Transistor as a switch, how to calculate base resistor's resistance? || Bipolar Junction Transistor.
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Published 2023-09-01
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The video shows how to use a Bipolar Junction Transistor as a switch.
Watch Transistor based timer workings : ย ย ย โขย Transistorย basedย Timerย circuits,ย Howย ...ย ย
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In the video, I said that current gain is not an important factor, What I actually meant is that value of Current gain is not needed to be accurate, to saturate a transistor high enough base current is required, In the equation you can assume beta value to be low (around 10) so that base current gets higher.
Also, As beta value changes with temperature, taking lower beta value solves temperature variation problems.
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TIMESTAMPS
0:00 intro
0:49 electrically activated switch
2:57 About Relay
3:36 About Bipolar Junction Transistor (BJT)
6:37 Advantages of Transistor over a relay
7:21 Current Gain of a BJT
8:13 Transistor as OFF switch or as ON switch
9:59 Base resistor calculation
10:59 Base current from same source
11:32 Practical example of Base resistor calculation
13:41 outro
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About myself-
My name is Hrishikesh Kalita,
From Pathsala, Assam, India.
Time it took for me to make this video- 50 hours+ in a span of 3 months.
Music I used: "Dreams" by Bensound.com
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correction:
0:22 I said that it is 100 x faster, which is wrong! Sma
All Comments (21)
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It would really help me if you share this video with your friends. It will motivate me to make more videos like this. Thank you!!
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Simple and straightforward! Nice!
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Very well explained, and your English is well pronounced. Thank you much.
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The way you are explaining is very very simple understanding bro... thank you very much.... for your hard work...๐ค๐ฏ
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Subscribed ๐,keep doing such useful contents
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Sweet. Directly to the point. Thank you.
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I finally understand how a transistor works now. After more than 20 years of trying to understand ๐ . Thanks bro. Gonna watch it again
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That was very well explained โ excellent!
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this by far the best explanation of how the transistor works. thank you so much HK
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Excellent. Well presented. To d point without ambiquity.
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๐๐๐ Nice to see an excelent video explaining those functions, when I began in Electronics there was nothing, 50 year ago...
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Very clear! Thank you.
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really good illustration. keep up the good work
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Thank you. Very helpful and clear. I recently found a textbook in a used book store called "Basic Mathematics for Electronics". I am looking forward to studying it since it will just cover what I am interested in for electronics math more directly than other books I have found. Please keep making more videos as your time allows.
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Highly informative.
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THIS WAS GREAT!
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I usually donโt comment but keep this up bro itโs gonna payoff
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Very helpful. I was struggling how to interface my ESP32 GPIO pins to a 5v relay, as the pins give 3.3v. This video informed me on how to use a transistor to switch 5v to the relay using a 3.3v input to the base
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Hope your hard work reaches the world. Even being a non Engn student, I could understand everything! You made it so practical and easy to understand. โค
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Master, thanks. You gave until now the best and practical explanation. Keep the good ๐ explanation, and your channel will grow ๐
