HK CREATES UNIQUE!
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The video shows how to use a Bipolar Junction Transistor as a switch.
Watch Transistor based timer workings : • Transistor based Timer...
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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! Smartphones are actually millions of times faster than the ENIAC.
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