Power Zener Diodes as Voltage Regulators - Circuit Analysis & Efficiency

Подписаться 8 млн

Просмотров 215 тыс.

50% 1

This electronics video tutorial provides a basic introduction into power zener diodes and it explains how to use them as voltage regulators. It provides a full circuit analysis on the relationship of the zener voltage and the amount of electric current flowing through the diode. It also shows how the zener diode can maintain a stable output voltage when the voltage of the power source varies. In addition, it explains how to load resistance affects the performance of the zener diode. Finally, this video explains how calculate the value of the current limiting resistor to yield maximum efficient by the external circuit.
What Is a Diode?
• What Is a Diode?
Full-Wave Bridge Rectifiers:
• Full Wave Bridge Recti...
Voltage Multiplier Circuit:
• Voltage Multiplier Cir...
Light Emitting Diodes:
• LEDs - Light Emitting ...
Power Dissipation In LEDs & Diodes:
• Power Dissipation In R...
LED Resistor Value:
• How To Select The Resi...
________________________________
Potentiometers - Variable Resistance:
• Potentiometers - Basic...
LED Dimmer Circuit:
• LED Dimmer Circuit - B...
Thermistors - Temperature Sensors:
• Thermistors - NTC & PT...
Zener Diodes:
• Zener Diodes
Voltage Regulators - Zener Diodes:
• How To Make a Voltage ...
Zener Diode Solar Cell:
• How To Make a Solar Ce...
________________________________
12V LED Battery Level Indicator:
• 12V LED Battery Level ...
Reverse Polarity Circuit Protection:
• Reverse Polarity Circu...
High Voltage Surge Protection Circuit:
• High Voltage Surge Pro...
AC DC Polarity Tester Circuit:
• AC DC Polarity Tester ...
_______________________________
DC to AC Reverse Polarity Circuit:
• DC to AC Reverse Polar...
Varactor Diodes - Voltage Capacitors:
• Voltage Controlled Cap...
Final Exams and Video Playlists:
www.video-tutor.net/
Full-Length Videos and Worksheets:
/ collections
________________________________
Zener Diodes: amzn.to/3icv8dB
Resistors: amzn.to/3B2jPNM
Alligator Wires: amzn.to/3icvnFx
Disclaimer: Some of the links associated with this video may generate affiliate commissions on my behalf. As an amazon associate, I earn from qualifying purchases that you may make through such affiliate links.

Опубликовано:

9 июл 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 93

@TheOrganicChemistryTutor 5 месяцев назад

Final Exams and Video Playlists: www.video-tutor.net/

@bernardduodu5692 Год назад

He just takes his time to simplify the concept, even when it's complex. I'm really happy having such a good teacher

@fatred777 2 года назад

One of the best Zener diode videos ive run across in 10 years

@bombslab 2 года назад

I don't know why I haven't said it sooner but THANK YOU! Your videos have helped me immensely so many times in the last 2 years. I don't want to bash any of my teachers but some are not easy for me to follow. You are so incredibly clear and concise. The part that you added at the end (about power consumption) really helped me wrap my head around how zeners work.

@bot7070 2 года назад

Everytime I search something be it advanced maths - statistics - elec stuff - chem you seem to have it all. i applaud you good sir

@rodericksibelius8472 2 года назад

You are A Scholar, one of the Greatest Instructors of Applied Mathematical Engineering Physics in the WORLD. The Ivy league Engineering, Physics Instructors, Professors use 'obfuscation/confusion' through writing ideal theoretical equations on books and writing cryptic formulas on whiteboards, blackboards. Thank You for all these videos.

@chitsaegvjide 3 года назад

How does he learn all those things and explain to us? It’s just amazing

@Bravo_L 2 года назад

I wanna know how he knows so fucking much lol hes a genius

@Undertakerfan700 2 года назад

Bachelor or master in engineering

@zeerakasim6316 2 года назад

@@Undertakerfan700 My hard guess is either a masters or phD in electrical engineering? But then idek lol

@drlnvl8133 2 года назад

@@Bravo_L I bet the organic chemistry turor loves science and math. That's why he doesn't get tired studying it haha. Unlike me lmaoo

@justforkicks192 Год назад

I want to know the same thing he's a walking calculator

@MadlyMusick 4 года назад

Hello sir, all your videos are really helpful. Didn't know how easy physics is until I came across your channel. Everything just gets inside my head when I watch your videos. You are really a great teacher. Your explanation is so clear and I am confidently able to any sum. I just don't know how to show my gratitude so thought of typing this thanks a million. 😀😀😀

@WistrelChianti 3 года назад

seconded!

@sylvesternicoh3455 2 года назад

Very helpful Sir, thanks.

@e.seighart607 3 года назад

Absolutely amazing explanation. Thank you so much for this wonderful video I learned so much!

@DominiqueA63 3 года назад

Thank you so much i love watching and learning from your tutorials, i like the way you clearly explain everything,

@JoeMcLutz Год назад

Outstanding explanation of how zener diods works! Thanks a lot! 👍🏻👍🏻

@serpih 3 года назад

Finalement, une explication claire! Merci!

@Forexmotivationss 2 года назад

To be honest, This man is a legend!

@tomheeks2830 4 года назад

Thanks. just came across your channel. Some very useful learning resources 👍

@successthruknowledge 2 месяца назад

Great video. It really helped me to understand the relationships between current, voltage, resistance and the zener diode. It answered some questions of mine about the voltage near the zener diode and about load resistors.

@hakanozturk7442 3 года назад

The explanation is perfect and clear. Thank you for the video which solves many problems in my mind.

@ricardosanchez1638 3 года назад

Best presentation I have seen. Keep it simple works best. Great Job Sir!

@wchfg4187 3 года назад

Clear explanation! Thank you! Subscribed

@louco2 11 месяцев назад

Thank you so much for making these videos! Learned a lot!

@tameezdevos8868 3 месяца назад

The best zener video ever!

@Galaktica74 2 месяца назад

Cant give you enough thanks until each one of us subscribe and like all your videos even those which we didnt watch ❤

@sureshlala4525 Год назад

Nice educational description of a zener diode, I managed to lower 16v to 5 volt for a bluetooth module on my preamplifier, cheers.

@wsnippets 2 года назад

Thank you Sir : Love from Sri Lanka 🇱🇰

@sumitkamble7923 2 года назад

Thank you it was really helpful 👍🏻

@j.j.b.13 3 года назад

Thank you so much!!!

@Festus2022 6 месяцев назад

Priceless video.

@SeyavashBit 24 дня назад

Thanks for efficient lecture 🙏

@sultanahmed9694 Год назад

Amazing you are a pro teacher thanks

@Joyce-ym8te 3 года назад

THANK U THANK U AND THANK U AGAIN!!

@myspace2502 2 года назад

Awsome explanation

@MaxTornado61 Год назад

Great Video.....👍👍👍

@DiegoGomez-pk5tg 3 года назад

Thanks for the diode name!

@zuhairalsaffar7001 3 года назад

Sir thank you so much for your help ❤ 🙏 😊

@kingsleyazubuikeabonyi3612 2 года назад

I love you man. thanks

@theoryandapplication7197 Месяц назад

thank you for sharing

@antonita12340 3 года назад

thank you!!!!

@inj1979 2 года назад

Thank you 🍒

@NemerFarazdak 2 года назад

Amazing

@DeDustMet 2 года назад

at 16:10 he was mean R(L) decrease rather than increase. This way it make sense according with data from the chart

@whatifology_official 4 года назад

Thanks 😘

@alimarowah2734 4 года назад

Thanks

@Rev22-21 3 года назад

My Major was Electronic Instrumentation some thirty years ago and I learned this among many other things. What I had forgotten since then ....this video brought back to recall. Good job. But what I didn't realize were the currents between RS and RL would be different during its op; somehow that just doesn't seem right. When the Zener falls (drops) out RS & RL current is the same....am I not correct?

@pooisernest 3 года назад

I’m not in college anymore, but if I found his videos in college.. I probably would have cried and laughed spontaneously.

@MohamadAli-xd5gs 10 месяцев назад

I hope you will contuine to post helpful videos

@joew1865 2 года назад

I was taught that the correct term is "potential divider" rather than "voltage divider". However, I think my teacher was really just splitting hairs because everyone calls them "voltage divider" all over the interweb. Good video 👍

@B1NT0N Год назад

It's the same thing. Voltage is just a short for the difference between 2 potential voltages

@logandihel 3 года назад

Great video, really informative, but you have a mistake when calculating efficiency. With Rs = 1k and RL = 747 ohms, Rs dissipates 15.92 Watts, while the RL dissipates 12 Watts. While it is true that your Zener diode did not lose any power, your overall efficiency is just 43%, since the load only consumed 43% of the total power into the system.

@SaturnAR 2 года назад

I'm sorry but you're also wrong. P=VxI PRs=VRs x IRs= 15.92V x 0.01592A= 0.2534W. PRl= VRl x IRl= 12V x 0.01592A= 0.191W. Circuit total consumption is: V x I = 27.92 x 0.01592A = 0.444W from witch 0.2534W is lost at voltage regulation resistor; so circuit efficiency is 43%, yes.

@alexandersolon6548 3 года назад

Sir, I have a question on 16:02 you said that as the "R(load) Increased it began to draw more current from the ckt, and theres less avalable current to flow from the zener diode." shouldn't it be as the Rl decreased, it will draw more current since it would take the path of least resistance.

@vashtalelq 3 года назад

You are correct, when you say the load increases you refer to the current not the resistance, so when the load increases it means that it draws more current, so Rl should be less, Rl is refered to as the load resistance.

@alexandersolon6548 3 года назад

@@vashtalelq thanks for the clarification

@jaketuttleby9920 2 года назад

Great video, however is there one where RL is a variable resistor and explains how current or voltage may cause change throughout the circuit when added or removed

@maxpolaris99 10 месяцев назад

now my head is swimming with impedance matching for maximum power transfer ,Thevenizing transformer impedance reflection ! Oh no! 🤪🤪It's been 40 years since I studied this stuff!

@josephdada8434 3 года назад

Thank you very much, in fact your explanation in this video really helped me. Please can you help me with this question: Without a step down transformer, I rectified 220 AC voltage to 8 DC Voltage using voltage divider and I wanted to use 5 v Zener diode to regulate the 8v, I have tried all connections (I mean circuit) but its not giving me the 5 v, Please why is it so and does it mean I cannot use a Zener diode with such voltage divider? I will be grateful for your response on this

@jasonmiller6424 4 года назад

Can you leave a link for the Zener you used? Thanks

@josianemartinez6062 2 года назад

Check the last comment about using the higher RL value to choose an ideal Rs. If the RL drops, the zener will stop regulating. Otherwise, great video.

@syntaxerror2409 2 года назад

Hi, need an immediate response, is there any way or is it possible for us to limit or store the energy loss that from this regulator??

@alibatebi2161 Год назад

thanks for very informing video. how did you get the Vout of (12..05 or 12.03)v. .

@fromexoplanet21 2 года назад

Our lord and saviour 🙏 thank youuuuuu💖💖

@jjunboxing000 Год назад

How exactly do you calculate Vout? Because im trying to do this with a Vin of 16v

@j0mell0 2 года назад

@ 28:16 this assumes that the breakdown voltage of the zener diode is exactly at 0mA for regulation , which is not true in reality since there has to be some leakage current and minimum current(I min) to "turn on" the zener diode as a regulator. Therefore at 0mA, it's a voltage divider circuit that's regulating 12V, so the actual % efficiency is really the heat dissipated from Rs relative to the heat dissipated from RL(assuming heat from RL is for useful work to external load). P(Rs) = I^2 * Rs P(RL) = I^2 * RL % efficiency = RL/Rs ≈ 75% efficiency

@vahagnmelikyan2906 2 года назад

How can the output voltage stay the same? Wouldn't it just bypass the z diode? Is a diode acting as a traffic stopper? Like the speed limit is 10mph(voltage) for z diode and even if the output voltage was supposed to be the voltage of the battery the electrones cannot pass through the wire with higher speed, because diode 10mph speed slows them down?

@calebsaheb3159 2 года назад

what is the maximum input voltage for safe operation of zener diode?

@johnnykirkpatrick1707 3 года назад

I am having issues with problems i am facing I am asked to find the value of RS in order to find values of other components in the circuit but i am only given source voltage the Zener Voltage and wattage and the Load resistance how would I find these values of RS

@alangriff1 2 года назад

So if Im using a battery of less than 12v I dont require a Zener diode or any diode in the circuit?

@pareshchauhan6127 3 года назад

a ver good explanation video. For the selection Rl resistor if my input supply is not constant i.e solar panel is connected to the output then the value of my resistor will keep on changing. my max voltage through solar panel is 22.3 V and i am using a 3.3 V zener diode as i require voltage of 3.3 V to the mosfet for my application through phototransistor. can any one help me with this

@matematikadanfisikaterapan1344 2 месяца назад

In the real world Volt and ampere of R-load is Fix, and Zd is have impedance (For 12 Volt, Impedace = +/- 5 Ohm), and Zd have tolerance to accept i, as max power allowed ( for this, +/ - 0.25 watt), P = (id²).z., thus id not must be zero ampere. Hence the variable that must be arranged is Vs (batteray), and Rs can random fixed as product suggested. When Vs is also must be fixed than we can use comparing- op amp and bjt (or even mosfed) beside diode Zener.

@michaelmounts1269 Год назад

👍👍👍

@mastershooter64 4 года назад

organic chem i dont understand the graph of x! can you please make a video on the graph of x!???? plz also how exactly does a zener diode work? and will it still work if the input voltage is like 3k but it was designed to limit voltage to 1v?

@hadisalimi8478 3 года назад

If the (Rs) resistor's power consumption it taken account the output power percentage would be roughly 16%. it's so inefficient. Also I figured out that the internal resistor of the source is about 290 ohms which again has decreased the output power. (on 26':26")

@nathanieljames7462 6 месяцев назад

Pretty good. Last point on design was ass backwards as you would want to design for the lower load resistance which will draw more than a higher one but no big deal. I despise whole number names being used to describe decimal values though. 12.15 is NOT twelve point fifteen. It's twelve point one five. Still. Decent video.

@wolfgangboettcher3126 7 месяцев назад

Der wiederstand ist zu klein fuer die belastung

@ample982 2 года назад

11:30 15:35

@nicholaspitti8171 Год назад

10:40 15:10 17:50 19:10

@Axel-jv8wb 4 года назад

Is diode zener "suck" that voltage. I mean where the remaining voltage go?

@Lime-ne3fd 4 года назад

achraf into the series resistor

@tomheeks2830 4 года назад

I think the energy is just dissipated as heat i.e wasted. Hence the bit about efficiency at the end.

@ahmedelhadidy4768 3 года назад

30:35 you should go with lower value of RL I think !!!!!???

@dimuthupraboda 2 года назад

12:23

@lattehour Год назад

how did i landed here ... obviously not all zener diodes are the same to put it simple (not totally right) they are dependent on the area of the junction and the voltage is a weak function of current usually a logarithmic one with slight adjustments that it what makes a diode a diode