Diodes Explained - The basics how diodes work working principle pn junction
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Date: 2023-11-17
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Comments and reviews: 21
Ted
I was briefly an electrical engineering student 40 years ago at UNH. I recall seeing the depletion region in my text book, but the explanation was pathetic plus I had no chemistry background at the time. I don't know how fellow students passed the tests. Back then, there were a few EE books in the school library and no internet. I remember trying to find a book on the subject and they had all been taken out already. I quit the major and majored in math instead. Yikes that was useless without using it in engineering. in 2009 I ended up taking four EE classes at night at a local school. I was thinking of taking the entry level transistor course now that there are so many resources available.
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I was briefly an electrical engineering student 40 years ago at UNH. I recall seeing the depletion region in my text book, but the explanation was pathetic plus I had no chemistry background at the time. I don't know how fellow students passed the tests. Back then, there were a few EE books in the school library and no internet. I remember trying to find a book on the subject and they had all been taken out already. I quit the major and majored in math instead. Yikes that was useless without using it in engineering. in 2009 I ended up taking four EE classes at night at a local school. I was thinking of taking the entry level transistor course now that there are so many resources available.
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Abinaya
which lead of the diode is positive and negative? Is the strip side +ve and the blank side of the diode -ve! Why other explainers and textbooks said that +ve lead of the diode is the blank side and strip end of the diode is -ve. Why so many confusions within textbook to textbook, I want to know as an electronics student. Its because of these smallest confusions i am finding electronics difficult. Why there is no standard universal polarities.
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which lead of the diode is positive and negative? Is the strip side +ve and the blank side of the diode -ve! Why other explainers and textbooks said that +ve lead of the diode is the blank side and strip end of the diode is -ve. Why so many confusions within textbook to textbook, I want to know as an electronics student. Its because of these smallest confusions i am finding electronics difficult. Why there is no standard universal polarities.
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Dennis
In the HVAC industry we have a component known as a create-a-wire sold by Honeywell and Venstar. It is used when more thermostat wires are need for a new tstat or updated equipment and a new wire cannot be pulled. They use a diode at the tstat and another box in the furnace to, I guess interpret the signal which will bring on the corresponding equipment. Can you explain how this works. Thank you in advance.
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In the HVAC industry we have a component known as a create-a-wire sold by Honeywell and Venstar. It is used when more thermostat wires are need for a new tstat or updated equipment and a new wire cannot be pulled. They use a diode at the tstat and another box in the furnace to, I guess interpret the signal which will bring on the corresponding equipment. Can you explain how this works. Thank you in advance.
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Industrial
Hey. Thank you for the video.
I dont understand the reverse bias section. Should the electrons in the cathode not just go to the positive battery terminal and around the circuit to the Anode and possibly over the potential difference barrier to repeat the cycle?
Why would electrons just bunch up in the Cathode and not escape to the positive battery terminal and beyond?
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Hey. Thank you for the video.
I dont understand the reverse bias section. Should the electrons in the cathode not just go to the positive battery terminal and around the circuit to the Anode and possibly over the potential difference barrier to repeat the cycle?
Why would electrons just bunch up in the Cathode and not escape to the positive battery terminal and beyond?
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education
I am so confused about electron flow can someone explain. I like that he explained conventional current vs electron flow because hardly anyone does, but shouldn't the diode be placed before the LED if the electrons are actually glowing from negative to positive, or does it not matter as long as it's in the circuit?
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I am so confused about electron flow can someone explain. I like that he explained conventional current vs electron flow because hardly anyone does, but shouldn't the diode be placed before the LED if the electrons are actually glowing from negative to positive, or does it not matter as long as it's in the circuit?
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mooredelira
I looked at your video again at 6: 39, and when you had no voltage listed on the battery the current did flow, but when you labeled the battery as 0. 5V the current did not flow. Why not label the first case as a battery of 1. 5V and the second case as a battery of 0. 5V, and then reverse the battery?
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I looked at your video again at 6: 39, and when you had no voltage listed on the battery the current did flow, but when you labeled the battery as 0. 5V the current did not flow. Why not label the first case as a battery of 1. 5V and the second case as a battery of 0. 5V, and then reverse the battery?
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mooredelira
Nice description, however, there is an error at 6: 39: you say, The voltage source has to be greater than the 0. 7 v barrier otherwise the current won't flow, but you've labeled the battery as 0. 5 V and the current appears to be flowing. The battery should be labeled as 1. 5 V, rather than 0. 5 v.
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Nice description, however, there is an error at 6: 39: you say, The voltage source has to be greater than the 0. 7 v barrier otherwise the current won't flow, but you've labeled the battery as 0. 5 V and the current appears to be flowing. The battery should be labeled as 1. 5 V, rather than 0. 5 v.
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Aahil
Visual learning changes everything, the main reason people understand the concept is because of simulation, hope universities all around the globe realise that the era of LECTURES are over, and they hire people like you to teach in those universities, then only the students money will be worth it
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Visual learning changes everything, the main reason people understand the concept is because of simulation, hope universities all around the globe realise that the era of LECTURES are over, and they hire people like you to teach in those universities, then only the students money will be worth it
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Sarang
You explained nothing you don't even know how to explain so first learn that people want to know how diode works that's it,
not how thier fooking inner electrons works you didn't even show where to use and when to use you wasted 4 min in that unnecessary explaination
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You explained nothing you don't even know how to explain so first learn that people want to know how diode works that's it,
not how thier fooking inner electrons works you didn't even show where to use and when to use you wasted 4 min in that unnecessary explaination
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Billy
My name is billy and i love you guys, your voice is pleasant and i learn alot, even when i already know the topic of discussion, i ususally find something new to make it worth the watch, Im such a nerd, and i have no friends, this is awesome for ppl like me.
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My name is billy and i love you guys, your voice is pleasant and i learn alot, even when i already know the topic of discussion, i ususally find something new to make it worth the watch, Im such a nerd, and i have no friends, this is awesome for ppl like me.
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Sun
Best and detailed EXPLANATION ever I saw anywhere. I wish had you been my tutor. At 40yrs of my age having had around 20yrs of experience in the field of Electronics, I bet anyone else can better explain than this. Thank you for your input!
Long live!
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Best and detailed EXPLANATION ever I saw anywhere. I wish had you been my tutor. At 40yrs of my age having had around 20yrs of experience in the field of Electronics, I bet anyone else can better explain than this. Thank you for your input!
Long live!
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Marcus
I have one recommendation for this video. please explain a little more about conventional flow and electron flow. Your brief explanation just said they exist and not why or how they exist which is very confusing if you don't understand it.
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I have one recommendation for this video. please explain a little more about conventional flow and electron flow. Your brief explanation just said they exist and not why or how they exist which is very confusing if you don't understand it.
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Taranveer
My father is an electrical engineer and he gave me a book to read when i was 14.
Little did I understand it.
Now i am 18 and i have done my 10 + 2 (science. Getting better by watching your vids
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My father is an electrical engineer and he gave me a book to read when i was 14.
Little did I understand it.
Now i am 18 and i have done my 10 + 2 (science. Getting better by watching your vids
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Arrah
In chemistry we're taught that the valence shell is the outermost shell and it carries the highest number of electrons (even 18 electrons)
But then you say it carries at most 3 electrons
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In chemistry we're taught that the valence shell is the outermost shell and it carries the highest number of electrons (even 18 electrons)
But then you say it carries at most 3 electrons
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Kat
I watched this video after the Transistors one and I think it makes more sense to watch the Diode video first to understand the practicality of the P-Type/N-Type. Thanks for the great series!
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I watched this video after the Transistors one and I think it makes more sense to watch the Diode video first to understand the practicality of the P-Type/N-Type. Thanks for the great series!
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My
wow. First 2 minutes were stellar, then he descended into a world I did not understand one little bit of orbital shells and nucleus. Great start, but quickly turned into a PhD of science.
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wow. First 2 minutes were stellar, then he descended into a world I did not understand one little bit of orbital shells and nucleus. Great start, but quickly turned into a PhD of science.
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Lucas
so wait, since the lectron flow is the thing that actually happens, why is the resistance after the LED? won't the LED overload before the electrons get slowed down?
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so wait, since the lectron flow is the thing that actually happens, why is the resistance after the LED? won't the LED overload before the electrons get slowed down?
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Tahira
Hi Its very well explained. thank you very much for your effort. can you please post working of photodiode and light emitting diode in detail the same way.
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Hi Its very well explained. thank you very much for your effort. can you please post working of photodiode and light emitting diode in detail the same way.
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JK
Great videos, but I wish you could explained it in the normal direction, not electron flow.
Otherwise this videos would be perfect for educational use
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Great videos, but I wish you could explained it in the normal direction, not electron flow.
Otherwise this videos would be perfect for educational use
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John
What would happen if after putting a diode and effectively converting AC to DC, the DC circuit goes back directly do the AC power supply?
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What would happen if after putting a diode and effectively converting AC to DC, the DC circuit goes back directly do the AC power supply?
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Pertilious
I always thought it meant open loop as in the circuit had such a high impedence it assumed a break in the circuit
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I always thought it meant open loop as in the circuit had such a high impedence it assumed a break in the circuit
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