VBE is base to emitter voltage of npn transistor. Which is fixed and in the range of 0.6V-0.7V. Si material is used to form a PN junction so the cut in voltage of Si is 0.6V-0.7V. You can refer transistor datasheet for more information.
@Electronics Circuit Hub, correct me if I'm wrong, but if you multiply 0.43A by 150 beta, how do you get a lower current? I would think that if you multiply 150 beta with 0.43A you should get 64,5A?
Hey...Thanks for bringing out this question. Sorry I may not able to watch this video again due to policy violation. But if you help me with the Vb = ? , Rb = ? I can re calculate for you. Sorry if I made mistakes somewhere. Generally ib = (Vb-Vbe)/Rb And ic = beta * ib. .43A base current is unrealistic and BJT will get damage. Isn't it 430uA current ?
@@ElectronicsCircuitHubECH I'm sorry I've read your u as a m. You were right... My apologies, it made no sense if Ib was higher than Ic. Thank you for your fast response and your video!
Hi...Thanks for asking good question..do not feel sorry about it...=(64.5*100)/1000=6.45V. Now 10-6.45=3.55. 64.5mA = (64.5/1000) A. So current unit should be in A.
I think, you are talking about base resistance 10K, its 430uA not 430mA. 10K allows 430uA to flow in base of NPN BJT. This question i found in internet and trying to solve it.
Hey...Thanks for asking good question. I think you are talking about B-E loop. So simply apply KVL : Vbb-ib*Rb-Vbe=0. Now you can calculate whatever you want. Please let me know if you have doubts.
My first video for starting my (EDC engg sem 3) thnx sir... People like you are making world a better place
@@narutokiller8432 Hi Thanks for those words. Watch all the video of this channel. You will become HW engineer after 4 year lots of stuff are there.
Thank you so much for this video
It has really saved me in my exam 😊😊😊😊
Most welcome
How do we know that Vbe =0.7V? Is it a constant value that's true for any circuit?
VBE is base to emitter voltage of npn transistor. Which is fixed and in the range of 0.6V-0.7V. Si material is used to form a PN junction so the cut in voltage of Si is 0.6V-0.7V.
You can refer transistor datasheet for more information.
if transister made with silicon, vbe is 0.7v
@Electronics Circuit Hub, correct me if I'm wrong, but if you multiply 0.43A by 150 beta, how do you get a lower current? I would think that if you multiply 150 beta with 0.43A you should get 64,5A?
Hey...Thanks for bringing out this question.
Sorry I may not able to watch this video again due to policy violation. But if you help me with the Vb = ? , Rb = ? I can re calculate for you.
Sorry if I made mistakes somewhere.
Generally ib = (Vb-Vbe)/Rb
And ic = beta * ib.
.43A base current is unrealistic and BJT will get damage.
Isn't it 430uA current ?
@@ElectronicsCircuitHubECH I'm sorry I've read your u as a m. You were right... My apologies, it made no sense if Ib was higher than Ic. Thank you for your fast response and your video!
@@thijsgrimbergen8898 Its my pleasure. Keep Learning , Keep Rocking !
hello! why Vbe=0.7V ? It's not given in the problem. How did you find it?
Ideally Vbe of non transistor is in the range of 0.6V-0.7V.
Please look at the datasheet BC547.
Sorry sir but can you explain how Vce=10V-64.5mA×100ohms=3.55V??
Shouldn't it be 6440??
Hi...Thanks for asking good question..do not feel sorry about it...=(64.5*100)/1000=6.45V. Now 10-6.45=3.55. 64.5mA = (64.5/1000) A. So current unit should be in A.
Thank you so much sir!@@ElectronicsCircuitHubECH
HOW YOU CALCULATD VCB PLZ TELL AGAIN
Thank you so much 👍😊 I've understood 🙏
Most welcome....pls find many more such video here in this channel.
Alright ❤️❤️
Thank you so much sir , this is very helpful
Thank you very much.
Hello po sorry newbie here how did you input 10k in the calculator that results into 430MA?
I think, you are talking about base resistance 10K, its 430uA not 430mA. 10K allows 430uA to flow in base of NPN BJT. This question i found in internet and trying to solve it.
All z correct n well explained 👏
Thanks, Visit more on channel for such useful video.
Thank you sir!
Most welcome, glad it helped you.
shouldnt Vce = Vc + Vb ? 3.55V + 0.7V = Vce = 4.25V?
Hey...Vce =Vc-Ve always.
Thanks I copy now 😊
Go ahead !
you may watch many more video here.
How to put the Vbe value
Vbe=0.7V
Thank you this helped me
Glad to hear, it helped you. Many more learning video on this channel.
hi sir if vbb start with +Vbb- then Vbb value will minus can u explain sir
sry for bad eng
Hey...Thanks for asking good question. I think you are talking about B-E loop. So simply apply KVL : Vbb-ib*Rb-Vbe=0.
Now you can calculate whatever you want. Please let me know if you have doubts.
Ye plus or minus sign kessy lgttty hn
Hi...Learn some basic network theory.
Its easy when we jump from + to - then the sign afterwards as in this case - will be taken but when we jump from - to + then + sign is taken
@@akki0908 great explanations, thank You.
@@ElectronicsCircuitHubECH welc
@@akki0908 it's like kirchhoff voltage law's sign convection..
😢❤this same question can out as my exam question thanks ❤❤i give you a like and subscribe
He he...you can do more for me. you can send me super thanks you can be member of my youtube community.
Is Ie 0 here?
Hi..Thanks for question, No Ie=Ic (Ie value is close to Ic).
How do you get 0.7v
0.7V is the Vbe voltage of Si BJT.
base to emitter voltage.
🙏🙏🙏
@@bikram2017 🙏🙏
Vce i think you get wrong answer
Answer is 6440 correct
not sure, i need to review the video again. thanks for your feedback.
Thank yoo
@@a.j1298 Welcome
Are the answers correct
what did you find wrong ?
@@ElectronicsCircuitHubECH someone told me so but I trusted your answers
@@emmanuelbili6886 You should trust the step i explained in the video. All answers are correct.
@@emmanuelbili6886 eee problem ba bili just copy ala
Your answers are making confusion for me and great work I appreciate your work very very beneficial video thanks a lot ❤
This video shows on solving DC of emitter bias circuit: ruclips.net/video/Rqpiz6_3OUw/видео.html
Thanks
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your pen sound suck my mind pls remove the audio
Hey...sorry for inconvenience. You will not see in upcoming videos.