Full-wave Center-tapped Rectifier Tutorial | Basic Electronics

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  • เผยแพร่เมื่อ 11 ธ.ค. 2024

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  • @CircuitBread
    @CircuitBread  ปีที่แล้ว +4

    We want to thank our Friend of CircuitBread, Triad Magnetics, for their support of this tutorial! You can find the datasheet for this tutorial at catalog.triadmagnetics.com/Asset/VPS24-5400.pdf and you can check out their site at triadmagnetics.com

  • @ericguillot6402
    @ericguillot6402 5 หลายเดือนก่อน +1

    I really appreciate this video. I have some experience with electronics from my high-school, but that's been quite a while ago. I have a few 200 amp vehicle battery chargers I'm repairing, and the 2 diode rectifier was throwing me off. Thanks for the easily understandable explanation.

  • @electronicsguy8609
    @electronicsguy8609 4 ปีที่แล้ว +5

    damn, I respect how u actually help the people in the comment section with their problems.

    • @CircuitBread
      @CircuitBread  4 ปีที่แล้ว +2

      Thanks, we try - sometimes we're more successful than other times.

  • @VasundharaAroskar
    @VasundharaAroskar 10 หลายเดือนก่อน

    Thank you so much for this video . Understood the concept .I came across more than 15 videos but this time I understood.

  • @amittyagiat80
    @amittyagiat80 ปีที่แล้ว +3

    Excellent presentation without any jarring music 😊👌👍

  • @almircampos
    @almircampos 9 หลายเดือนก่อน +2

    Very good. The only thing I it was missing, imho, was a numeric example or, even better, a demonstration in an actual circuit.

  • @gustavofoss2280
    @gustavofoss2280 3 ปีที่แล้ว +6

    Remember, dont get secondary winding peak voltage mixed with the center tapped secondary voltage. The last equation can get confusing to beginners and the diodes need to withstand the total voltage not the one given by just half the winding.

    • @brightonsikarskie8372
      @brightonsikarskie8372 10 หลายเดือนก่อน

      this is very confusing for me; I don't understand why 😥
      I was thinking that PIV = (Vp(sec) / 2) - 0.7 since the lower diode is reversed biased and in the practical model it will be treated as open.
      My professor said this though and I don't understand why it is so: PIV = [(Vp(sec) / 2) - 0.7] - [(-Vp(sec) / 2)] => (Vp(sec) / 2) - 0.7

    • @eric1989
      @eric1989 หลายเดือนก่อน

      my prov qlso said piv is vsec/2, but the way i see it is that the upper half is providing Vsec to the REV doide and load,
      while the other half of the coil is ground and - so it is pulling across the diode. so 2 forces of Potential Difference. for example, 10 and -10. so 20v this is assuming the full windings on Vsev makes 20v.

  • @ilkeryasinyildiz
    @ilkeryasinyildiz 11 หลายเดือนก่อน

    Hi! Thanks for the explanation about center tapped transformers! I rolled up my sleeves to build a bipolar power supply from an old toroidal transformer and LM317 + LM337 regulators.
    I personally fixed (blown thermal fuse) a toroidal center tapped transformer a year ago. I had to unwind the secondary side to reach the blown fuse. It was different than you have shown in the video. Starting point of secondary windings are directly connected to each other from 0V point. Which means the center tap is starting point of winding and is real 0V. The transformer ends with two separate 16V wires and 0V center tap. (16V-0V-16V)
    Can I rectify the AC with just two diodes (for this specific transformer) as well?

  • @CircuitBread
    @CircuitBread  3 ปีที่แล้ว +2

    Hi all! If you want to see the written tutorial this was based on for more details, check it out here: www.circuitbread.com/tutorials/center-tapped-full-wave-rectifier-operation Have a great day!

  • @BorselinoThadchack
    @BorselinoThadchack 3 หลายเดือนก่อน +1

    love ur videos

  • @dalenassar9152
    @dalenassar9152 19 วันที่ผ่านมา

    Thanks for the video!!
    Since this configuration uses only half of the transformer half of the time does it lack somewhat in efficiency, compared to the full-wave bridge??

  • @percyhornickel
    @percyhornickel 24 วันที่ผ่านมา

    Great video, very helpfull... ..I have a question, What about current? Let´s say we have a PT like hammond 290AX which drops 100 mA in the first secundary according the datasheet. Is the current divided by 2 each side of the c.t. winding? 50mA each or each side can manage 100mA?

  • @JohnDoeTVChannel
    @JohnDoeTVChannel 7 หลายเดือนก่อน

    how do I calculate Vpeak on the secondary,do I multiply by sqrt of 2?

  • @tomvandenhoudt4759
    @tomvandenhoudt4759 3 ปีที่แล้ว +1

    Great video. Thank you.

  • @randint
    @randint 2 ปีที่แล้ว

    thanks so much for the video! love you

  • @belongstozorax4640
    @belongstozorax4640 4 ปีที่แล้ว +1

    Please tell me what is the difference between Vpeak(out) and PIV? And how the later is more than the former? Thanks CircuitBread for sending the link to this video.

    • @CircuitBread
      @CircuitBread  4 ปีที่แล้ว +1

      Hi Noorul, good question, this can be confusing. Vpeak(out) is the voltage across the resistor, which is half the output of the secondary, minus the forward voltage of the diode. As the output of the secondary has reference ground at the center-tapped portion of the transformer, that's why the voltage seen by the resistor is HALF the total secondary output. Peak Inverse Voltage, on the other hand, is measuring the voltage across the reverse biased diode. If you look at the diagram (it's easier for me to study these images in the written tutorial - www.circuitbread.com/tutorials/using-diodes-as-clippers-or-clampers ) you can see that the reverse-biased voltage has the entire secondary output, including the negative voltage but minus the voltage of the other, forward-biased diode, across it. So the PIV is nearly double the Vpeak(out). I highly recommend checking out Figures 7 and 8 particularly in the written tutorial, and looking at the waveforms in Figure 7.

  • @carson8074
    @carson8074 4 ปีที่แล้ว +1

    Hey, why sometimes I see the PIV for center tapped rectifier is equal to 2Vm and sometimes it is just Vm, because some of them don't divide the V(secondary) by half at first

    • @CircuitBread
      @CircuitBread  4 ปีที่แล้ว

      Maybe the confusion is that some people are referring to the load voltage versus the secondary voltage. The slight differences between how people label things can increase the confusion as well. But I think that JB did a good job being clear and explicit in the written tutorial, I'd check it out if there's any additional questions: www.circuitbread.com/tutorials/center-tapped-full-wave-rectifier-operation

  • @venusyadav5296
    @venusyadav5296 3 ปีที่แล้ว +1

    Awsm sir

  • @alexandres8846
    @alexandres8846 6 หลายเดือนก่อน +2

    this configuration is better.

  • @samuelpowell87
    @samuelpowell87 4 ปีที่แล้ว +1

    Good stuff

  • @Najila-iy5pt
    @Najila-iy5pt 3 ปีที่แล้ว +1

    Thanks

  • @panthopothik6338
    @panthopothik6338 ปีที่แล้ว

    Hi, Amazing video. I understood Center Tapper Rectifier. But can you explain to me why in the bridge rectifier voltage isn't halved? There too current take two paths to reach Load. Or, Am I understanding it wrong?

    • @CircuitBread
      @CircuitBread  ปีที่แล้ว

      Hey Pantho, there is actually only one path with a bridge rectifier, but that path changes depending on where you are in the cycle. The only reason your voltage drops is it going through the two diodes in each path. Check out this tutorial and see what you think: www.circuitbread.com/tutorials/bridge-full-wave-rectifier-operation
      TH-cam doesn't notify me of second responses for some reason, so if you have any follow-up questions, I recommend putting a question on that TH-cam video or even jumping on our Discord channel.

  • @mahamadfakhradin
    @mahamadfakhradin 2 ปีที่แล้ว

    EXP. NO.6
    EXP. Name: Center-Tapped Full-Wave Rectification
    OBJECTIE:
    The purpose of this experiment is to convert AC voltage to DC voltage and to demonstrate the operation of the center-tapped full- Wave rectifier and recognize a full-wave rectified sinusoidal voltage.
    EQUIPMET:
    1. Digital Multimeters
    2. Breadboard
    3. Step-down center-tapped transformer (220V/12Vr.m.s)
    4. Dual-Channel Oscilloscope
    5. General Purpose Silicon Diodes 1N4007
    6. Resistor 1kΩ
    1. Theory:
    The rectifier is circuit that converts the AC input voltage into a pulsed waveform having an average (or DC) value.
    Types of rectifier circuits are: a- Half -Wave Rectifier Circuits b- Full-wave rectification.
     A center-tapped (CT) full-wave rectifier
     Full-Wave Bridge Rectifier
    The full wave rectifier converts both positive and negative half cycles of the input AC signal into output pulsating DC signal.
    Center tapped full wave rectifier:
    A center tapped full wave rectifier is a type of rectifier, which uses a center-tapped transformer and two diodes to convert the complete AC signal into DC signal.
    Figure (1) shows a schematic diagram of a full-wave center-tapped rectifier uses two diodes connected to the secondary of a center- tapped transformer. The transformer is useful in electrically isolating the diode rectifier circuit from the 220V AC source, and also is used to step-down the input line voltage into a suitable value according to the turns ratio. The transformer’s turns ratio is defined by:

    Where Vp is the r.m.s value of the transformer primary winding voltage, and Vs is the r.m.s
    value of the transformer secondary winding voltage. In the circuit of Fig.(1), The voltage for
    Ac source is 220 V(r.m.s)
    Figure (1): The Center-Tapped Full-Wave Rectifier Circuit

    The Input voltage is coupled through the transformer to the center-tapped secondary. For the positive half cycle of the input signal, the polarities of the secondary winding voltages are shown in Fig 1. This makes the upper diode D1 conducting and the lower diode D2 to be reverse-biased. The current path is through D1 and the load resistor RL. For the negative half cycle of the input voltage, the voltage polarities on the secondary winding of the transformer will be reversed causing D2 to conduct, while reverse-biasing D1 .The current path is through D2 and RL. Because the output current during both the positive and negative portions of the input cycle is in the same direction through the load, the output voltage developed across the load resistor is a full-wave rectified DC voltage as shown in Fig.(2).
    Figure (2): Waveforms of the Full-Wave Rectifier
    Input peak AC voltage (Vp (in)) can be calculated as:


    The peak value of the output voltage is given by:

    In equation (3), VK it was assumed that the voltage drop across the silicon diode is 0.7V when it conducts.
    It can be verified that the mean (or DC) value of the output voltage is given by:

    Mean or dc output current is given by:

    2. Procedure
    a) Connect the circuit as shown in Fig. (1).
    b) Draw the input signal voltage waveform (A.C.) voltage, and calculate the pick AC voltage (Vp(in)), time (T), and frequency (f) by oscilloscope.
    c) Draw the output direct pulses voltage (D.C) voltage, and calculate the maximum output voltage (Vp(out)), time (T), frequency (F), mean (or DC) output voltage (Vdc) at D.C. position of oscilloscope.
    d) Measure the direct output voltage (Vdc) and direct output current (Idc) by multi-meter.
    3. Calculations
    From the practical results of this experiment, calculate theoretically the following:
    a)Vdc b) Idc c) Vr.m.s

  • @김동영-i5v5t
    @김동영-i5v5t 3 ปีที่แล้ว

    I understood Center-tap rectifier is Vp(sec)/2 and Bridge rectifier is Vp(sec). So, I think that Bridge Rectifier had no loss of Vp than Center-tap Rectifier. For this reason is Bridge Rectifier more efficient than Center-tap Rectifier ?

    • @CircuitBread
      @CircuitBread  3 ปีที่แล้ว +1

      Actually, if anything, the center-tap rectifier is more efficient as you only have the voltage drop over one diode, not two, as well as the slightly smaller component count.

  • @stellageorge1054
    @stellageorge1054 4 ปีที่แล้ว

    Can we use a capacitor to filter out the fluctuating output volatage.. ?

    • @CircuitBread
      @CircuitBread  4 ปีที่แล้ว

      Yes, absolutely! That is what is typically done. Just put a capacitor (or 2, of different chemistries and values ideally) in parallel with the load.

  • @roselynnalano1946
    @roselynnalano1946 4 ปีที่แล้ว

    Please tell me how to calculate the Vout in half wave rectifier if i have a 4:1 ratio.

    • @CircuitBread
      @CircuitBread  4 ปีที่แล้ว +1

      Hey Rhobic, I recommend you check out the half-wave rectifier tutorial, as that will help you a lot more than this one will. www.circuitbread.com/tutorials/half-wave-rectifier-in-a-power-supply However, very generally (and imprecisely), your output would be ~1/8 of your input voltage.

  • @bigdividends5487
    @bigdividends5487 3 ปีที่แล้ว

    I want to create a powerful electromagnet, but I have no idea how to build one or map it out in a drawing or on a circuit board which is the actual goal. I was wondering if you had an email so we could discuss this further?
    So far what I've come up with for the circuit is as follows:
    1.)"Step Up Transformer", the reason being I want to increase voltage, I know it drops current. Also this is a DC source, 9v battery 0.31amp hours. 1:4 ratio 10 loops - 40 loops. Primary Voltage= 9, Secondary Voltage= 36. Primary Current= 0.31 amps, Secondary Current = 0.0775 amps.
    2.)"Oscillator", I want the current to go back and forth as many times in a second to increase the strength of the electromagnet, I'm assuming that by increasing how many times the current runs through the loop I will be increasing the overall current to the electromagnet. For example, a constant current of 2 Amps over a span of 1 second vs.2 Amps at a frequency of 30 Hz is 60 Amps in 1 second, or that's how I see it in my head could be wrong.
    I was thinking of an LC oscillator; with a 10mH(10x10^-3) inductor, 20uf(20x10^-6) capacitor, and a 10-ohm resistor, the reason for the resistor is the impedance would b "0" without a resistor because the XL & XC(22.36) equal "0" when subtracted and V/0 cant happen. With a 10-ohm resistor, I-RMS is 3.6 A.
    3.)"Transistor", NPN(BJT) I assume would be the correct type to use. The reason for this is to amplify the secondary current and another to amplify the frequency of the "Oscillator"; the resonant frequency is 355.88 Hz. The goal is to have a current higher by a factor of 3.5 times the secondary current and frequency higher by a factor of 3.5 times the resonant frequency. I also learned recently that by increasing the frequency we increase inductive reactance and lower current, so I don't if it's possible to increase the frequency and current, I don't want to increase the resonant frequency but I want to increase frequency overall and I don't know if those two are actually separate. But even if by increasing the resonant frequency we would lower the current couldn't I just amplify the current by a higher factor to overcome the inductive reactance?
    4.) "Center Tapped Full-wave Rectifier", the reason for this is so the current is still pulsed but in one direction to keep from switching the polarity of the electromagnet which would weaken it.
    Now maybe other components are needed even multiple of the same component like the transistor or oscillator, but I wouldn't know that my knowledge is minimal. So if you could shed some light on this or help in any way it would be appreciated.

  • @shaikirfan7012
    @shaikirfan7012 3 ปีที่แล้ว

    What will happen if we use a normal transformer instead of centre tap for full wave rectifier??

    • @CircuitBread
      @CircuitBread  3 ปีที่แล้ว +1

      Hi Shaik, we have two tutorials on that:
      A conceptual review - th-cam.com/video/quyqtaKIr78/w-d-xo.html
      A practical example - th-cam.com/video/dNi_T0P5TLk/w-d-xo.html
      Hope that helps!

    • @wendellhammond7853
      @wendellhammond7853 3 ปีที่แล้ว

      First what the ring is a normal transformer one that had good parents and went to good school with an average IQ center tap is as common as bird shit . did you watch the video . did you listen .

  • @filijavilija
    @filijavilija 2 ปีที่แล้ว

    Please just tell me what the voltages are?

  • @thebatprince2398
    @thebatprince2398 3 ปีที่แล้ว

    Identical to that dude from VTM right?

  • @nataliebesher7287
    @nataliebesher7287 4 ปีที่แล้ว

    hello thank you so much for putting this video i want to ask what are the advantages and disadvantages of Full-wave Center-tapped Rectifier ?

    • @CircuitBread
      @CircuitBread  4 ปีที่แล้ว +7

      Hi Natalie, off the top of my head, I'd say a full wave bridge rectifier is going to be smaller and cheaper than a center-tapped. Even though you have less components, transformers with a center-tap tend to be a little more expensive, but at the same time, they're fairly common and may be something you just have lying around. On the advantages side, with a center tapped rectifier, you only have half the diode drop, so you'll get a little more voltage out of your input. There's probably some other differences that I'm not thinking of but those are a couple!

    • @jbmagx
      @jbmagx 3 ปีที่แล้ว

      If you’re working with an Audio Amplifier that requires split power supply, it’s much easier to make a split power supply with center-tapped rectifier :)

  • @surafelyirefu6764
    @surafelyirefu6764 4 ปีที่แล้ว

    Can we connect voltage regulator with center tap rectifier

    • @CircuitBread
      @CircuitBread  4 ปีที่แล้ว

      Hi Surafel - yep, you definitely can! We go into the most depth on making a power supply in a half-wave rectifier tutorial we did, but the same principles apply. You can check it out here: www.circuitbread.com/tutorials/half-wave-rectifier-in-a-power-supply

  • @samuelpowell87
    @samuelpowell87 4 ปีที่แล้ว +1

    Thanks ...

  • @autonomousindividual7780
    @autonomousindividual7780 2 ปีที่แล้ว

    If you can follow at this speed first try you already know it. Why the rush?

  • @marktunes77
    @marktunes77 ปีที่แล้ว

    You got the current direction wrong at 2:06. Current cant travel through the anode of a diode.

    • @CircuitBread
      @CircuitBread  ปีที่แล้ว +1

      I just reviewed and it looks right at 2:06. Also, current can *only* flow from the anode to the cathode of a diode (with the exception of reverse leakage, breakdown, zeners - none of which we're considering here). Are you mixing up electron flow and current flow?

    • @marktunes77
      @marktunes77 ปีที่แล้ว

      @@CircuitBread weird, my professor specifically said current cant travel from anode to cathode, that it is a check valve and current can only travel from the cathode and out the anode. Im going to have to check this out. Thanks for the info

  • @runningbaum9430
    @runningbaum9430 ปีที่แล้ว +2

    Excellent presentation, but your speech is too fast for a student of electricity. I had to hit rewind 3 or 4 times to hear the thing. If your presenting your knowledge to a professor for a grade, excellent, you have demonstrated a commanding knowledge, but for us novice tour going to have to slow it down. Other than that excellent video.

    • @CircuitBread
      @CircuitBread  ปีที่แล้ว +1

      Thanks for the feedback! I have received that particular piece of advice several times now and have been trying to slow down in the videos going forward. Fortunately, the camera operator is getting better at telling me to slow down as well.

    • @sofiaangel9423
      @sofiaangel9423 ปีที่แล้ว +2

      Just reduce video speed.Use your brain🤣🤣

  • @RaymondBtce1876
    @RaymondBtce1876 3 หลายเดือนก่อน

    EEE221

  • @thebatprince2398
    @thebatprince2398 3 ปีที่แล้ว +1

    He's just skimming words