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- เผยแพร่เมื่อ 27 ส.ค. 2024
- Find more information on: www.resistorgui...
Resistors are passive electrical components that limit electric current. This video explains in an easy way the most basic background to help you understand resistors and use them.
6:10
You said 'the colour band is grey' but highlighted the green band on the table. I think it would be better if you put a caption for correction because I see many people bewildered by the contents of the video. Other than that, pretty well explained. Great job
that's true
7 years on bro....you're sh*t's still important ✌️
Very nice lesson. Easy to understand and nicely put together :D Bravo!
Wow this was way more in depth than I thought it'd be. Thanks!
You should include the voltage drop across the LED when calculating the resistance required to produce 30mA. Typically, red LEDs operate at 2V. So the calculation should be (9V - 2V)/0.03 = 230 ohms. However, with 300 ohms, the current will be 23mA, which is better than 30mA, because you should never operate any device at its rated maximum.
you should cheer for a better team
this 6 minute video explained more than all of grade 9 science.... Thank you!!!!!!!
Thankyou :)
+Sylvie Ruland hi hello
you aur so sexy girl
@@sylvieruland8697 Science sucks
The LED part is inaccurate, since you didn't take into account the voltage drop on the LED. A 3mm red LED has about 1.7V drop across it, so the drop on the resistor is about 7.3V. The correct equation is R=7.3V/30mA, so R=243.333Ω
+yotam amit Yep, i noticed that too.
I think he was trying to simplify it
thanks for your video.
Lovely video content! Apologies for the intrusion, I would appreciate your thoughts. Have you considered - Qanayce Wiyulian Equalizer (Have a quick look on google can't remember the place now)? It is a good one off product for unveiling the technique to repair your electronic items without the hard work. Ive heard some interesting things about it and my work buddy after many years got excellent results with it.
Content 👍👍👍 watching from Indonesia 🇮🇩🔔✅
Thank you for making it understandable for someone like me with no knowledge of electronics.
Hi there
"the third band is grey.." picks the green one -_-
+Niels Langeweg He's color blind
+Niels Langeweg Just stay away from the light
exactly. wtf is going on?
also said it has x10k.. lol.
lol
Great video; however, I see two mistakes right away. 1st one is the LED itself, its hooked up backwards, shorter leg is usually/normally always negative. The 2nd mistake is that he chose the wrong value of the resistor's Multiplier, even though he did say the right one (he chose green instead of gray).
@Brian,
I am starting my first project. I need someone with knowledge to review my project contents and recommend missing/needed resistors, etc to complete my project to fully function able in all areas. Can I resource you? I have a handicap that limits the way/method I obtain knowledge. Hence the “first” time, I need guidance/ assistance.
I am determined not only to complete this project… but obtain. Skills to complete a total of 250 projects on my own….later on.
Most Humble Appreciation! Alton
It looked better in this way,this video is more theory than practical
faith in humanity restored. thank you for your to the point 0 fluff tut. Your a great speaker
At the 2:28 mark you converted the mille amp ( 1/1000th ) of 30 to 0.03 to give 9/0.03 . Others may not have caught that if they were just checking the tutorial out.
whats a mille amp???
I'm glad you explained how resistance affects the "LID" ;)
This version of the essential resistor was designed and developed in 1959 by Chicago inventor, Otis Boykin.
Mr. Boykin would later become better known for his next invention, a control unit for the pacemaker, which used electrical impulses to stimulate the heart and create a steady heartbeat.
Nederlands accent herken je altijd!!!
Toch goed geprobeerd.
Ja, zeker weten dat meneer weerstand een nederlander is. Tenslotte sluit hij ook nog de LED verkeerd om aan.
thank you so much! loved the example with the light - made me understand why its important to have a resistor
Good summary of what a resistor is and the various types available.
Thanks, from now I start to learn electronic
Finally i got to know about the resistors thank you 🙏
th-cam.com/video/TqWyt0Fz0V8/w-d-xo.htmlsi=g4C8f389oPLv2irO
I got a little light-headed trying to absorb all that. Actually for a guy as dumb as me, it made good sense. I now have a basic understanding of what resistors are. Thanks.
would you please tell me if you know that in the 6 minute and 9 seconds you; it seems make the grey band calculate with a green value .....if this is so then you may want to indicate a correction and give the video the high standard you have with the rest of it , for the sake of those who are less able to deal with errors in their self educating. I appreciate the hard work you all put into the priceless videos on youtube in this field. thanks john
6:07 Has a grey band, points to green, says it has a multiplication factor of 10K...
I was going to comment that
Mistake over a mistake 😂
fuck man, totally. lol.
Man thank you for clear my mind on this resistor presentation
Thank you, this video made some things very clear!
Well done!
np
Yes, when you connect two or more resistors in series in a ckt, (i.e R1 & next to it, R2, R3), each resistor values (ohms) "R" are added, as to find Equivalent Resistance Requ= R1+2+R3, while calculating the current flow I=V/(R1+R2+R3)=V/Requ. The reason is , the voltage potential at the first resistor arriving at the resistor R1 is taken as Voltage for calculating current flow on each resistors in series. Hence, the current flows on all the resistors will be the same, but with drop in voltage.
No I don't think that is correct.
By ohm's law: V=(A)(R)
The higher the resistance, if the amperage stayed the same, voltage would also rise proportionally; obviously, that is NOT what happens, resistors do not add voltage.
If the voltage stays the same (given a potential differential = X from a given source like a battery) and if we change the value of the resistor, then what must change is the current to make the numbers add up:
V=10 R=10 , 100 , 1000 A=X
1. 10=(x)(10) A=1
2. 10=(x)(100) A=0.1
3. 10=(x)(1000) A=0.01
The higher the resistance = the LOWER THE CURRENT.
Excellent video. I learned a lot. I am 67.
Thank you for this video, i gained lot of information about resistors which I could also share to my students
Awesome video! The LED example made me understand it better. Thanks a lot
Thank you very much that was very grateful short video basic knowledge
thank you so much, now i am pro because i learn lots of thing from your video
Isn't the longest wire the positve side of the LED?
Kim Pacolet yes
Micco Millchris Reyes
so in 2:46 he should've connected the wire differently ?
hello brother resistor connected any way any side in only series the above circuit diagram is series diagram
The led should not work he has to flip it over and it is not called a lid
if you take the example of a hydraulic pipe then when the flow of the water is resisted hence creating pressure and the same happens with resistors then shouldn't the voltage shoot up in relation with the flow of electrons? just like when you press the tube of a vinyl pipe when water is flowing through it?
I enjoyed your video. It was very helpful. Thank you!
Hi there
Everything Perfect except the green color band was actually grey and the green should have been 100K not 10 K . Thank you for this video. It helped a lot.
Thank you. I was able to understand the explaination easily. Good Video!
thanks
Sir really good .Very clear voice easy to understand. Thanks
I answer to your 2nd query first, Ampmeter is connected series to resistor for measuring the current being passed by resistor.When we say 2A is going through,i.e I=V/R, it's current Amp value = voltage drop (Vs-Vf)/Ohms measurement.Vs=voltage source(may be 9v or 12v),Vf=forward voltage (the volume going to be allowed to consume by device/simply say device rating voltage).This 2A current is allowed by the resistor.Now, for your 1st query, resistor is not controlling the speed of electrons.
Thanks my exams are in 5 days 💀
You might want to recheck your chart. You meant grey which should be X 100M.
Hello brother
Thanks For your information. This Information will help me
thanks, very interactive and clear 👍
Your teenage son when its time to clean his bedroom, mow the lawns or wash the dishes.
Theres something wrong in this video but we can adjust for simple error ...make sure to be more strict in posting video to help more newbies but u explain well about the topic sir god bless and more power...
Little criticism - The long leg of the LED is positive - therefore should be hooked up to the red line drawn from the battery - am I right?
The flow of electrons occur from the positive lead to the negative lead so in order to protect bulb we must add resistance before the electricity reaches the led.
In a series circuit which is what is shown in the video the current is the same for all components in the series so it doesn't matter if the resistor is before or after the LED.
My girlfriend is a resistor ;-(
wa bro
i can't stop
Alcohol's conductivity reduces resistance!
Ha ha lol
This was great, been searching for "what is a resistor pack?" for a while now, and I think this has helped. Ever heard of - Henucas Panrooklyn Equalizer - (should be on google have a look )?
It is a smashing one off guide for discovering how to repair electronic devices like a pro without the headache. Ive heard some interesting things about it and my mate got great success with it.
My ex
Thanks for clearing my doubt.
Thank you so much over a year I am trying to understand this but, you did it to get me understand; by diagram examples with water pipe. | once again thanks___
Thank you. That was brilliant - explained simply and clearly. Always thought resistors looked like Liquorice Allsorts. :)
This is amazing. I have a question though. why does a resistor have to be on the positive lead?
I understand that the assumption of the current direction ( from +ve to -ve ) was a mistake bcuz scientists when they were first working with electricity, they didn't know about the structure of an atom. Shouldn't we adopt the correct direction then to prevent the LED from burning out? which is from -ve to +ve?
(Thank you in advance for any help you might be able to provide)
Hi, when a current enters the resistor does it decrease the amount of electrons and we get
less electrons comes out of resistor (at the other end) OR it (resistor) decreases the speed
of electrons and we get slower electrons coming out from the other end of the resistor?
Also when we say that 2A is going through resister R , does that mean before entering the resister or after the resister?
Please help
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The analogy with water flow was incorrect. Making the tube more narrow will not reduce the current, but speed it up in that area. And the current will return back to what it was when the diameter of the tube returns back to its original value. Also, the pressure on the left is the same as on the right. It's the pressure in the middle that is reduced. You would be better off using a water wheel to represent the resistor. Somebody please correct me if I'm wrong.
Go to the hardware store. Buy two feet of PVC pipe with a 4 inch diameter, and two end caps. Drill a 3 inch hole in one of the end caps, and an eighth-inch hole in the other. Put the cap with the 3 inch hole on the pipe. Orient the pipe perpendicular to the ground, cover the hole, and fill the pipe with water. Use a clock, and record the amount of time it takes for the pipe to drain. Repeat with the 1/8" inch cap. Voltage in this case is supplied by the earth's mass. Gravity acts on all of the water at the same time and "wants" it to get through that pipe. The voltage therefore never changes, but the flow will. If you do this experiment, you will see that decreasing the size of the hole increases resistance of flow, resulting in less volume exiting the pipe in a given second. All a water pressure regulator does is change the size of a hole (or diaphragm) based on some input. The flow of water is a great analogy when it comes to explaining the relationship between voltage, current, and resistance.
vegasbryan I hear what you’re saying, and you’re not exactly wrong, but your example isn’t analogous to the situation at hand. Filling pipes with water and letting it fall out of holes of different diameters doesn’t include a constant mass flow rate as an example with connected pipes does.
The amount of water going into a section of a pipe is the same as the amount of water coming out. Therefore if the section’s diameter were reduced, the water would have to flow faster (increased current) in order to keep a consistent mass flow rate. Even with a consistent push (voltage). Think of it like this. If you put a nozzle on a water hose, the water coming out will be moving faster than the water moving through the hose because it has to keep a constant mass flow rate with decreased volume. This isn’t the case with a circuit, which is why using a smaller diameter valve to represent a resistor isn’t accurate. A resistor is supposed to slow the current, not speed it up. This is why most lessons will use a water wheel to represent a resistor when using water flow to represent a circuit. A water wheel causes resistance, slowing the current and transferring the kinetic energy of the water to rotational kinetic energy of the wheel. In the same way, a resistor slows current and creates heat.
Ashon Randall could you please suggest me a resource on Basic Fundamental Electronics ?
I need to understand inside-out of these...
PLEASE
vegasbryan
Wouldn't it be better though to say that in the case of a resistor, if we're talking about an analogy to electrical flow...that it would be the equivalent of making very small precise holes. Resistance is basically the amount of the electricity flowing through a conductor that's lost to heat, right? So it can't do useful work...Wouldn't that be equivalent in springing leaks in the pipe so simply not as much water reaches the destination (load)?
A resistor limits current in an electric circuit much like a partially closed valve limits mass flow in a hydraulic system. A redistribution of pressure occurs and more pressure drops across the valve to sustain a lower mass flow rate. When this occurs less pressure is available across the existing hose or pipe to maintain the previous water flow.
A similar thing happens in an electric circuit, most of the voltage drops across the resistor (partially closed valve) to maintain a now lower electrical current. Less voltage is then available across the existing conductors to maintain the previous electron flow (current). Electrons actually do move faster in the resistor then they do in the conductor material since the resistance in the conductors is so low that they act like huge diameter pipes. The increased electron velocity creates a large transfer of energy into the resistor in the form of thermal energy (heat) and the resistor gets warmer in the process.
You are right that the mass flow in a hydraulic system is the same everywhere in the system whether the water is moving quickly in a small diameter pipe or slowly in a large diameter pipe but fact remains that the mass flow rate is changed by a restriction in the system. A new, lower, mass flow rate is created by a restriction and the restriction requires a redistribution of system pressure to maintain the new lower mass flow rate.
Wonderful. Great lesson for beginners.
yeah
Common mistake. In the tube of water is no pressure drop! Venturi taught us, that the pressure is lower in the narrow part of the tube, due to higher flow speed and equal before and after the narrow part of the tube. A liquid can not be compressed nor expanded! If you want a pressure drop in the tube, you have to take out energy out of the flow eg by a turbine.
A constriction of the pipe will cause an increase in pressure. That's how our circulatory system works. If you reduce diameter you increase pressure. As an artery or vein constricts, there is a consequent increase in blood pressure.
+Steph E. Hi Steph. You are mixing up things. Our vascular system contracts as a whole. Therefore the volume of the whole system decreases thus the pressure in the contained liquid increases (p=m/V). But in a pipe where a liqud flows we have partial pressures. In the narrowed section of a pipe the speed of the liquid is higher as in the neighbouring wider parts. The partial pressure in this section is therefor lower. For in depth info look up "Venturi" and "Bernoulli".
Positive leg of LED is longer, you have battery reversed.
+Michael Esping Almost always positive leg of LED is longer.
+Michael Esping Does the resistor always have to be on the positive side?
+jedi22300 The resistor can be connected either on the positive side or on the negative side
حنا بطرس Okay thank you
This was the fastest responce any one can have
These all resistance value colors below:
Value. Color. Multiplier (x10) Tolerance
0. Black 0
1. Brown 1 1 %
2. Red 2 2%
3. Orange 3
4. Yellow 4
5. Green 5 0.5%
6. Blue 6 0.25%
7. Purple/Violet 7 0.1%
8. Grey 8 0.05%
9. White 9
10. Gold -1 5%
11. Silver -2 10%
12. No color --- 20%
For example of 4 band or 5 band color of a resistor:
For 4 band color:
10 Ω with tolerance is 5%
(brown - black - black - gold)
47 Ω with tolerance is 5%
(yellow - purple/violet - black - gold)
560 Ω with tolerance 5%
(green - blue - brown - gold)
5.100 Ω (5,1k/5K1Ω) with tolerance is 5%
(green - brown - red - gold)
15.000 Ω (15kΩ) with tolerance is 5%
(brown - green - orange - gold)
270.000 Ω (270kΩ) with tolerance is 5%
(red - purple/violet - yellow - gold)
2.000.000 Ω (2MΩ) with tolerance is 5%
(red - black - green -gold)
12.000.000 Ω (12MΩ) with tolerance is 5%
(brown - red - blue - gold)
240.000.000 Ω (240MΩ) with tolerance is 5%
(red - yellow - purple/violet - gold)
1.000.000.000 Ω (1GΩ) with tolerance is 5%
(brown - black - grey - gold)
47.000.000.000 Ω (47GΩ) with tolerance is 5%
(yellow - purple/violet - white - gold)
For 5 band color:
47 Ω with tolerance is 1%
(yellow - purple/violet - black - silver - brown)
390 Ω with tolerance is 2%
(oramge - white - black - black - red)
2.200 Ω (2,2k/2K2Ω) with tolerance is 1%
(red - red - black - brown - brown)
51.000 Ω (51kΩ) with tolerance is 1%
(green - brown - black - red - brown)
470.000 Ω (470kΩ) with tolerance 2%
(yellow - purple/violet - black - orange - red)
1.500.000 Ω (1,5MΩ) with tolerance is 2%
(brown - green - black - yellow - red)
15.000.000 Ω (15MΩ) with tolerance is 1%
(brown - green - black - green - brown)
470.000.000 Ω (470MΩ) with tolerance is 1%
(yellow - purple/violet - black - blue - brown)
1.500.000.000 Ω (1,5GΩ) with tolerance is 2%
(brown - green - black - purple/violet - red)
56.000.000.000 Ω (56GΩ) with tolerance is 1%
(green - blue - black - grey - brown)
470.000.000.000 Ω (470GΩ) with tolerance is 2%
(yellow - purple/violet - black - white - red)
You have made my life easier
thanks this was help full for my casp report
great presentation please keep the videos coming
Awesome explanation, thank you for the video!
I love your website.! Very helpful. Thanks
Hello my resistor has burnt out but it look's like it is 1 brown and 3 black, can you please tell me what the resistor strength is, or even if you can get that configuration. Thanks and hope you can help. I've asked 4 other people but they haven't answered. Please help.
Why did the 30mA turn into 0.03 on the equation at 2:28 ? Thanks in Advance !
According to formula , when you use Voltage , you must use Amper as a unit.So there is a conversion between milliampere to Ampere then 30mA makes 0.03 Ampere.Actually they are the same value.
I'm an electrician and I know what I'm talking about, blue is on the right on a standard plug, and if you shorten the lead on your kettle it will boil quicker,
Thanks for the lesson
I'm a qualified Elect Contractor. I assure you the only RESISTER I had a problem with was my Ex Missus.
Just Amazingly explained! Thank you!
whats up with that colored code resistor ? does that thing actually physically change colors with different voltages applied to it ?
Excellent video! Thank you so much!
Note: Electricity flows out the negative side, and in by the positive. The resistor is placed on the negative.
Isn't the LED positive lead the long one? Might want to update your image.
Excellent explanation
Great video. Thank you
man, I do really appreciate your hard work but this could lead to a huge misunderstanding to mostly everyone out there!
-according to the colors of the resistor you used in the very last scene, the resistor is: [R=2.6G] ohms (red is 2, blue is 6 and gray is 100M), so it's 2600M which is 2.6G.
-and according to the colors you mentioned (red, blue and green), the resistor should be [R= 2.6M] ohms
please correct this mistake man, because I myself got confused when you said green and I saw gray.
Im a biomedical engineer.
thanks
ድንቅ ነው።
ተባረክልኝ።
Can we also say a step down transformer?
6:08 If the third band is grey, then why did you highlight the green?
In resistors color code ,in the first watch iam confused to the color gray but the video highlightend the green one which is 100k..but in the end i understand why, may be its just an human error ...but very thanks!!
Can you explain why you placed the resister at the positive lead, and not ground?
The resistors and the capacitors need a tiny Blue LED and one RED LED to show BLUE when working properly and show Red when not working properly
Great explanation! All of you who cave critical responses, please explain all this in another language and see how you do.
Hi! I have a question. Why don't they simply write the numbers instead of using colours?
Ok, so I know this might be a noob question, but what do I put I front of an LED if I want a short delay after I switch the circuit on? If you want to know why I'm asking, it's because I'm soldering some LEDs to my xbox controller and I want to have a delay for each of them when the rumble activates. I am using 6 LEDs, 3 on each side of the clear front trim (what I mean is after 1 second 1 led lights then after 2 seconds 2 LEDs light and after 3 secs all 3 (on each side) light up). It would be amazing for a reply. Thanks!
you would need a microprocessor! those tall black ones i mean
That helped me a ton, thank you.
Hi there
I just started learning, but here I get confused - Which way do the electrons flow in a battery? my previous reads "negative to positive" but here he connects resistor in positive side. Pls clarify me..
In physics, for stupid reasons, you have conventional flow, which is the flow of positive charges towards a negative charge, and electron flow, which is negative to positive.
When talking about current, you say that it moves from positive to negative. When talking about electrons, you say negative to positive.
HugThePolice cool explanation thanks
thanx for the information but can any one say that in the video it was shown that by connecting the resistor in series with bulb the current was controlled but in case of theory we use to say that for series connection of resistors the current flowing is same at all the resisters connected in series what does it mean?
Great lesson ❤
Reminds me of my young days when i started to learn Electronics. About how to remember the colour code, and to know the value of a resistor, we were made to follow a sentence. The sentence was, B B R O Y Great Briton Very Good Wife. All the capitol letter representing the colours B for Black, B= Brown, R for Red, Great= Green, Very = Violet, Good= Green, Wife= White. Ha ha how funny were those days.
My receiver only stays on for 15 minutes then it will just turn off automatically m. What capacitor would it most likely be, please? Or is it something else?
Why doesn't the resistor burn up or atleast get hot?
It does. But when the resistors limits are exceeded
Does resistor delays power consumption? i had a case of smoke generator that i mdel a coil out of vape wire and a 5v fan and the power was 7.5volt 1000mah rechargeable battery, it runs for roughly 8 -10 minute and the power will ran out, one of the biggest reason i'm thinking on adding a resistor was i hope it would slow down the flow of the current but does this actually means same amount of power would still be wasted ? and that protects the fans and the heater wire coil from burn out?, i'm working on my second homemade smoke generator for my RC(remote control) tiger 1 1:16 , but this time the boiling chamber was much more compact and smaller which made the smoke liquid runs out even faster and the coil would caught lit up with fire and later extinguish itself when the oxygen in the bottle was used up, i still had a lot of adjustment to do with this smoke generator , improved until it was much more feasible to use than conventional aftermarket smoke generator.
mhh at 2:43 are some mistakes the first mistake is that you are connecting the positive lead to the cathode.. (negative end) so i practice and theory the led wont work because afterall its a diode which has his polarity. ( a diode lets the electrons flow in one direction so it won't work. the long lead is always the anode (+) and the short one the cathode (-), second an led has an forward voltage(Vf) its means that it needs an certain voltage(depends on colour but im gonna take 3V as an example to work you need to keep that in mind so instead of 9/0.03 its (9-3) its 6/0.03
but still great video! sorry for my english :D greetz
very clear explanation.
Nice video. Thanks for uploading.
Incredibly informative video... I never knew what the color strips meant on a resistor. Thanks!!!!!!!!!!!
well explained man... great work.. keep it up.
So resistor lowers the current and the voltage or only current??
Maybe somebody can help me out on this one? I'm about to connect a pocket plasma clip-on I bought (normally using 2x AAA 1,5v batteries = 3v) to a 9v block battery that also is connected to other electronics. What resistor do I need for this one (what color schematic)? Anyone knows? Because I'm not that experienced reducing voltage and want to turn everything on and off with just one switch.
Are you Harald Baldr?
I didn’t know GSP loved resistors so much!
So does the resistor change its Ohms if connected to something else ? Like, using that same as in the LED example, with another 45mA LED, will that same resistor switch to 200 Om ?
Or is that value a constant depending on what ? The material that resistor is built with ?
Can that same transistor be used for some high voltage stuff like city electrical connections with 1.000.000 V ? If no why not ?