I realize this video is 11 years old, but I still wanted to say thank you. Thank you for not assuming too much, for explaining it simply and clearly. And for anyone reading this who is trying to teach themselves electronics but is feeling intimidated, keep at it. You CAN get it. Don't be afraid to make a mistake, you will burn up some components and release the magic smoke, but before you know it, things will start to click and it will start making sense.
Hi Collin! I've just started learning electronics, and thanks to you, it's becoming a lot less intimidating. Thank you for all that you do. Your videos are excellent. Cheers!
Collin: Thanks for sharing. You and others like you have helped me pass my truck coach exams. You have helped me provide a better life for my family and for that I thank you. Keep up the good work.
Please give me a job,sir,electrical and electronic amie engineer ,syed mahfuzur rahman,syedmonirhossainctg@gmail.com.i am unemployment bsc engineer.i am low meritorious student.but i am honest.i am useless. Help me to give me a job.come i am Allah s jannati oli /prophet.Now i am simple man ,want a life,01721021791,Bangladesh, north halishahor,37 age,b block,r1,h30,Chittagong. Give me money to keep strong. Teacher house.
A true testament to Collin's great teaching and videography skills: Every Collin's Lab video has at least (if not two) one top comments that call for the return of Collin. p.s. Collin come back. we all miss you.
I just started reading Make: magazine and saw some schematics. Even though I didn’t plan on building the project I still wanted to know how to read it. So thankful for this video!
I love this Channel a lot. Its very informative and Collins make sure the viewer understands the subject discussed in the video. Keep it up ☝. Thumbs up. Love watching every videos you make.
This helps A LOT to those of us who wish we could do half of what people like Collin can do, but have no idea where to start! It has always been something that scared me, but him simplifying and explaining each of these things makes them seem kinda easy.
+Fluffykiwis J hi everyone ,if anyone else trying to find out how to make electronic circuits try Elumpa Circuits Expert Alchemist (just google it ) ? Ive heard some great things about it and my co-worker got cool success with it.
I look forward to your every video, Collin. You certainly have a gift for teaching. If I had a teacher like you back in college, I might have not gone into Accounting.
I do think, when talking about electronic circuits and schematics, people should get comfortable with the conventional current. Even though it is a scientifically incorrect way in looking at the electron flow, most of the, if not all, schematics are drawn having conventional current in mind. I remember first learning about this in school. Pissed the hell out of me. When you're dealing with + and - in the circuit, it really is not a big deal, but once common grounds and power supplies come into play, I just found conventional current to be more useful when reading schematics.
Another point in favor of this: current isn't always carried by electrons -- in stuff like batteries, current can be carried by actual movement of positively charged atoms. So it's usually best to just think in conventional current ("net movement of positive charge") instead of worrying about what subatomic particles are carrying the charge. An electron moving left is totally equivalent to a hole moving right, for the purposes of circuit analysis. So IMO, talking about electrons during circuit analysis does nothing but confuse students.
Object lesson in the idea of not knowing how much one does not know. I didn't think I was going to learn anything from this vid. I did. I suspect now that if I were to re-check a 3-watt amp I made, which ended up distorting badly, I will find that they are all backwards. I very much appreciate your comparing the look of schematic symbols to their real-world components. I've always thought that was the best way to learn them. Well done.
Loved it! How about a nice follow up video with more detail. May I suggest the bandpass filter schematic used for the background. Possible tips in follow up: Explain how the virtual ground connects, How & where to save ground connections on a breadboard, how the schematic directly compares to breadboard and PCB. I think many like my teenage son would gain a better understanding of this information with your methods of teaching and demonstrating. I will keep watching for more tips and ideas!
@3Deity I am not so sure you were wrong. Collin's explanation is describing electron flow, conventional current would flow in the direction the arrow points.
@rydude998 If you are talking about two-color diodes, these are actually two diodes wired internally in parallel. So, no matter which way you try to pass current, one or the other of the diodes will conduct, getting, say, red light in one direction and green light in the other. (By quickly switching directions, your eye sees two colors at once, giving, in this case, yellow.)
Colin was talking about the orientation of the diode in the circuit schematic, not the direction of charge flow in the diode. Charge flow goes from the anode (negative end) to the cathode (positive end). That's another thing, Colin mistakenly called the negative end of the diode the cathode. That's the anode end. Any device that dissipates electrical energy has the cathode end being the positive end and the anode end being negative.
Electron flow and hole flow exist in BOTH PNP AND NPN transistors and can be used to explain either. Pedants talking about electron flow and insisting it goes one way or another should remember that these are metaphors and cannot be considered "reality" since Quantum Mechanics rule here and the fundamentals of Quantum Physics say that an electron (or other fundamental particles) can exist everywhere at once i.e. they can (in theory) exist in two places at the same time.
Hey there. I can explain. Collin says that electrons can not flow in the direction of the arrow. It sounds like he screwed up but he's actually right. It's confusing because the direction of the arrow indicates which way CURRENT is allowed to flow. But current isn't defined as the flow of negative charges, it's defined as the flow of positive charges, mostly because the guys first studying electricity didn't fully understand it and thought electrons were positive.
@xbatusai You are still correct. In the world of electronics, every single positive and negative sign is the exact opposite. So in a schematic the electrons flow from positive to negative (look at a battery), this is called conventional current. But realistically, the electrons are flowing from the negative terminal to the positive. This is NOT to say that the electrons flow the opposite way around your circuit, it's saying your positive and negative markers are wrong.
I really liked this video it's quite good. A lot of the stuff would only make sense if you took physics but it's still a great video (IE capacitor parallel plates). The only downside is that actually analyzing circuits gets waaaaaay more complicated, especially when you start getting into non-steady state stuff and using the calculus. I'd love to see a video about the different methods of determining voltage drops, amps, power, etc etc. Like using KVL, KCL mMethod, mesh node.
Great video as always Colin. The only thing which could have been improved is the diode section, which very quickly brushed over the fact electrons flow from negative to positive and not from positive to negative as was presumed. You weren't wrong in what you said, just that it could be a point for confusion :)
@modgemtb One end (the end of maximumness) goes to the signal/voltage source. The other end (of minimumness) goes to ground or the return. The center (the wiper) is connected to the circuit that is being fed by the pot. When the shaft is turned to some point, the wiper is positioned at some voltage point between that of the source and zero. Pots have power ratings and the current drawn from them must not exceed them, which is not usually a problem for signals like audio or small DC controls.
@GegoXaren I live in Argentina and we also use the squiggly line, everybody does, in fact I don't think I've ever seen someone use the rectangles. For me the squiggly line is much more representative of what a resistor is, like most symbols, the rectangle lacks character, it doesn't imply anything.
@number0IX Yup, right on. In fact, many LEDs have a relatively low peak reverse voltage specification. Most of the ones I use are rated around five volts, IIRC. If you push them too hard in reverse bias, they *will* fail. It's not an LED if it conducts in both 'directions'; that would be a light bulb, neon bulb, or other device where polarity doesn't matter.
@Neodymio No, the video is correct. Electrons can only flow from the negative terminal to the positive. However, since we started designing electronics before we knew whether it was the electrons or protons that moved, we assumed protons, so CONVENTIONAL current, used in all electronics and electrical engineering, depicts current as flowing from positive to negative. So conventionally we'd say that current flows in the direction of the "arrow", left to right, but the electrons move the other way
@leipare I know, but conventional flow is better at actually describing electric potential, which is the driving force behind electricity. That's why everybody uses it instead of electron flow.
Electrical engineers still use conventional current flow (if positive charges were in the electricity) when analyzing circuits. Using the actual direction of electron flow causes confusion. That's why textbooks tell you to use the conventional direction to avoid confusion and sign issues. I know because I'm an electrical engineering student.
haha dude you are strange and very different but thats why you make learning extremely fun and easy. Just want to say thank you, keep up the good work, and most importantly dont change because if i had teachers like you in school i would actuallly have learned stuff while enjoying it.
Conventionally, yes, but electrons flow in the opposite direction to what we think of as the current flow. Electrons are negatively charged, so they flow from negative to positive. It's a bit counter-intuitive, but that's just how it is.
Nice set of videos! One thing that makes diodes and transistors easier to understand is to think of positive current. Have you done a video about that?
yes the ,size per capacitance is low. electrolytic capacitor use very narrow distance between plates .it has more capacitance C proprtinal to A/D . since distance is less it has more capacity. please subscribe my channel
Collin describes the diode well, but the graphic was wrong, I think. It showed the current being blocked in the direction of the arrow. It's actually the other way for common diodes. The current can flow in the direction of the arrow, but it is "blocked" in the opposite direction. Otherwise, great video.
he describes current flow through the diode in the electron flow convention (the way a diode physically operates). This is opposed to conventional flow (where electrons are assumed to flow from the positive to negative terminals connected to a battery for example) He's not incorrect, though he probably should have mentioned the convention
It depends. If you are studying the schematic for operation, you would begin where the signal enters into the schematic. For example if you are working on a radio you would begin at the antenna for a signal or at the power source (batt or line cord) for the power distribution, the. Eventually winding up at the output (speaker, headphones, lights, meter etc. If yoy are trying to fix things you work from the output back to the input
Diodes: the arrow points in the direction according to "conventional current flow" as in plus going to negative but yes, the electrons are actually travelling from negative source to the cathode and out tbe anode
An easy way to remember; Arrow in direction of plus to minus, and also representing a drop of about 0.6 volt . Also looking backwards, a "K" is apparent and this is the anode side, and a more positve potential on this side will allow a current flow.€-------.
@mysteryplane2001 There are 3 major "powers" in electronics. The Volts, the current (measured in amps) and ressistance (measured in Ohms), though i'm not sure how you measure stuff in the U.S., I wrote it how we measure it in Europe. A diode is a thing that lets the electric current flow one way, but not the other. It's like a filter, stuff goes in, but doesent go out. A capacitor charges an electric charge and then realeases it. The two things meantioned above are mostly used in AC current.
No, it's right. The cathode is negative for a diode. That's where the electrons come from in that instance. Protons don't move in a wire. The hypothetical "positive charge flow" that people speak of is just that, hypothetical. There isn't actually any positive charge flow in electricity. Only electrons flow in electricity. The positive charge flow is a convention used to indicate current, since current is defined as being opposite the direction of electron flow.
My mistake. In a diode the cathode is the negative end. In a battery supply power to a circuit the cathode is the positive end. It can be confusing; so to avoid that confusion you'll notice electrical circuit textbooks not speaking of a cathode or anode of an electronic device very often. Hence, that's why I couldn't remember which was which.
You don't mean something similar to these do you? TH-cam doesn't allow links from comments sadly so search for potentiometer circuits and see if there is something there that looks like what you're seeing. Sounds like a resistor connected to the central wiper of a potentiometer (voltage divider or resistance divider depending on usage and terminology) to me.
I understand the symbols, schematics, ohms law, etc. My question is where do I learn how these things interact and what specific collections are designed to Do? Say I find a schematic with no information on what it is. How do I understand the function?
I got quite confused there, because electrons move in the opposite direction from current. Sooo... when he said that electrons move through LEDs the way he said that they do, I am not sure if he was actually talking about electrons or about the current(which I think he meant to say). Could someone please help?
Still don't know what to connect to the +X V point when i have no idea where to connect the bloody ground and the circuit diagram has no ground terminal.
I hold a UK Bachelor's Degree (B.Tech - equivalent to a B Eng) in Electrical and Electronic Engineering, graduating in 1975, and I concur 100%. NO engineer - electrical OR electronic - worth his salt would EVER say that "current flow" (as measured by an ammeter) was the same as "electron" flow and ALWAYS refers to current flow when talking about circuits . It's just CONVENTION. This has ALWAYS said that current "flows" from a high potential to a lower potential.
I realize this video is 11 years old, but I still wanted to say thank you. Thank you for not assuming too much, for explaining it simply and clearly. And for anyone reading this who is trying to teach themselves electronics but is feeling intimidated, keep at it. You CAN get it. Don't be afraid to make a mistake, you will burn up some components and release the magic smoke, but before you know it, things will start to click and it will start making sense.
Hi Collin! I've just started learning electronics, and thanks to you, it's becoming a lot less intimidating. Thank you for all that you do. Your videos are excellent. Cheers!
Collin: Thanks for sharing. You and others like you have helped me pass my truck coach exams. You have helped me provide a better life for my family and for that I thank you. Keep up the good work.
I'm just getting started in Electronics as a hobby. I am really enjoying your videos, thank you for making them.
Same sir
Me to
Gosh that man must be one of the most rated teacher of all times ! God knows how well he explains things !
This video has to be the best out there for teaching the basics of schematics
It may have been helpful to note that an IC has a dot in the "top-left", or where you would start counting pins on the physical piece.
Please give me a job,sir,electrical and electronic amie engineer ,syed mahfuzur rahman,syedmonirhossainctg@gmail.com.i am unemployment bsc engineer.i am low meritorious student.but i am honest.i am useless. Help me to give me a job.come i am Allah s jannati oli /prophet.Now i am simple man ,want a life,01721021791,Bangladesh, north halishahor,37 age,b block,r1,h30,Chittagong. Give me money to keep strong. Teacher house.
I love how you simplify everything. Your tutorials make my brain swell like a balloon.
A true testament to Collin's great teaching and videography skills:
Every Collin's Lab video has at least (if not two) one top comments that call for the return of Collin.
p.s. Collin come back. we all miss you.
I just started reading Make: magazine and saw some schematics. Even though I didn’t plan on building the project I still wanted to know how to read it. So thankful for this video!
I love this Channel a lot. Its very informative and Collins make sure the viewer understands the subject discussed in the video. Keep it up ☝. Thumbs up. Love watching every videos you make.
Watched in slow motion to take notes, I LOVE YOU MAN
This helps A LOT to those of us who wish we could do half of what people like Collin can do, but have no idea where to start! It has always been something that scared me, but him simplifying and explaining each of these things makes them seem kinda easy.
Another thing to note when reading schematics, is generally signal traces run left to right, and power traces run top to bottom.
You're awesome, love your simplistic method of explaining complex ideas; if only more lecturers had your flair!
+Fluffykiwis J hi everyone ,if anyone else trying to find out how to make electronic circuits try Elumpa Circuits Expert Alchemist (just google it ) ? Ive heard some great things about it and my co-worker got cool success with it.
I look forward to your every video, Collin. You certainly have a gift for teaching. If I had a teacher like you back in college, I might have not gone into Accounting.
I do think, when talking about electronic circuits and schematics, people should get comfortable with the conventional current. Even though it is a scientifically incorrect way in looking at the electron flow, most of the, if not all, schematics are drawn having conventional current in mind. I remember first learning about this in school. Pissed the hell out of me. When you're dealing with + and - in the circuit, it really is not a big deal, but once common grounds and power supplies come into play, I just found conventional current to be more useful when reading schematics.
Another point in favor of this: current isn't always carried by electrons -- in stuff like batteries, current can be carried by actual movement of positively charged atoms. So it's usually best to just think in conventional current ("net movement of positive charge") instead of worrying about what subatomic particles are carrying the charge. An electron moving left is totally equivalent to a hole moving right, for the purposes of circuit analysis. So IMO, talking about electrons during circuit analysis does nothing but confuse students.
I'm just now getting into electronics and this makes learning about it so frustrating.
Collin creeps me the fuck out but gives me so much knowledge at the same time.
Object lesson in the idea of not knowing how much one does not know. I didn't think I was going to learn anything from this vid. I did. I suspect now that if I were to re-check a 3-watt amp I made, which ended up distorting badly, I will find that they are all backwards.
I very much appreciate your comparing the look of schematic symbols to their real-world components. I've always thought that was the best way to learn them. Well done.
I think I just found my inner nerd... Throughout the whole video, I felt so excited to learn about all of these. Thanks for this.
Collin should have his own channel for his lab videos, he is the reason I've watched half the Make videos.
Grate video but are you agent Smith from the matrix?
jajajajaja maybe :V
I think he was going for a Jack Kilby look
Everything that has a beginning has an end neo....
You can choose the red resistor or the blue resistor
thanks for the video..
Loved it! How about a nice follow up video with more detail. May I suggest the bandpass filter schematic used for the background. Possible tips in follow up: Explain how the virtual ground connects, How & where to save ground connections on a breadboard, how the schematic directly compares to breadboard and PCB. I think many like my teenage son would gain a better understanding of this information with your methods of teaching and demonstrating. I will keep watching for more tips and ideas!
Thank you so much for this! Finally someone to explain things without his audience falling asleep.
It would have been nice having something like this when I was a kid. I had to come up with my own allegories. Good job! I like this video.
I'm loving these. Stumbled upon them from the electronics intro Maker vids - but this guy is a legend. Lovin' it.
Collin's Lab was the only reason, why I subscribed.
@3Deity I am not so sure you were wrong. Collin's explanation is describing electron flow, conventional current would flow in the direction the arrow points.
@rydude998 If you are talking about two-color diodes, these are actually two diodes wired internally in parallel. So, no matter which way you try to pass current, one or the other of the diodes will conduct, getting, say, red light in one direction and green light in the other. (By quickly switching directions, your eye sees two colors at once, giving, in this case, yellow.)
Learned more in 5 min than I did in high school about diagrams. Maybe because I was interested today :)
I miss projects from collin. these are great
At 03:42 you got the working principle of the diode backwards. It's wrong.
Do you know the difference between conventional flow vs electron flow?
Awesome video for beginners! How much time you spent planning and making this video?
Colin was talking about the orientation of the diode in the circuit schematic, not the direction of charge flow in the diode. Charge flow goes from the anode (negative end) to the cathode (positive end). That's another thing, Colin mistakenly called the negative end of the diode the cathode. That's the anode end. Any device that dissipates electrical energy has the cathode end being the positive end and the anode end being negative.
Electron flow and hole flow exist in BOTH PNP AND NPN transistors and can be used to explain either. Pedants talking about electron flow and insisting it goes one way or another should remember that these are metaphors and cannot be considered "reality" since Quantum Mechanics rule here and the fundamentals of Quantum Physics say that an electron (or other fundamental particles) can exist everywhere at once i.e. they can (in theory) exist in two places at the same time.
wow this is the clearest explanation of schematics i have ever heard!
I work in electronics everyday and I still learned things. Great vid.
Hey there. I can explain. Collin says that electrons can not flow in the direction of the arrow. It sounds like he screwed up but he's actually right. It's confusing because the direction of the arrow indicates which way CURRENT is allowed to flow. But current isn't defined as the flow of negative charges, it's defined as the flow of positive charges, mostly because the guys first studying electricity didn't fully understand it and thought electrons were positive.
@xbatusai You are still correct. In the world of electronics, every single positive and negative sign is the exact opposite. So in a schematic the electrons flow from positive to negative (look at a battery), this is called conventional current. But realistically, the electrons are flowing from the negative terminal to the positive. This is NOT to say that the electrons flow the opposite way around your circuit, it's saying your positive and negative markers are wrong.
Thanks Collin your video gave a detailed explanation for electronic schematics. Awesome job!
I really liked this video it's quite good. A lot of the stuff would only make sense if you took physics but it's still a great video (IE capacitor parallel plates). The only downside is that actually analyzing circuits gets waaaaaay more complicated, especially when you start getting into non-steady state stuff and using the calculus.
I'd love to see a video about the different methods of determining voltage drops, amps, power, etc etc. Like using KVL, KCL mMethod, mesh node.
Great video as always Colin. The only thing which could have been improved is the diode section, which very quickly brushed over the fact electrons flow from negative to positive and not from positive to negative as was presumed.
You weren't wrong in what you said, just that it could be a point for confusion :)
I love your video and your pace/cadence of communication. I was hoping to see the inductor symbol explained before or after the capacitor.
@modgemtb One end (the end of maximumness) goes to the signal/voltage source. The other end (of minimumness) goes to ground or the return. The center (the wiper) is connected to the circuit that is being fed by the pot. When the shaft is turned to some point, the wiper is positioned at some voltage point between that of the source and zero. Pots have power ratings and the current drawn from them must not exceed them, which is not usually a problem for signals like audio or small DC controls.
Well done, Collin. You did in six minutes what many have failed at doing in entire books.
@GegoXaren I live in Argentina and we also use the squiggly line, everybody does, in fact I don't think I've ever seen someone use the rectangles. For me the squiggly line is much more representative of what a resistor is, like most symbols, the rectangle lacks character, it doesn't imply anything.
@rekinu5 That's Ground (GND). It's connected to Earth ground, digital ground, or the negative side of your supply.
nice i am the one who chatted with you of facebook and this is great to help me out sometimes.
@number0IX Yup, right on. In fact, many LEDs have a relatively low peak reverse voltage specification. Most of the ones I use are rated around five volts, IIRC. If you push them too hard in reverse bias, they *will* fail. It's not an LED if it conducts in both 'directions'; that would be a light bulb, neon bulb, or other device where polarity doesn't matter.
So simple, even an English major can understand it! Thanks, Collin -- I love your videos.
La verdad es muy educativo el señor collins,saludos chicos
It's a nice guide, but I wonder why you'd use the physical electron current instead of the technical current to describe how diodes work.
@Neodymio No, the video is correct. Electrons can only flow from the negative terminal to the positive. However, since we started designing electronics before we knew whether it was the electrons or protons that moved, we assumed protons, so CONVENTIONAL current, used in all electronics and electrical engineering, depicts current as flowing from positive to negative. So conventionally we'd say that current flows in the direction of the "arrow", left to right, but the electrons move the other way
I feel so much smarter. This needed to be on youtube. Thank you Collin!
Great as usual.
It would be more helpful, as if there were some links in the description for Fritzing and other free/open-source CAD applications.
@leipare I know, but conventional flow is better at actually describing electric potential, which is the driving force behind electricity. That's why everybody uses it instead of electron flow.
Electrical engineers still use conventional current flow (if positive charges were in the electricity) when analyzing circuits. Using the actual direction of electron flow causes confusion. That's why textbooks tell you to use the conventional direction to avoid confusion and sign issues. I know because I'm an electrical engineering student.
haha dude you are strange and very different but thats why you make learning extremely fun and easy. Just want to say thank you, keep up the good work, and most importantly dont change because if i had teachers like you in school i would actuallly have learned stuff while enjoying it.
@rydude998 LED's do not allow light to flow in both directions, this is why they have one big leg and one short leg. Current can only flow one way.
thnx Mr.Collin you deserve every like and subscribe
Collin vid showed in subscription notice. WOOT! Collin for president.
maybe I'm late but the music in the background was exactly what I needed this morning
music page?
Conventionally, yes, but electrons flow in the opposite direction to what we think of as the current flow.
Electrons are negatively charged, so they flow from negative to positive. It's a bit counter-intuitive, but that's just how it is.
Nice set of videos! One thing that makes diodes and transistors easier to understand is to think of positive current. Have you done a video about that?
Thank you. Very much you explain slowly and step by step and also the function😊🙂🙂 thank you...4x
Very nice! I will be placing a reference to this video in a video series I am creating.
are there any significant advantages for using an electrolytic capacitor over a non-e cap?
yes the ,size per capacitance is low. electrolytic capacitor use very narrow distance between plates .it has more capacitance C proprtinal to A/D . since distance is less it has more capacity. please subscribe my channel
Collin describes the diode well, but the graphic was wrong, I think. It showed the current being blocked in the direction of the arrow. It's actually the other way for common diodes. The current can flow in the direction of the arrow, but it is "blocked" in the opposite direction. Otherwise, great video.
Well done Collin, educating the masses. But will they get it?
Awesome vid! I finally understand how to actually read schematics now.
@surferboy36O rectangles are used in Sweden for resistors.
Another great video. Simple, informative, inspiring, and effective!
he describes current flow through the diode in the electron flow convention (the way a diode physically operates). This is opposed to conventional flow (where electrons are assumed to flow from the positive to negative terminals connected to a battery for example) He's not incorrect, though he probably should have mentioned the convention
Where do you star in reading? Left to right? After that just go in sequential order of components like r1,r2,c1,etc?
It depends. If you are studying the schematic for operation, you would begin where the signal enters into the schematic. For example if you are working on a radio you would begin at the antenna for a signal or at the power source (batt or line cord) for the power distribution, the. Eventually winding up at the output (speaker, headphones, lights, meter etc.
If yoy are trying to fix things you work from the output back to the input
Excellent video. I like the no bs approach.
Diodes: the arrow points in the direction according to "conventional current flow" as in plus going to negative but yes, the electrons are actually travelling from negative source to the cathode and out tbe anode
An easy way to remember; Arrow in direction of plus to minus, and also representing a drop of about 0.6 volt . Also looking backwards, a "K" is apparent and this is the anode side, and a more positve potential on this side will allow a current flow.€-------.
Does electricity always flow from negative to positive? If so, where? Thanks a bunch!
@zluisz he is talking about electron movement not the current.
thank you for this useful video,,, hope to see a video of how to determine if the shematic is working,,
@mysteryplane2001 There are 3 major "powers" in electronics. The Volts, the current (measured in amps) and ressistance (measured in Ohms), though i'm not sure how you measure stuff in the U.S., I wrote it how we measure it in Europe.
A diode is a thing that lets the electric current flow one way, but not the other. It's like a filter, stuff goes in, but doesent go out. A capacitor charges an electric charge and then realeases it.
The two things meantioned above are mostly used in AC current.
I know all the basics but how do you know what a circuit is supposed to do just by looking at its schematic?
No, it's right. The cathode is negative for a diode. That's where the electrons come from in that instance. Protons don't move in a wire. The hypothetical "positive charge flow" that people speak of is just that, hypothetical. There isn't actually any positive charge flow in electricity. Only electrons flow in electricity. The positive charge flow is a convention used to indicate current, since current is defined as being opposite the direction of electron flow.
My mistake. In a diode the cathode is the negative end. In a battery supply power to a circuit the cathode is the positive end.
It can be confusing; so to avoid that confusion you'll notice electrical circuit textbooks not speaking of a cathode or anode of an electronic device very often. Hence, that's why I couldn't remember which was which.
Collin needs his own channel!
You don't mean something similar to these do you?
TH-cam doesn't allow links from comments sadly so search for potentiometer circuits and see if there is something there that looks like what you're seeing.
Sounds like a resistor connected to the central wiper of a potentiometer (voltage divider or resistance divider depending on usage and terminology) to me.
@Yvessam The flow of electrons is the opposite direction to the flow of current.
I'm a wanna -be nurde (Nurds are the new school of cool!) and i just learnt a lot and enjoyed in this vid - Thnak you Colin (you rock!)
I wonder what kind of software he is using to create those beautiful schematics.
I understand the symbols, schematics, ohms law, etc. My question is where do I learn how these things interact and what specific collections are designed to Do? Say I find a schematic with no information on what it is. How do I understand the function?
Understanding what the components do will help you understand what a circuot is doing
I got quite confused there, because electrons move in the opposite direction from current. Sooo... when he said that electrons move through LEDs the way he said that they do, I am not sure if he was actually talking about electrons or about the current(which I think he meant to say).
Could someone please help?
The test signal circuit only one hook or all of the negative output ?
can you please keep explaining more about schematics its really interesting
Still don't know what to connect to the +X V point when i have no idea where to connect the bloody ground and the circuit diagram has no ground terminal.
U still having problem understanding? Maybe i can help. Been working in electronics for over 50 yrs
Thank you so much. You make me to understand very well. I have job interview. You r very helping
Cheers Colin! Your a legend! please dont stop making these vids!
I hold a UK Bachelor's Degree (B.Tech - equivalent to a B Eng) in Electrical and Electronic Engineering, graduating in 1975, and I concur 100%. NO engineer - electrical OR electronic - worth his salt would EVER say that "current flow" (as measured by an ammeter) was the same as "electron" flow and ALWAYS refers to current flow when talking about circuits . It's just CONVENTION. This has ALWAYS said that current "flows" from a high potential to a lower potential.
3:58 Diode description is totally wrong. It's actually the opposite.
really smooth and nice editing! really great job!
What about when the lines cross and there is what looks like the top wire "jumping" over the bottom.
@matthewtchernev123 no, there was no camera man. Collin used this thing called a tripod.