Download - Base and collector current
![Page 1: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/1.jpg)
FSNSYou only learn by doing it yourself
From Scrap and Scratch
![Page 2: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/2.jpg)
Experiment 1
Difference between Base and Collector Current of a Transistor
![Page 3: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/3.jpg)
Materials Required
i. Bread Board
ii. Resistor: 330 to 1000 ohm -2
iii. 9V Transistor Battery
iv. Connecting Wire
v. NPN transistor
vi. LED - 2
![Page 4: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/4.jpg)
Step No. 1
Take a Breadboard
![Page 5: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/5.jpg)
Step No.2
Connect a 9V Battery on the Breadboard
![Page 6: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/6.jpg)
Step No.3
Connect a NPN transistor on the breadboard with its 3 pins( emitter base and collector) in 3 different holes on the
breadboard
![Page 7: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/7.jpg)
Step No.4
Connect the emitter to the ground (Negative Terminal)
![Page 8: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/8.jpg)
Step No.5
Take two resistors and connect their one terminal to the Vcc (Positive terminal of the battery) and other terminal at two
different holes in the breadboard
![Page 9: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/9.jpg)
Step No.6
Connect a LED between one resistor and base of transistor (middle pin). Take care in connecting positive terminal to resistor. The LED will glow but with very less brightness
![Page 10: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/10.jpg)
Step No.7
Connect another LED between collector and the other resistor. The LED will glow more brightly than the previous one. Compare the two brightness.
![Page 11: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/11.jpg)
Reasoning
The two LEDs glow differently because different currents are flowing across them. In a transistor, the collector current is normally 100 times the base current.
This property of transistor is extensively used and is very important while studying transistor as amplifier
Note: Here we are assuming that Beta = 100 for this transistor. What is “Beta” is not important at this level.
![Page 12: Base and collector current](https://reader036.vdocuments.us/reader036/viewer/2022062513/556104c0d8b42a0e408b5967/html5/thumbnails/12.jpg)
FSNSYou only learn by doing it yourself
From Scrap and Scratch