my hand to get it rolling/working. It sounds funny though but quite important for a typical electrical engineer student or workers to know the secret behind the usage of capacitor in the ceiling fan system. What is a FAN? An electric fan runs on AC power supply using capacitor as a means of starting device to kick-start the actual rotation of the fan. Now, lets observe the electrical operation of a fan. A fan is an asynchronous electric induction motor and...

As session begins in most Nigerian university, polytechnics and colleges of education. It is thus advisable for students to keep there self updated and alert for urgent tests and exam as might be decided by the lecturer. UNESCO in a brief UNESCO is responsible for coordinating international cooperation in education, science, culture and communication. It strengthens the ties between nations and societies, and mobilizes the wider public so that each child and citizen: • has access to quality education; a basic human right and an indispensable prerequisite for sustainable development; • may grow and live in a cultural environment rich in diversity and dialogue, where heritage serves as a bridge between generations and peoples; • can fully benefit from scientific advances; • and can enjoy full freedom of expression; the basis of democracy, development and human dignity. UNESCO's messages are of increasing importance today, in a globalized world where i...

  UPS INVERTER Inverters and UPS are used to support power supplies when there is power outage either from the Supply Authority or Generator House. Typically, A UPS is a device that helps in keeping an electrical system for some minutes whenever there is power failure. It makes use of battery which helps to continue power when there is power outage. While an inverter is an electronic gadgets which is used to supply power by converting the direct current of a battery into alternating current. The major difference however between this two device is that, Inverter is not able to provide any supply but through DC source only. 1. *  In Inverter ,AC is converted into DC and then is used to charge the battery. When the power supply goes off, the relay triggers the switch from mains to inverter. It is the use of a sensor and a relay that is the main difference between a UPS and an inverter, otherwise the two are same. And the use of relay and sensor ...

Unlock your Smart Device Sometimes, we forget the password to our android device and as a result we get locked out of our smartphone which will be frustrating. Actually, there are several ways of doing it such as; The use of software's, phone manipulation or wiping off of phone data.   This DIY tutorial is aimed at helping us out whenever this kind of awful instance occurs. However, this is used for educational purpose and it should by no means be used to harm other humans. Enough with the talking, lets get on the go; For Samsung user { although can work on some other Android device also} so, this is the phone in question, it has been locked using the usual convention "Phone Pattern" 1. Power the phone off 2. Power it ON again but this time by holding the UP "volume button" then, press and hold the power button It will pop-up a screen like this Then, press the menu key ...