How BC547 Transistor work with Relay

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BC547 Transistor with Relay
COMPONENTS
#BC547 Transistor
#Relay
#1kResistor
#220 Ohm Resistor
#led
#connecting wire
Relay :
The relay is the device that open or closes the contacts to cause the operation of the other electric control to protects the system from damage.
BC 547 Transistor
The BC547 transistor is an NPN transistor. A transistor is nothing but the transfer of resistance which is used for amplifying the current. A small current of the base terminal of this transistor will control the large current of emitter and base terminals. The main function of this transistor is to amplify as well as switching purposes. The maximum gain current of this transistor is 800A.
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[@diahiraanggraini719]

BC547 Transistor work with Relay

[@karthickm8844]

Good work...

[@vkv5613]

good work.....

[@santapanrohani6710]

Thanks info

[@murugesans4545]

good....

[@YhudaDnGaming2020]

great

[@abdelkarimzeddouri7844]

Nice

[@akshithaelectronics5008]

5 volt relay module with bc 547 transister! Y

[@chethanajayasanka8059]

why use transsistor.u can do this without transsistor?

[@rajdeep1229]

Here, the transistor is used as a switch. Using this concept one can do different switching (Fan, bulb, heater, AC) activities by using a microcontroller.