MAKE presents: The Diode

[Chippydip]

i need to know who you are. you need your own channel

[AJ8494030615]

So...A diode is more of a safe guard from opposite currents, right?

[PROVIDENCECITY1972]

GREAT CHANEL GOOD TEACHING THANK U GOD BLESS U

[ExplosiveBoy93]

VALVe prevents money from floating in the wrong direction!

[tradecycles]

SIR, DO U HAVE YOUR OWN CHANNEL NOW? PLZ INVITE ME.

[HexaDecimallify]

How much years you have?

[Thorfiskable]

like a BAWSSS

[raymundobuayalanoy]

What happened to your right thumb?

[axel1973w]

Is there an easy and practical way to "determine" unlabeled, unsoldered unknown diodes? Some way to find out their original parts name maybe if not printed on the casing?

[Schoening91]

I don't think there is ANY of these Videos that dont say at some point: The German ... :D

[NPP83]

@Schoening91

The Alpines(French/German etc..) and the Nordics(Scandanavia etc..) are masters of science, math and their applications (engineering). Even look at the works these peoples have produced in the arts and humanities.

[ONixaO]

whats that in his ear

[tillateful]

apple :D

[1912RamblerFan01]

Those Radio's that Recieve Radio waves using a Galena Crystal is called a Crystal Radio. I'm actually building a Crystal Radio now using a "1N34A" Geranium Diode and a 365pF Air Variable Capacitor, a Simple-to-Build Plastic-Core Inductor, and a High-Impedance Piezoelectric Earpiece. btw, Crystal Radio's were the First Radio's that were used in the 1910's, 1920's, and partially in the 1930's and 1940's. Crystal Radio's make their own power, however don't create alot of power.

[AlexxSR]

That dude is creeping me the fuck out

[fuelinjectedmaniac]

the long lost blues brother

[djkross123]

is it sad that i graduated in electrical engineering and work as an electrical engineer, yet i never really fully understood the functions of a diode up until now? in college it was kind of brushed over and we did use them in our circuits, but i just never actually understood *why*. the rectifying diodes i had a bit of an idea, but not the zener diodes.

[pprinceton11]

nice job...

i have a question,,,last day my teacher asked me ..tell me why led(light emmitting diode) glows and simple diode

>l doesnt glow,,,,but i couldn't gave the answer,,,please tell me the difference between them and why led glows and simple diode does not glow....

[GW1OII]

@pprinceton11 All PN junctions (Diodes) Emit photons some in the visible range that you can see, LED are constructed with the junction exposed under a lens, where as a simple diode is encased in a non-transparent plastic case so the photons cant bee seen. this is a simplistic overview and you must take into account the voltage across the diode junction.

[pprinceton11]

@GW1OII thanks man

[GW1OII]

@pprinceton11 No problem any time.

[mindstormsabrewin]

Make magazine videos are incredibly informative! They are well researched and the info is presented in beautifully clear language. When I was a kid I tinkered with music based electronics, but I gave up because I felt it was only for engineer types that are great at math and science. Since I never was I never got far. If only there were videos like this when I was a kid. Back then (pre internet!) this kind of instruction was reserved for people who could afford it. Kids... cherish this resource!

[g3rrar1]

DIP YOUR LIZARD



[lucasmontec]

Collin fan here!

[michael1234252]

the song at the beginning is called space oddity by David Bowie

[fabiuh991]

i just luv this guy

[mokle999]

Booooooring...

[sadlyhuman]

(Pedant warning) Great vids, but... At 5:20 "positive charge" is attributed to P-type material & "negative charge" to N-type. Not so. Both types are neutral in isolation since both doping agents and the intrinsic crystal have matching numbers of protons (+) and electrons (-) in each atom. In the extremely thin barrier region of an unbiased PN junction, P-type actually develops a slight *negative* charge; N-type a slight *positive* charge. There is no net charge at the device terminals.

[DelinquentRodent]

Rectification.

[Hanschr1]

Could you make some video's where you calculate on circuts ?

[redfire0711]

Cool sound and text.

Well done.

[jackson1426]

wat is the name of the instrumentals when he gets a brain blast?

[parisloveme]

@TheCrazyStudent try using germanium, it has only 0.3 v voltage drop.

[AndyCAgi]

Resistors, capacitors, diodes,transistors... im learning bout this stuff in school and i found it so boring there. But these vids give it a strange .... spirit that makes me understand it better... :D

[321beth321]

Diodes looks similar to resistors...

[Maker5464]

@321beth321

yeah but resistors are much smaller and they have niccer shape

[Mikej2156]

Check out some videos of The secret life of machines and check the resemblance

[MrBigTubs]

I'd love to hang out with this guy for a day, I would learn so much..I guess I'll just have to watch all of his videos :/

lol

[TheCrazyStudent]

I've heard that many diodes have a voltage drop around 0.7 volts. If I want to use a diode as a polarity protector like explained at the end of this video, won't a circuit powered with 5 volts only get a 4.3 volt supply? How do I prevent this from happening? Are there diodes available with very low voltage drop?

[rlui123]

@TheCrazyStudent try using a "point contact" diode such as a zener signal diode, all silicon junction types will eat at least 0.7 volts

[97273998]

wow thats a big rectifier XD

[MisterAlexUk]

I really wanted to see him connect a diode to the microphone he was using. I would have liked to hear what the output voltage would sound like.

[MrGeekninja]

pushing and pulling back and forth thats what she said

[shmexy030]

Cen u Replase A Diode Whit A LEd

[TechBoywii]

@shmexy030 no

[iggy151]

@shmexy030 Depending upon what type of diode it is, how much voltage is passing through it, the rating of the LED, etc.

[MrGeekninja]

5:20 DOPING!!!!!!

[nikonfseries]

David Bowie reference = Win

[treee121]

hi.i have a brain ingury watch you vido im about a 5 th grade brain level im amaze at in trist i have in show mboston15@aol.com thank yuo

[itzjoeyppl]

zener... weener... :]

[gusmerchan]

great vids! please explain how that connecting grid works ... :D

[3308471]

38 People don't have bitchin' sideburns....

[sciman001]

@3308471 39

[454charing]

@3308471 fuck uuuuu shitsssssssssssssss fuck ur mom

[DairyProduct]

@3308471 ya, I like this vid, but the only bitchin side burn I have runs down my rectifier diode.

[kno3nitro5cole]

ok what song was he singing in the beginning

[andrewrobotbuilder]

@kno3nitro5cole It's called 'Major Tom' by David Bowie

[kno3nitro5cole]

@andrewrobotbuilder thanks 

[Alexxxcompa]

Genius.

[remzi133]

Thanks, now i know more.

[ECHQ23]

Not five because to make AC to DC u need 4 diodes and/or a bridge rectifier.

[123456cephiro]

XD back and forth

[carfansunited]

Hey, mr. Collin, you are THE BEST!

[pikachuthesquirtle]

the indian dude was white?!

[mindsoulbody]

@pikachuthesquirtle no. He wasn't white as most indians aren't. While he was alive Bangladesh, India and Pakistan were all ONE country. Good old time. Anyway...he was also the 1st person to discover and prove that plants are living beings just like animals. The machine that measure plant growth is also invented by him. he also designed a workable radio but refused to do patent as he was against money and fortune. Thus eventually Marconi was credited for it. For more info check other sites.

[megamarko94]

can diode convert dc to ac

[trance183]

@megamarko94 Sorry but no. :(

[Dark0Lord7]

@megamarko94 No. You need a special circuit with a timer for a perfect AC output.

[TenFoldDamage]

@Dark0Lord7 Actually it can, but it isnt PURE dc

[coilsinamotor]

DOOPPING!!!

[shotox21]

Best freakin video on Youtube.

[EdevoK]

can any1 tell me the sound which plays when Make: comes on the screen that is from 1:00 to 1:10 !!!!!!!

[5Spekter]

gettting addicted to your videos.

[TheGuyInUrCloset]

One thing he missed is how they work. The reason a diode only conducts current in one direction, is because the cathode (negative) must have a lower voltage that the anode (positive) for it to conduct current. That is why diodes have something called a voltage drop, which is required to stop it from always turning itself off. This function can be used in some switches, such as a switch so a device can run off of a wall outlet, and a battery, without running both at the same time.

[IRONMAIDENFAN2006]

this guy is creepy... i mean loosing his hair glasses hes probably a child predator 

[AxelTiger]

is the p-type and N-type materials used in Diodes the same, if not similar to those used in 'pnp' and 'npn' transistors?

[thewii552]

why is he wearing earplugs?

[BritishRider]

You might have all of that knowledge but you still don't have a mustache. :P

[jbrenes]

Content wise: Could go a tad faster in explanations....but ok.

Film Making wise: Good Quality Video, proper mood music, Great viewer experience!

[TheVideoVector]

y r u wearing earplugs?

[MandrewP]

If I'm not mistaken, isn't that diode installed in reverse? It looks like the cathode is connected to the positive supply and the anode is connected to the chip's positive supply terminal.

[GW1OII]

@MandrewP Its called a reverse protection diode, it shorts the supply when the supply is connected the wrong way preventing the rest of the circuit from the wrong polarity supply. 

[nekk011]

College students should watch these videos before they learn this stuff. I'm sure it would make it quick to comprehend.

[3308471]

@nekk011 I do. I'm in college for this, and I still watch these videos. I just love the Collin's lab videos, as well as these because they help me explain things I understand in laymens terms.

[Lili0000007]

@nekk011 It does =D

[Ap0ph1s15]

@nekk011 thats wot im doing xD

[thund3rpantiez]

@nekk011 We do on my school =)

[iamextremelyawesome]

you look like those dudes that come to my door. who are you?

[radocool1]

half-wave rectifier...

[taz3000nice]

Why is wearing ear plugs????

[grendelee]

LOL he looked genuinely surprised at the beginning

[philcares]

its funny because the play button in the bottom left is the symbol of a diode.

[mziskin]

@philcares thats why it is funny?

[ufoskies]

Test a natural Diode "Pechblende" Crystal DIODE ! Like in Detector Radios !

[TheRobotsofDawn]

This dude is my hero

[rainbowsalads]

@TheRobotsofDawn yeh be cool if he made more, a dvd even!

he explains things just at the right speed.

[jlmknight]

thanks soo much for the help

[xvirg]

yes, I liked it, especially the part about doping.

[hunterisneverhunted]

excellent vid but it would be much usefull if the working is explained more elaborately

[aeondesign]

@hunterisneverhunted I agree that the explanations are extremely superficial. I would like to see them give a little more theory.

[robie04043]

Ask me this 5 years ago, i wouldnt understand. Snap!, i kinda understand now, because Im from maine, do some research....

[canithappen]

amazing!

[bluemagictube]

Didnt understand the last example at all on that breadboard.

[tennisthehilife]

I think I see it.

1st row(red) = chips positive terminal

2nd row(blue) = voltage source

Diode is between 1st and 2nd.

So circuit goes:

voltage source -> diode -> chips positive terminal -> rest of circuit -> then back to ground/source

[benjamander]

It's simpler than that. It's set up so that if someone connects the battery backward, all the electricity flows through the diode and not the circuit.

[OzClawhammer]

Outstanding..love the tie!

[unsoloviaje]

can you make a series on magnets. then a series on magnets AND electricity together and how they work together.??

thanks science dude!!!

[RadiantSynergy]

I love the sideburns. Issac Asimov would be very proud!

[XftumchX]

@RadiantSynergy I was thinking more along the lines of Wolverine.

[321beth321]

@RadiantSynergy hahahaha he does look like him!

[Greeneyehawk13]

awesome, thank you so much

[BRADD500]

cool

[0Sebek0]

my question is, how a diode emits light?, is it just by the electronic promoting of the semiconductor or does it implies something else?. How is a neodymium laser diode built in?

[pinochska]

the phosphorus included in he LED makes it emit light, phosphorus and light get along very well

[Tharnel]

AND Fire! ;D So true (what he said above)

[codecxo]

@pinochska & @0Sebek0

No Phosphor is in an LED. Usually just silicon carbide or some other semi conductive material.

[pinochska]

i beg to differ my friend.. why dont you do a google search on  LED Phosphors / Luminophors and then come back and write the same WRONG correction :)

[GW1OII]

@pinochska the Luminophors you refer to simply convert the colour of the light that is emitted from the led junction, giving a different colour light, the LED its self doesn't contain phosphorus materials.

[pinochska]

@GW1OII "A luminophore is an atom or atomic grouping in a chemical compound that manifests luminescence." the definition seems pretty clear to me, but anyways... and by the way the LED DOES conatain a luminophore so.... there, give me a source please, otherwise just keep reading on mine

[GW1OII]

@pinochska ..

[GW1OII]

@pinochska As you can see from the patent the Luminophore is actually the material surrounding the LED in order to change the colour of the light produced by the LED junction itself. wipo.int/patentscope/search/en­/WO2011004961

[pinochska]

@GW1OII "The luminescent substances are used as radiation converters to convert a higher-energy primary radiation, for example, ultra violet (UV) radiation or blue light, into a longer- wave visible radiation and are therefore preferably employed in corresponding light-emitting devices." invisible form of light is converted to visible light by the luminophore how can you say that it is not a part of a light emitting diode? its one of the most fundamental parts...

[GW1OII]

@pinochska Your simply not understandingly what is being said, the LED that is a standard PN junction not a OLED or other derivative , most LED's depending on the PN material in use, Ga etc.. emit visible light the phosphor / luminescent material your referring to is added AROUND the junction only if a colour change is required eg. to produce white light from blue. By manufacturing different types

of crystals having different natural energy levels, various colors of

light can be created.

[pinochska]

@GW1OII not only for a color change... it is added to create the light.. to bring it from a shorter wavelength to a larger one... an led will NOT emit light just by having a pn junction come on

[GW1OII]

@pinochska your understanding of the physics involved is obviously limited, I suggest you Google the operation of a pn junction and generic crystalline based LED's I repeat not OLED's or the derivatives.

[GW1OII]

@GW1OII ..

[ReaverRism]

@pinochska you are the worst scientist ever...

[pinochska]

umm yeah im no scientist. but what i wrote is true my man.. so there

[Madness832]

Love his sideburns! LOL

[VALKIR4636]

yeah, he looks like a butler lol xD

[clubpenguin1help]

Neat Neat Neat!

[climatechangeaction]

love your video. could you please make one explaing how bypass diodes work in a solar circuit?

[DomDollx]

good stuff. thnx

[luftman10]

excelent video . i have a question i made a solar panel of 200 watts what kind of diode i have to used ? thank you

[jodex96]

I think that a bridge rectifier of some kind would work best. Ask from the salesman at your local electronics store to give you the right one.

[ellboy10101]

whats that machine called in the start of the video?

[ratbag359]

a Oscilloscope

[k0namiman]

Oscilloscope

[luckviewer777]

what rectifier diodes shoud i use to prvent 5v current from going back

..............

and which side lets the current flow

[need4speed402]

hay! i like your videos... can you make one about an reelay?

[nepssis]

Some (maybe most) chips have built-in diodes as protection so there is no need for external diodes. Placing external diode to chip's bias can produce voltage drop, which isn't good ;)

[sabri1rk]

awesome,great ,superb.........

[SnottyAust]

Good stuff, ta

[AxelTiger]

Thanks for the info mate! very helpfull!

[Timaiii]

I like your videos! Good job!

[xsonicbladex]

What song was that?

[scripttester]

Space Oddity by David Bowie

[xsonicbladex]

thx.

[scripttester]

Np....its a great song

[eatmycakeshow]

Great info!

[AximKK92]

You should definitely do more of those component-videos.

For example, how bout a fransformator?

[303patrick]

What's a Fransformator?

[AximKK92]

some kind of typing fail ^^

i meant a Transformator, sry

[303patrick]

Ow oke

Well that would be cool, yeah!

But also he should do a NTC or PTC, LDR or even a Amp or Volt meter!

[GeorgeVanAken]

You have explained a diode in simple to understand terms. I am very impressed. Dude, you rock! Going to watch the other four now!!

[nycpntr]

Thanks for all the videos collin!

[mathman47]

The only thing lame about this video was the music. Better off off. He did an excellent job explaining the who, what, where, and when of the diode.

[adj789]

ja joo vant to tuch mine zener!?

[bendover91210]

the editing is really annoying

[imemutch123456789]

why does this video (and all videos made with this person) look like they were made in the 60's in video quality and his fashion lol

[1ucasvb]

It's called STYLE.

[CascadeZ]

nerdcore

[gaussman08]

heheh i think he's not a nerd this guy have a very good style

[CascadeZ]

if not nerd then super-geek :P

[gaussman08]

he have a unique style that i love it :)

[amandeep1]

Wow this guy is soo bad. Based on your monotonous voice it sounds like your reading this off wikipedia and you have no actual interest in the subject.

Make magazine if you are going to make such videos please hire people that aree actually enthusiastic that actually care and show practical uses of diodes instead of giving a history lesson.

[goofiaa]

What are you talking about man ? I think it's very good way to show for newbies how it works in practical use. Its good idea to hint who invented each component, even as an interesting detail. Look on other "Make presents", for example "Capacitor" episode in which Collin made a real working model of cap and showed how it worked. Maybe you need a special qualified and enthusiastic teacher, but take a look at their team and watch more videos, then you'll be able to assess their job. Peace.

[MrfixitRick]

Cool!

The un-powered diode crystal radio circuit, with only a resistor, a couple of capacitors and a coil added to the diode, is capable of incredible feats.

The same basic diode radio circuit, plugged directly into a computer, can act as an EM field detector, a light-sensitive discriminator, or even a microphone.

The circuit can be also tweaked to act as a beta brain-wave modifier to allow better use of alpha and theta brain wave states.

Check out my Spirit Radio playlist for experiments.

[Alkatross]

hey, good info, thanks for the lesson

[yescharliesurfs]

pleez!!! dont sing!!!!

[j7512]

LMFAO!

[sach3]

you look like a Ferdinan!!!!

[cemx86]

Rather than a history lesson, I would think that showing practical applications would be better. The pre-venting reverse voltage idea was good. Maybe starting with shown a AC sine wave on a 0-scope, then add a diode and show the clipped wave. Then add three more to make a bridge and show that on the scope (then add a cap!). My $0.02.

[FlockAirPilot001]

What is the machine hes using in the begining?

[Destructos]

An oscilloscope.