When we provide enough current across this coil, it became energized and pulls an arm. Mechanical relays use temporary magnet made from electromagnetic coil. 5V Adapter or any 5V power source with at least 200mA current capabilities.A led will notify the relay ON or OFF condition. To control the relay we will use BC547 NPN transistor and the transistor will be controlled from the PIC16F877A.We will Interface a switch for input from user.In this project we will do the following things. In this project we will use mechanical relay. From mechanical to Solid state relays, there are various type of relays are available in electronics. Relay provides isolation between two voltage levels and it is generally use to control AC appliances. Relay is a mechanical device to control high voltage, high current appliances ‘ ON’ or ‘ OFF’ from lower voltage levels. In this project we will interface a Relay with PIC Microcontroller PIC16F877A.
#Bringing up switch board for pic16f877a on proteus 8 pdf
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