all lectures ELECTRICAL Video

How to repair your 950watt tiger generator (i pass my neighbour) pt2

It is infact needless to say that this “young man “(small generator), since its introduction to Nigeria years back has been the most used and will continue to be the most popular generator in this country. For reasons  being that; It conserves the expensive fuel. It is relatively  easy to fix. Its spare parts are […]

all lectures ELECTRICAL Video

How to repair your 950watt tiger generator (i pass my neighbour)

It is infact needless to say that this “young man “(small generator), since its introduction to Nigeria years back has been the most used and will continue to be the most popular generator in this country. For reasons  being that; It conserves the expensive fuel. It is relatively  easy to fix. Its spare parts are […]

all lectures ELECTRICAL

10 Minute timer circuit.

Description. When ever you need to get an alarm or intimation after ten minutes ,the circuit shown below can be used.The circuit is nothing but  a monostable multivibrator based on IC NE 555.When ever you press the reset push button the green LED D1 glows after 10 minutes. Circuit diagram with Parts list. Notes. Assemble […]

all lectures COMPUTER/INTERNET ELECTRICAL

What is wireless charging? How does it work?

What is wireless charging? Wireless charging is the process of charging a device wirelessly without the hassle of plugging it into a power socket in the wall, a power bank or another power source. In wireless charging, the electric charge is transferred from the charging device to the device being charged without any wired connection. […]

all lectures ELECTRICAL

Home Automation: What Is It and How It Works?

What is Home Automation? Home automation is the system that allows communication from one device to another to make certain changes or even allow control through another device. A few years back, home automation sounded like an overrated venture and cost a substantial amount of money. However, as years go by, technology has gotten more […]

all lectures education ELECTRICAL Physics

Simple DC power delay circuit

Description. The circuit diagram shown here is of a simple DC power delay circuit that is based on an SCR. This circuit is a very handy one and can be employed in many applications. The working of this circuit is very simple. When the input power is applied the capacitor C2 charges through resistor R2 […]

all lectures ELECTRICAL Physics

LED Scrolling Display Board Circuit Using AVR Microcontroller

LED Scrolling Display Board This article explains the steps involved in designing a scrolling message LED Display. The following features of the display are explained in the article. Framing Alpha-Numeric characters and special characters Multiplexing the matrices Serial mode of data distribution using shift registers Static text display Scrolling text display Mode selection between static […]

all lectures ELECTRICAL

How to build Fire alarm using thermistor & NE555

Description Many fire alarm circuits are presented here,but this time a new circuit using a thermistor and a timer to do the trick. The circuit is as simple and straight forward so that, it can be easily implemented. The thermistor offers a low resistance at high temperature and high resistance at low temperature. This phenomenon […]