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Half wave Rectifier Explained
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- Опубліковано 10 лип 2018
- In this video, the half-wave rectifier circuit working and different specifications /parameters like RMS value, average value, efficiency and ripple factor of the half-wave rectifier is discussed.
By watching this video you will learn the following topics:
1:00 Half wave rectifier circuit and its working
4:54 Average value of half wave rectifier
6:02 RMS value of half wave rectifier
7:35 Peak Inverse Voltage (PIV) for half wave rectifier
8:23 Ripple factor of half wave rectifier
9:10 Half wave rectifier with capacitor filter
12:12 The efficiency of the half wave rectifier
12:57 Applications of half wave rectifier
What is half wave rectifier:
The half wave rectifier is the circuit designed using the diode which is used for converting the AC voltage signal into the DC voltage.
The half wave rectifier only passes the one half of the input sine wave (either positive or negative) and rejects the other half.
The output of the half wave rectifier is pulsating DC. The ripple in the output waveform can be reduced using the filter.
To remove or reduce the ripple from the output waveform, the RC time constant of the filter circuit should be much larger than the time period of the half wave rectifier.
Parameters of the half wave rectifier:
Average Value: Vm / π
RMS Value: Vm/2
Ripple Factor: 1.21
Efficiency: 40.6 %
PIV: Vm
The link for the other useful videos related to diode:
1) Introduction to a diode and V-I characteristics of the diode
• Introduction to Diode:...
2) The diode resistance Explained:
• Diode Resistance Expla...
3) RMS and Average Value:
• RMS (Root Mean Square)...
This video will be helpful to all students of science and engineering in understanding the half wave rectifier.
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#HalfWaveRectifier
The timestamps for the different topics covered in the video:
1:00 Half wave rectifier circuit and its working
4:54 Average value of half wave rectifier
6:02 RMS value of half wave rectifier
7:35 Peak Inverse Voltage (PIV) for half wave rectifier
8:23 Ripple factor of half wave rectifier
9:10 Half wave rectifier with capacitor filter
12:12 The efficiency of the half wave rectifier
12:57 Applications of half wave rectifier
Thank you so much bro... Tommorow I have seminar...And she didn't explained that....We have to search the topic in net and tell the seminar.... Thank you so much
Bro this is uncontrolled rectifier kindly explain controlled rectifier for all
sir you are not explaining clearly . at every new step you should tell the reason / definition/ and many more . some students are not much talented . so plz this is my humble request to work on these problems as soon as possible . thank you'
,
I never understood how rectifier works until I watched your video, simple and easy to understand, thank you so much
Thank you. You always have such clear explanations, and don’t skip the details.
Many many thanks brother. U made me understand the whole semiconductor chapter in just 2 hours. Tommorow is my exam and it was very helpful. Nice explanation. 👏🏻👏🏻👏🏻♥️♥️♥️
Such a wonderful lecture...
Feeling blessed that you posted it.
Thankyou.. 👍
Your videos are very helpful...thanks for sharing these!
You are lectures are great and easy to understand.good work sir.
These videos have just saved me this semeter
Thank you very much 🖤🖤
Sir your accent is sooo good that make learning easy and we can understand thoroughly.👌
Samaz gya working muze utna hi chahiye tha. Thanks bro.
Thank you , your videos are very helpful
Nice and Simple explanation.... Easy to Understand....
Thank you very much. It's really very helpful.
Explained in simple words👌👍
Sir,your teaching is too good to understood this vedio.Thank you so much for making this vedio..👍👍👍👍keep making vedios👍👍👍👍👍
Thank You So Much Sir. It is a great explanation.
literally "JOD OF ELECTRONICS"
thanks a lot !!
Nice explanation I will understood it easily thank you ❤️
thank you so much sir you really supply complete information!
Your explanation is nice, thanks.
Nice video really .. we wait more from you
Well explained mahn
Thank you 🙏 so much
Great work
it really helped , bless u
Such a good explanaton sir thanks
Thank you very much sir!!
sir aaj mera practical h midsem ka maine class 12 me kabhi nhi padha semiconductors,,
thanks aapne pn zener half ache se padha dia lets wait for viva
thank you so much sir that really helps, i have a question about why it has to reduce the maximum current rectifiying in parallel montage?
Well explaind
Just Excellent ❤️💜💙
Really helpful
Good explain sir thanks
It was helpful
And I have subscribed ur channel
Nice explanation.....
good tutorial
Thanxx sir u are best
Thank you sir
Superb!!¡
Superb sir
Sir in my notes capacitor is before load resistance.....bcoz we hve to filter it before drawing
But still anybody can understand at once by ur teaching sir
Thank you 😊❤️
Very very nice sir ji
Sir @8:51 ripple factor r is *Vrrms/Vdc* not *Irrms/Idc* small mistake but a significant one. Thank you for this course you saved my life.
Dear sir,
If i will lighting a string of leds, each led has drop voltage 2V. I use half rectifier with Vac(rms) 220V, how many led can i use in series for 1 string ?
and then what is the value of resistor to limit the current to be 15mA ?
Please explain step by step include the formulas ?
Thanks
The formula for ripple in half wave rectifier is wrong, it should be Iac in the numerator instead of Irms.
It's the RMS value of ac component of output current
nice video
May you explain transformer utilization factor in HWR?
hi..thanks for the lession....when you say the half wave rectifier is 47 % eficient...i understand that we only get 47% of the power through...but would it be true to also say 53% of the power is not actualy used or wasted or lost?...im thinking the word eficiency is the wrong word...becaus what we dont use is not lost its just not being used when it is in the turned off situation. for example if i turn a tap on above my glass on for 1 second then i turn the tap off for 1 second we can see the tap is 100% eficient for 1 second and 100% eficient for the next 1 second becaus no water is wasted or lost.
Great👍
Thanks 🙏❤
excellency your honour
can you please tell me how to apply the filter
Hello!
You are the best ❤ but please I need you to solve series exercise on both half wave and full wave rectifier.
Please I should have exams next week.
@innovator from Sierra Leone
Sir please attach PDFs of topics explained in the video. It will be very very useful for us. Please sir.
Thank you sir .It's well defined and please upload physics videos frequently..
Awesome
Thank you! ☺
At 6:26 should it not be V/root 2 ? Erms is E•/root 2
Careful he's our hero
Is there any problem if phase and neutral lines the input of the rectifier get swapped
best ever
good 👍 explanation
wah
tacod betul
3:44, can you explain why the output wave [right] is not covering the entire space from t=0 to t=T/2 ? And numerically small the the time-gaps between t=0 and start of DC pulse and between end of DC pulse and t=T/2 ?
Because during that small initial period, the input voltage is less than 0.7V. And because of that, the diode is not conducting. Since, it is not conducting, it will act as an open circuit. And hence, the output voltage will be zero for that duration. I hope, it will clear your doubt.
Please upload the video in 240p and 360p also.
good boy
Tq
i have a question 11:55
how does the capacitor charged upto Vm in just half circle of time period and in the other side it is not discharging in the same time. and in the second yime why the charging graph following the sin graph?
why it is discharging as a linear function( because of RC>>T?)
Yes, it will depend on the RC time constant. If RC time constant is much larger than the time period then capacitor will discharge less and it looks as if it is discharging linearly.
Hi Dude, your videos are very good. Do you have the related pdf notes too?
will provide it soon.
sir whenever anode and cathod have same voltegae then diode should be switched on ..but in case of rectifiers u were saying diode would be open swotch,how it would be sir?
To turn on the diode, the voltage at the anode should be more than a cathode terminal. (to be precise, it should be more than the forward voltage drop or the threshold voltage of the diode)
very halpful
how do u proof the formula?and wat is the period of the havf wave rectification graft?
I have made a separate video for the proof of the formula. Please go through the playlist diode and diode application on the playlist page of the channel.
2:40 there really needs to be an explicit ground connection for that to make sense.
Sir ripple and PIV samajh nahi aa raha😭
But, why load resistor is used in circuit ???
sir charging of capacitor depends upon the time constant then how could we say it will get charged by Vm ??
During the positive half cycle, the capacitor will charge through the series resistance of the diode. (The resistance of the diode in the forward bias condition). If we assume the ideal diode, then its series resistance is zero. Of course, to charge the capacitor, we also need voltage source. Here this Vin will act as a voltage source for that. And during positive half cycle, the capacitor will get charged upto the peak voltage Vm. The RC time constant tells us, how fast the capacitor charges. But for charging the capacitor, we need a supply voltage. I hope, it will clear your doubt.
Yep
What will a half wave rectifier produce
As I mentioned in the video, if the sine wave is applied as an input, it only allows only one half cycle to pass through it. (depending on how the diode is connected).
So at the output, there will be only either positive or the negative half of the sinewave.
Why input frequency equals to output frequency in half wave rectification?
Because the output waveform repeats itself at the same time as a sine wave repeats itself. Plot one on top of the other and you will see.
Why the output of half wave rectification fall in pulses?
What's the exact value of RMS voltage? V/√2 or V/2. In other video it's shown asV/√2 and in this video it's V/2.
The RMS value depends on the waveform. For the half wave rectifier, it is Vm/2. For the full wave rectifier, it is Vm/√2.
I hope it will clear your doubt.
@@ALLABOUTELECTRONICS Thanks
Before I haven't seen the derivation.
Does Vm mean max voltage?
Yes, its the maximum voltage of the sine wave.
Diode will remain forward biased even when capacitor discharge at positive half cycle- Rectifier circuit
Why should we use only silicon voltage
Because most of the diodes which are being used are silicon diodes.
can we have pdf notes dude
Hi Sir! How can we get a negative wave only?
Just reverse the direction of the diode.
@@ALLABOUTELECTRONICS OK THANK YOU !!!!
Can you provide notes
Man after one diod, Current will be AC or DC ?
The output would be pulsating DC. It won't be exact DC signal. After one diode, ( depending on how the diode is arranged) you will get either positive or negative half cycle of the sine wave. After passing that signal through the filter circuit, we can get the DC voltage. ( Still It will have ripples)
I wonder why RMS Value is Vm X 0.5 and not Vm X 0.707.
Frank
I am in class 1 still i understand rectifiers
I'm in kg and I do too
Sir at 6:35 Vrms should be Vm/square root(2)
For a sinewave, the RMS value is Vm / √2. For the half-wave rectifier, it is Vm /2.
For derivation, you can check this video: ua-cam.com/video/A2SMI31EgMA/v-deo.html
we want half wave rectifier numerical problems
It has been covered on the second channel. Please check diode and diode application playlist.
You forgot to multiply the efficiency by 100
But can't understand what is ripple ?
In very simple terms, the ripple is the fluctuations in the output waveform. Theatrically, the output of the rectifier circuit should be pure DC. But actually some fluctuations are still present in the output.
@@ALLABOUTELECTRONICS Thank you sir
After watching so many videos the into music is killing me
Plz put subtitile
شنوو اسم المحاسره هاي
RMS voltage is not Vm/2, it's Vm/root2
For half- wave rectifier, it is Vm /2.
For more information, please go through this video:
ua-cam.com/video/A2SMI31EgMA/v-deo.html
Sir Whatever ur writing is not visible because of those subtitles can u please see to it
You can turn of the subtitles manually. In the video setting, you can turn it off. On the desktop, you can also drag the subtitles anywhere on the screen. I hope it will help.
In summary table efficiency listed is wrong
,🙏
Jumps to much doesn't proceed systematicly zzz...
the first time