Monostable Multivibrator (using op-amp) Explained

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  • Опубликовано: 24 дек 2024

Комментарии • 127

  • @ALLABOUTELECTRONICS
    @ALLABOUTELECTRONICS  6 лет назад +11

    The timestamps for the different topics covered in the video:
    0:22 What is Monostable Multivibrator ?
    1:28 Working of the monostable multivibrator
    4:48 Design of Monostable Multivibrator Circuit
    6:34 Derivation of the equation for the monostable multivibrator
    9:38 Use of RC Differentiator circuit for the generation of the trigger signal

    • @bhuvaneshs.k638
      @bhuvaneshs.k638 6 лет назад

      Waiting for 2nd order active low pass ,high pass filter derivation using opamp...

    • @sumitkumarpal2306
      @sumitkumarpal2306 6 лет назад +1

      Sir, when the diode is in forward biased condition than how we know that the forward biased volatge always less than beta vsat voltage at non inverting node?

    • @noweare1
      @noweare1 6 лет назад +1

      @@sumitkumarpal2306 Because forward bias = 0.7 volt. So Vsat*(R2/(R2+R1)) must be larger than 0.7 volts. R2 would have to be very small to have less than 0.7 volts across it. Good Question.

    • @ajalkrishna
      @ajalkrishna 6 лет назад

      Which softwear ur using for making such writings? Diagrams?

    • @sindhujalingampally6066
      @sindhujalingampally6066 4 года назад +1

      🙏🙏🙏 thank you so much sir🙏🙏🙏

  • @abilash.m6588
    @abilash.m6588 5 лет назад +19

    Exactly this is the video what I need. A voice of guy from tamil nadu

  • @chandanjain1728
    @chandanjain1728 3 года назад +3

    best channel for electronics engineer

  • @pushpendrayadav7069
    @pushpendrayadav7069 3 года назад +1

    Best channel on RUclips about electronics

  • @paulclements3412
    @paulclements3412 3 года назад +4

    you are a very clever guy, beautifully explained, thankyou, Paul Clements, electronics designer

  • @venkatasaiprasannachigiche1704
    @venkatasaiprasannachigiche1704 6 лет назад +5

    Thank you very much for this lecture series on opamp. They are very clear and much useful.

  • @mr.amp0076
    @mr.amp0076 6 лет назад +3

    Obisly i understand.... Dude... Help me a lot.... Just watching your videos & putting the equipment on bread board & see the results & calculate my own one & modify... Awesome

  • @ABIMASS-000
    @ABIMASS-000 Год назад

    so clear and great explanation

  • @abhisheksingh6153
    @abhisheksingh6153 5 лет назад +4

    Nicely explained.
    You are a great teacher

  • @livethegame3851
    @livethegame3851 5 лет назад +1

    Best videos available on youtube for electronics

  • @agstechnicalsupport
    @agstechnicalsupport 2 года назад

    Good explanation of monostable multivibrators. Thank you for sharing !

  • @dmsjuggy143v
    @dmsjuggy143v 3 года назад

    Proper vedio to understand the process.... Thanks sirji

  • @GrindOne69
    @GrindOne69 3 года назад +2

    just excellent. from ur video, I made 5 pages of detailed explanation of monostable multivibrator. very interesting!
    Could you simulate a design using NI MultiSIM?

  • @JITENDRAKUMAR-sg9xz
    @JITENDRAKUMAR-sg9xz 5 лет назад +1

    Very Insightful lecture... Sir

  • @ankitmishra2723
    @ankitmishra2723 5 лет назад +1

    Sir U are best in electronics

  • @adityaprasadsahu5529
    @adityaprasadsahu5529 5 лет назад +2

    Will you please do a video on bistable multivibrator... It will be very very helpful for all the students.

  • @sagarsapkota7743
    @sagarsapkota7743 6 лет назад +2

    thanks sir greeting from nepal
    sir upload more lecture yours lecture are awesome

  • @ajinkyadhekne
    @ajinkyadhekne 6 лет назад +4

    Very good explained.. thank you..!

  • @jimmyneutron8702
    @jimmyneutron8702 2 года назад +1

    Can the astable pulse be a time period that is less than the trigger pulse? Example: i press the button for 20 milliseconds. The astable state switches on for

  • @sreeharibalachandran
    @sreeharibalachandran 5 лет назад +3

    Very good presentation sir, Please tell me how to modify this circuit so that it can accept a positive trigger signal instead of negative

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  5 лет назад +1

      Just use inverter circuit. you can even use transistor or op-amp to invert the triggering signal.

    • @sreeharibalachandran
      @sreeharibalachandran 5 лет назад

      @@ALLABOUTELECTRONICS Thankyou Sir, Is there any relation between the unstable state time and the trigger pulse time?

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  5 лет назад +2

      @@sreeharibalachandran Trigger pulse should be less than the unstable time. It should be sufficient enough so that the output can switch from the positive to negative saturation voltage. (and that will depend on the slew rate of the op-amp). For fast op-amps, the switching will occur in less than 1us. For op-amp like 741it may take 2o us to go from 10 to -10V. So, roughly it will be 20-25 us. So, trigger pulse should remain low for that duration.
      For fast op-amps, even 1us pulse width is enough for the transition.
      I hope it will help you.

  • @srijanisallyouneed
    @srijanisallyouneed 3 года назад +1

    10:52 *Why we should eliminate the positive spike* ? I didn't get it...
    Please anyone response

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  3 года назад

      Here, the monostable is getting triggered by the falling edge.

  • @ami6packs
    @ami6packs 4 года назад +1

    Great video. But there is no video from you on bistable multivibrator using op amps. Any plans?

  • @bhaskarmishra8479
    @bhaskarmishra8479 4 года назад +2

    sir could you pls explain how those spikes were coming while using the differentiator circuit

    • @nthumara6288
      @nthumara6288 Год назад

      becouse when we differentiaate a constent we get a 0 voltage and the terminals give a valu becouse is a unit step function

  • @educationaltechnology8363
    @educationaltechnology8363 2 года назад +1

    you would have the best electronics channel if you make a practical examples anyway thanks for sharing and consider making a real examples

  • @livelooper
    @livelooper Год назад

    The op amp circuit and trigger circuit are both good.
    Add them together like this and the monostable can't work, as the voltage divider on the output is compromised.
    This combination seems to be ubiquitous on the internet, however it's useless.

  • @andreaberetta8289
    @andreaberetta8289 2 года назад

    Why does the diode become forward biased when the Vout=Vsat and reverse biased when Vout=-Vsat? Cause if we use Kirchhoff on the external mesh, we don’t consider the voltage across R?

  • @ashkananisi5181
    @ashkananisi5181 3 года назад

    Thanks for grate Explanation! how to do this job with single supply op amp ????? Any suggestion?

  • @perikisudheer4294
    @perikisudheer4294 4 года назад +1

    i have a doubt regarding ...why we used a negative trigger why not positive trigger?...if yes wt are the problems we may face..

  • @rizwanak3424
    @rizwanak3424 5 лет назад +2

    Great thank you sir.i don't know how to express it

  • @noweare1
    @noweare1 6 лет назад +1

    Excellent presentation. Thank you very much.

  • @shiva6326
    @shiva6326 6 лет назад +1

    Bro make a video on "concept of nodal analysis"

  • @alejandroamilcarolguin1887
    @alejandroamilcarolguin1887 2 года назад

    Muchas gracias, es justamente la explicación que estaba buscando.

  • @nithishrana1624
    @nithishrana1624 2 года назад

    Just Great 👍
    Suggestion : Make a video of Bistable Multivibreter using Op-Amp.

  • @adwaithadhu1016
    @adwaithadhu1016 5 лет назад

    7:54. .. why cant we take Vfinal = +Vsat ... please reply...!???

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  5 лет назад +1

      Because here we have assumed that, the output of the op-amp is +vaar initially, and when transition occurs then it goes to - Vaar. That means capacitor starts charging towards the -Vsat Voltage.
      I hope it will clear your doubt.

  • @chandrashekarraojaddu2084
    @chandrashekarraojaddu2084 6 лет назад +1

    please make a class of transistors and mosfet

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  6 лет назад

      I have already started the new series on it. Very soon you will get the videos on JFET and MOSFET.

  • @revanthvarma2000
    @revanthvarma2000 5 лет назад

    Sir, why do we actually need that trigger circuit as the Vin itself is a short span signal?

  • @achyuthtanaykota7156
    @achyuthtanaykota7156 5 лет назад

    Why are we getting (- BVsat) for a time period of t by using momentary negative trigger?
    By using - ve trigger, the Vid will be negative momentarily, but how are we getting the unstable state for a long time? does capacitor have any role? please explain.

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  5 лет назад

      Yes, the capacitor does play a role. And if you see the time duration T, it depends on R, C, and R1, R2.
      As T= RC ln (1+R2/R1)
      Please check the derivation at 6:34. You will get an idea about the working of the circuit.

    • @himanighai6947
      @himanighai6947 5 лет назад

      11

  • @shrivastavapallavsharan7823
    @shrivastavapallavsharan7823 5 лет назад +1

    Thanks you so much for the effort. Really helpful 👍

  • @ganeshdilli2699
    @ganeshdilli2699 6 лет назад +1

    what is the use of diode in parallel with capacitor? pls........ rply to my question it is my doubt

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  6 лет назад +3

      The diode will ensure that the voltage at the inverting node is less the input voltage. Because normally the Vin is high voltage (Vcc) and during the triggering action only it will go low. So, until the trigger voltage goes low, the voltage at the non-inverting node will be more than the inverting node. Hence, the output of the op-amp will be high during that time.
      I hope it will clear your doubt.

    • @ganeshdilli2699
      @ganeshdilli2699 6 лет назад +2

      thanks for clarification........

  • @savagegirl6318
    @savagegirl6318 4 года назад

    Sir,
    How to make -vsat as the stable state instead of +vsat. Does the diode reversal suffice?

    • @amanpratapsingh1243
      @amanpratapsingh1243 3 года назад

      Yes it will be enough. If you are using diode in differentiator circuit for taking trigger signal input, you have to reverse it as well.

  • @tayfun11100
    @tayfun11100 5 лет назад

    What is max frequency i can reach whith this system? For example, can i make a LEDONn for 1 microsecond and OFF 1 microsecond ?

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  5 лет назад +1

      It is possible to do that using an astable multivibrator.
      But if you are designing it using the op-amp, then you need to check the slew rate and the gain-bandwidth product of the op-amp.
      I mean it should be able to support that rapid transitions.

  • @softschool1787
    @softschool1787 6 лет назад

    Please make video on Transistor biasing and amplification both BJT and MOSFET.

  • @vikki_music7
    @vikki_music7 5 лет назад +1

    Why Vfinal is -Vsat and not Beta times-Vsat.Please explain Sir.

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  5 лет назад +1

      Because the capacitor is actually charging towards the -Vsat voltage. But due to the comparator, you will see a transition at -Beta times Vsat voltage. If that transition is not happening at -B Vsat then the capacitor would have charged up to -Vsat voltage.
      I hope it will clear your doubt.

  • @eushakhan5813
    @eushakhan5813 5 лет назад +1

    Ap consi class me parte ho?

  • @Amityphysics
    @Amityphysics 5 лет назад +1

    wooooooooooooo ........sir ji nice

  • @colburg2731
    @colburg2731 5 лет назад

    want the unstable output to be a minimum of 10 sec; Vcc = +3V; using cmos op-amp; using C=10exp-6 F, R = 14.4M ohm
    If Vcc = 3V, +Vsat = 3V, & -Vsat = 0V
    Is R = 14.4M ohm too large?

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  5 лет назад

      Instead of going for large value of R, you can change the value of C. I mean just use 100 uF instead of 10 uF. And then you can use 2M ohm potentiometer.

  • @colburg2731
    @colburg2731 5 лет назад

    Can I use a single Vcc = +3V & 0V - confused by +V & -V supply to op-amp - so that Vsat = Vcc & -Vsat = 0V

  • @apekshaphadte4443
    @apekshaphadte4443 Год назад

    Why only negative spikes are used at non inverting?

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  Год назад

      Because we want to change the output of the op-amp from +Vsat to -Vsat. That will happen when the voltage at the inverting node is more than non-inverting node. And to make that happen, we need to momentarily reduce the voltage at the non-inverting terminal. When the negative spike is applied then only, momentarily the voltage at the non-inverting terminal will go below inverting terminal. And due that, we will see a transition in the output voltage. I hope, it will clear your doubt.

  • @yeswanthtenali1674
    @yeswanthtenali1674 4 года назад

    why we move towards monostable multivibrator from a stable multivibrator??
    is there any use of its using???

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  4 года назад

      The thing is, the different multivibrators are used for the different applications. The monostable multivibrator can be used to generate the pulse width of the finite duration based on the triggering instance.
      For example, let's say you want to design the alarm system, which rings or shows red light when particular even occurs.
      The monostable multivibrator can be used in such project.
      This is just simple example, but there are many other use of this multivibrator.
      I hope it will clear your doubt.

  • @mahendrapara002
    @mahendrapara002 5 лет назад +1

    Not discussed about recovery time

  • @koppanaramana5986
    @koppanaramana5986 3 года назад +1

    Koppana veera GANESH

  • @gokulsujathan3405
    @gokulsujathan3405 6 лет назад

    Why the period of trigger pulse is made small? Pls explain

    • @noweare1
      @noweare1 6 лет назад

      It has to be smaller than the pulse it creates at the output or the output will be continually low, I believe.

  • @RaviShankar-ko1ew
    @RaviShankar-ko1ew 5 лет назад

    Sir, I always watch ur series on electronics and find quite easy to understand but this explanation was a messed up! And quite fast.Still ur videos makes easy to work out!..

  • @UECAshutoshKumar
    @UECAshutoshKumar Год назад +1

    Thank you sir

  • @rasim7060
    @rasim7060 5 лет назад

    How to choose the value of Rd and Cd

  • @examtips3913
    @examtips3913 6 лет назад

    which software do you use for making tutorials ?? Please tell me..

  • @blackcat1040
    @blackcat1040 Год назад +1

  • @mayurshah9131
    @mayurshah9131 6 лет назад

    Very good work

  • @MegaSHUCHITA
    @MegaSHUCHITA 5 лет назад

    best video...thanks Sir

  • @Ajaykumargupta-ig6fc
    @Ajaykumargupta-ig6fc 5 лет назад

    Sir can you explain then multivibrator using transistors

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  5 лет назад

      Yes, recently I got so many requests for that. Very soon I will make the video on it.

    • @Ajaykumargupta-ig6fc
      @Ajaykumargupta-ig6fc 5 лет назад

      @@ALLABOUTELECTRONICS yes sir because in our banaras hindu university it is based on using transistor and in practical I unable to understand if you provide lecture as recent as you can it will so helpful for us thanku 🙏💕sir

  • @shubham1999
    @shubham1999 6 лет назад

    Hey, make a video on multivibrator.

  • @quantumboy48
    @quantumboy48 3 года назад

    Thanku very much 🙏

  • @guidocedrone9056
    @guidocedrone9056 5 лет назад

    La simulazione del flusso eletrico perché non la fate vedere sul simbolo circuitale

  • @anasabdulla5205
    @anasabdulla5205 6 лет назад +4

    Waiting for 555

  • @kaustavguharoy4532
    @kaustavguharoy4532 2 года назад +1

    The op amp man

  • @rhp1234
    @rhp1234 3 года назад

    Pls give me formula to calculate pulse width in monostable multivibrator

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  3 года назад

      It’s already explained in the video. Please check at 6:16. The timestamps are also given in the description.

    • @rhp1234
      @rhp1234 3 года назад +1

      @@ALLABOUTELECTRONICS Actually sorry for this que . I got confused between time and pulse width. After wards, my doubt get cleared.

  • @sindhujalingampally6066
    @sindhujalingampally6066 4 года назад +1

    Thankyou sir

  • @sanjeeeeev
    @sanjeeeeev 6 лет назад

    Dude u r d best 😉

  • @kanhapatra5717
    @kanhapatra5717 6 лет назад

    Please explain triangular wave generator Tomorrow I have exam

  • @MMTRINATHSOLASA
    @MMTRINATHSOLASA 4 года назад

    V nice

  • @tharunkumaar2068
    @tharunkumaar2068 3 года назад

    Awesome
    Amazing

  • @younesabdellatif6546
    @younesabdellatif6546 3 года назад +1

    thank youuuuuuuuuuuuuuuuuuuuuuuuuuuuu

  • @djangolean
    @djangolean 4 года назад

    amazing man

  • @sudarsanareddy.k2337
    @sudarsanareddy.k2337 6 лет назад +1

    TQ sir

  • @manikiran-wu7kf
    @manikiran-wu7kf 6 лет назад

    bro bistable multivibrator using opamp

  • @sarveshramkumar9782
    @sarveshramkumar9782 Год назад

    I am an advanced member of this channel, where to access the notes for op amps and vibrators??

    • @ALLABOUTELECTRONICS
      @ALLABOUTELECTRONICS  Год назад

      Check the membership tab. I have already replied to your comment.

  • @arjunaravind8147
    @arjunaravind8147 5 лет назад +1

    Thankoo sir

  • @dineshnandan5101
    @dineshnandan5101 6 лет назад

    nice

  • @kedarbhattacharya6418
    @kedarbhattacharya6418 3 года назад

    Cc: t series

  • @swapnilsawake3286
    @swapnilsawake3286 8 месяцев назад

    i dont understand sir

  • @SajanKumar-ec2us
    @SajanKumar-ec2us Год назад

    explation is not in detail

  • @physicsison
    @physicsison 6 лет назад

    First like

  • @anasabdulla5205
    @anasabdulla5205 6 лет назад

    Waiting for 555