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Transistor as an Amplifier | Electronics 

myhometuition
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Transistor as an Amplifier:
The major application of a transistor is as a current amplifier.
A transistor can be used to amplify ('magnify') current changes because a small change in base current produces a large change in collector current.
Transistor as an Amplifier | Electronics
Form 5 Physics KSSM Chapter 5 - Electronics
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8 сен 2024

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Комментарии : 57   
@random-rj5vp
@random-rj5vp 2 года назад
I have always struggled to understand this concept on my own, and I'm so glad I found this video! Its amazing how you could explain it so well in such a short period of time thank you so much!
@myhometuition
@myhometuition 2 года назад
Glad it was helpful!
@rickyeo8752
@rickyeo8752 3 года назад
8:27 those are resistors right?
@nishanpaudel5876
@nishanpaudel5876 3 года назад
great explanation . Finally I got insight into the amplifiers. Thank you.
@myhometuition
@myhometuition 3 года назад
You are welcome!
@zzMeow583
@zzMeow583 Год назад
With all due respect, it is *incorrect* to say that "transistor is not voltage amplifier". In fact, transistor, in particular the Bipolar Junction Transistor(BJT), which is taught at SPM level, is indeed used as both current and voltage amplifier. At SPM level, it just covered the current applification process and its formula, which is the IC = (beta)*IB. The statement just said "The *main* application of a transistor is current application". Noticed the word "main". It does not say "The only application...".
@zetaconvex1987
@zetaconvex1987 5 лет назад
Excellent explanation. I learned a lot.
@dukunas6534
@dukunas6534 5 лет назад
great explanation thanks a lot
@webmaster8925
@webmaster8925 2 года назад
I have a confusion, this is killing me. If there is an AC current, direction of current changes. Then why forward bias is not converted into reverse bais?
@jimendimanulya9774
@jimendimanulya9774 3 года назад
good explanation
@myhometuition
@myhometuition 3 года назад
Thanks and welcome
@raymondgarafano8604
@raymondgarafano8604 Год назад
So, the cap hooked to mike is an input coupling capacitor?
@ltlt6117
@ltlt6117 Год назад
Hi i made a common emmiter amplifier for 200mhz signal with 2× gain I can amplify a 50 mv p-p to 100mv p-p but I can't do it for 2v to 4v p-p Why what values should be change???
@VeryMuchBlessed
@VeryMuchBlessed 6 лет назад
Good video. Thanks much.
@mirajkhalid1771
@mirajkhalid1771 6 лет назад
I am confused that amplify which current....?
@Cocoballs546
@Cocoballs546 3 года назад
During this whole amplification process, does the transistor should have enough voltage across the base to the emitter to keep it biased?
@abduljalilrajper1664
@abduljalilrajper1664 2 года назад
great work sir
@myhometuition
@myhometuition 2 года назад
thanks :)
@vyrox116
@vyrox116 4 года назад
But isnt earphone supposed to minimise the sound from the microphone?
@nahone3145
@nahone3145 6 лет назад
I like your accent dudee
@marc4010
@marc4010 3 года назад
Welcome to Malaysia
@Kelvin-ed6ce
@Kelvin-ed6ce Год назад
a very confusing accent emotionally.
@amirgedon
@amirgedon 6 лет назад
What transistor for piezo contact mic?
@arashrkarimi
@arashrkarimi 6 лет назад
What is the function of the battery and voltage divider? I’m confused how the transistor increases the amps? Where does it provide the extra amps? Please explain more the relationships between the battery, voltage divider and the microphone.
@myhometuition
@myhometuition 6 лет назад
The battery is the source of electrical energy. The electrical energy generate electromotive force. The electromotive create potential difference and hence drive the motion of the electrons in the circuit, and hence produce current. The potential divider control how much potential difference should be given to the output (the collector circuit) and the base circuit, and hence control the amplification factor. For example, if the Rc = 50kΩ and Rb = 5kΩ, hence Rc:Rb = 10: 1. If the voltage across the two resistance is 11V, then Vc will be 10V and Vb will be 1V.
@nickrngaru6883
@nickrngaru6883 6 лет назад
Hie. Can i have ur pdf that you are using writen electronic 4
@joetyler835
@joetyler835 7 лет назад
So whats the function of the potential divider there ?
@myhometuition
@myhometuition 7 лет назад
Potential divider is used to control the ratio of the voltage across the collector and the base. For example, if the Rc = 50kΩ and Rb = 5kΩ, hence Rc:Rb = 10: 1. If the voltage across the two resistance is 11V, then Vc will be 10V and Vb will be 1V. Note: Rc = resistance across the collector circuit Rb = resistance across the base circuit Vc = voltage across the collector circuit Vb = voltage across the base circuit
@subratabhuniya451
@subratabhuniya451 5 лет назад
That will two resistor not capacitor
@MHaad-go8zi
@MHaad-go8zi 5 лет назад
For positive half cycle, why output voltage decrease and for negative half cycle why it increases??, plz tell me..
@pasupathynatarajan3816
@pasupathynatarajan3816 5 лет назад
Transistor is having phase reversal property i.e 180 degree so the output is decreases for + half and increases for - ve half
@faik_xdeditz3909
@faik_xdeditz3909 2 года назад
Awesome 👍👍👍🔥
@myhometuition
@myhometuition 2 года назад
Thanks ✌️
@rlinton123
@rlinton123 6 лет назад
you use resistors not capacitors
@myhometuition
@myhometuition 6 лет назад
Yes, you are right. It was a mistake. Thank you for reminding.
@Owais-Ali
@Owais-Ali 5 лет назад
I am trying to simulate it but it won't work. Can you help me out!! ☢☢
@tharmakularajahtholeeshan3478
@tharmakularajahtholeeshan3478 8 месяцев назад
Thanks
@myhometuition
@myhometuition 8 месяцев назад
Welcome :D
@surajkhose1861
@surajkhose1861 6 лет назад
Great
@myhometuition
@myhometuition 6 лет назад
Thanks :)
@saikiranreddy5919
@saikiranreddy5919 6 лет назад
Nice
@jamleckmatu374
@jamleckmatu374 2 года назад
Which book is it please
@hustlaz2k
@hustlaz2k 3 года назад
8:25 obviously it is a resistors sir... i dont know if u really understand what u are teaching sir... it is super basic knowledge...
@sarjeelrashid9602
@sarjeelrashid9602 2 года назад
Same... I was questioning life at that point lol
@FatymaZAli
@FatymaZAli 5 лет назад
currenza
@adzahojeremiahkofimawutor5685
@adzahojeremiahkofimawutor5685 6 лет назад
I like your video .please do you have electronic parts to supply me in Ghana
@chukwubuikemgoodness1325
@chukwubuikemgoodness1325 5 лет назад
Is not my video, but I can supply you electronic part from Alaba Lagos Nigeria. This is my WhatsApp number +2348173351746
@Dippa1991
@Dippa1991 5 лет назад
Can u plz do switch
@kettleghost3721
@kettleghost3721 4 года назад
I actually want to die o_o
@tintinfan007
@tintinfan007 Год назад
"Phoposhanol" 😂😂😂😂😂😂😂
@tintinfan007
@tintinfan007 Год назад
"Khapastor" 😂😂😂😂😂😂😂
@jayantachoudhury6404
@jayantachoudhury6404 2 года назад
u r gadha. u will control current by using capacitor?
@marcelojavier6292
@marcelojavier6292 4 года назад
Chinese accent with wrong pronounciation!!!! Lol
@umeshmakwana3403
@umeshmakwana3403 6 лет назад
Great
@myhometuition
@myhometuition 6 лет назад
thank you :)
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