Full-wave Center-tapped Rectifier Tutorial | Basic Electronics

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Table of Contents:
0:26 Difference between a center tapped and bridge full-wave rectifier
0:47 Transformer requirements - need two windings on the secondary side.
1:50 How the center-tapped rectifier operates
2:45 Solving for the average value of a full-wave rectified voltage
2:54 The peak output voltage of a center-tapped full-wave rectifier
3:23 Finding the Peak Inverse Voltage (PIV)

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[electronicsguy]

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

[amittyagiat]

Excellent presentation without any jarring music 😊👌👍

[VasundharaAroskar]

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

[ericguillot]

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.

[ilkeryasinyildiz]

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?

[UnbelievablyWrong]

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

[gustavofoss]

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.

[dalenassar]

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]

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]

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

[the.commie.hunter]

Sir that'll happen if we move the centre tap towards either of the diodes

[randint]

thanks so much for the video! love you

[belongstozorax]

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.

[carson]

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

[panthopothik]

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?

[roselynnalano]

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

[stellageorge]

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

[nataliebesher]

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 ?

[bigdividends]

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.

[filijavilija]

Please just tell me what the voltages are?