Set Theory

Set Theory

        A Set is a collection of objects, things, or states. The Objects may be numbers, letters, days of the week, or in fact, anything under discussion. One way of describing a set is to list the whole collection of members or elements and enclose them in braces { }.

               Ex: A.{1, 0} the set of binary digits, one and zero

                      B.{off, on} the set of possible states of a two-state system

Logic Gate

The Logic Gate

        There is a lot of different type of logic gate. The most well-known gate is OR gate, AND gate and NOT gate. But there are more than just three. Well, there are many more if you combine them together they will form a new Gate with a new function. These are all the gate symbol.

Project Relay 4

Controlling Motor through 4 Relay with 3 button

Forward, Reverse and Stop

       In this project, we will be making a motor control relay which has three button consist of Forward Button, Reverse Button and Stop Button. This relay can control any DC motor whether you want it to go forward or Reverse or even stop you can do it simultaneously. The Circuit is Simple and Easy to understand if you have followed me on the previous projects. So Using Relay to Control DC motor with 3 Button Forward, Reverse and Stop, Start now.

Project Relay 3

Using Two-button and Two Relay to Light bulb on/off

        In this project, we are using two-button which is the N.O button and N.C button to turn the light bulb which uses 220v on/off. The special thing about this project is that we could just push the N.O button once and the light will always be on no matter what we do even if we release our hand from the button. So when we press the N.C button (In my case we don't have the N.C button so we use jumper instead) the power will be cut off from the light so the bulb will turn off.

Project Relay 2

Using Micro-Controller to control Bulb through Relay

     This Project we are going to use Micro-Controller to turn on/off the bulb through Relay. Through Relay we use Micro Controller as a signal transmitter to give a signal to the relay to turn on and off relay through that we able to turn on and off the 220v bulb. In this project, Micro-Controller gives a signal to the Transistor (2n2222 or BC547) to turn on/off the relay. So the Schematic isn't so different from the last project that we do.

Project Relay 1

Using Relay to Control 220v Bulb that have Battery

     
      This project is using a relay to control a light bulb with 220v that is equipped with a Battery. We're using 220v to light the light bulb when we need to just like in the picture on the right. So we using switch to turn on and off so when we want to turn off the light. Instead of using it directly we use a relay as another switch to control the light.