LDR and LED Circuit design - Solid State Relay
ฝัง
- เผยแพร่เมื่อ 1 ต.ค. 2021
- How to make a simple solid state relay using an LED, a LDR and resistor. Shown with calculations.
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Please bro make a video about transferring router data over LASER orLED
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These videos are absolutely fantastic. I wouldn't change a thing about them. Easy to understand, straight to the point, proves the the design with proper calculations, all in under five minutes. I'm buying you a coffee right now!! Then, coming back to finish this video and share it with my 13-year old son.
I liked the practical demonstration along with the animations.
Thankyou
Glad to hear
This is awesome !💯
Yea I felt like I was watching a Ben Eater video when he pulled out the breadboard. Awesome format!
The best explanation of LDR I've ever seen on YT. Showed everything about him. It left nothing to be said. Thanks for the perfect job !
The first thing came into my mind on LDR is long distance relationship.... By the way Sir, this is the best channel I've been watching since I started working in building facilities... I consider this channel as the most informative video tutorial channel when comes to building equipment and other devices....
You sir are a blessing to the internet.
Very cool! Very informative design on how an optocoupler works.
Thank you for explaining and showing animations, I'm delighted😉👍👍
Always something interesting to learn from you, I swear lol
Very accurate machine learning iron station pid control😎
Hey Paul thankyou so much for this video
It is worth mention applications of LDR.
Camera light meters, clock radios, alarm devices (as the detector for a light beam), nightlights, outdoor clocks, solar street lamps, and solar road studs.
Photoresistors can be placed in streetlights to control when the light is on.
Thanks!)
Seen our new video on HOW SOLAR PANELS WORK in detail th-cam.com/video/Yxt72aDjFgY/w-d-xo.html
This is very interesting. I didnt know what a LDR was until today but the example you've shown reminded of me how Optoisolators works. Useful to protect expensive equipment in case of a Overload on the output side.
A lot of electronic decorations have built-in LDR's ... You can find them at the dollar store.
While i was looking for videos to learn electricity i never find better than paul 80% of my electric basic informations is from him i will remain thankful and supporter
Glad to hear!
Your videos are very...very...very good!
Super excellent pls pls continue
Fun circuit :) Well explained.
Best chanel💚💐
Better to be a loyal audience than the first audience. 👍👍👍👍👍.
thanks💎
Thank you.
Thank You
I m very much enthusiastic about engineering . So I made a bench type drilling and screwing manual machine..
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Hello
Thank you so much for your videos and always appreciated and you video quality is amazing!!
I am starting my new job as an apprentice electrician in a month time.
However, I haven`t studied any pre-trade course regarding electricity so I am trying to study the basic theory of electricity.
Which playlists do you recommend me to watch before I start my apprentice so I can give an impress to my boss?
Thank you!
Great content man, anyways can you do a video about transistor biasing?
You wouldn't happen to know which LDR you were using? These values are exactly what I'm looking for. Thanks!
Very good sir
Very good explanation Sir
Thanks a lot
Which design software you use for the Design and explaining of HVAC SYSTEM.
Thanks in advance
Wow
Really thanks for explain the ohm's law i really understand easily
Thanks one's again🙏🤤😄
Happy to help
@@EngineeringMindset yeah same for me I knew what ohms law was but this visualization. And that simple math equation to figure out the resistance needed was like a light bulb in my head thank you
Interesting. Im into cars and have been installing and conceptualizing all sorts of security measures into 90s/older cars (chips, rfid, etc). Would be interesting to use a light based "key" in a security system bc we dont usually associated a light as a "key". Or use it for just 1 part of security system.
Wouldn't be a "key",but just a switch or aux switch in order to power a secondary system, or supply a ground....for systems such as the ignition.
Amazing
Thanks
Good
How can we invert the operation of the detection circuit so that we can make a night light??
Great video Paul! Thanks for show people how to make simple relay with no moving part (except for... light)
Also. Why you come with 9V battery resistor, instead of using 3.7V or series 1.5V battery?
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Ive been looking for this. Thanks *fur* uploading in time!
Enjoy!
@@EngineeringMindset understood. Thank you!
Please do video on ferranti effect
Bạn chia sẻ rất hay, có làm mạch và video mô phỏng hoạt họa rất hay.
Can you translate this to English? Just for fun.
😀
Paul are there any values when you buy a ldr like 1k resistor
@@kennmossman8701 Thank you
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It works kinda like an octocoupler
Long story short, this is how you build an optocoupler :)
He explained the LDR but also explained the optocoupler! Very good !
2:40 What I believe is the correct way of calculating the necessary resistor to implement in our circuit; we should first determine what is the voltage drop across the 70 Ohm LDR, first:
[LDR] V = R x I = 70(Ω) x 0.02(A)
[LDR] V = 1.14(V).
Now that we have found what the voltage drop around the LDR is, we can calculate the voltage drop that needs to take place in the Resistor we are trying to find. We subtract all the voltage drops from the original 9(V) battery:
[Voltage drop from the required Resistor] R(V) = [Battery/Total] 9(V) - [LED] 2(V) - [LDR] 1.14(V) = 6.86(V)
Now that we now that our Resistance will give us a 6.86(V) drop after we implement it; we can calculate what actual resistance (in Ohm) it will consist of:
R(Ω) = 1.14 (V) / 0.02 (A)
R = 343 Ω.
Am I correct, or am I missing something?
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Seen the new LED explained video? so much detail covered! th-cam.com/video/O8M2z2hIbag/w-d-xo.html
❤
Suppose a person wants to use the LDR with ambient light to turn on a light when the ambient light reaches dusk level.
How would you mod your circuit to make that work & to minimize power consumption when sunlight is present?
voltage divider resistor/ldr feeding base pin of transistor
Inverting the ldr output could do this as well.
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That is basicly an optocoupler, right ??
Correct
Also known as Cds (Cadmium sulfide) cell
What is the usage case for this?
Solid state relay, electrically separates two circuits but allows signal/control to transfer between them
Nice engineer i wish to my channel is like thuis more more power
I thinked this relay some time ago. Just recently i know that's alrady used.
1 hours ago!.
You can make a circuit to turn the light on and off if you use one of those resistors and a transistor as your switch
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@@EngineeringMindset Looking forward to it, trying to work on my AET and these videos really help with the fundamentals
You make optocoupler
So what would be the application - you press a switch to one led to turn another one on, instead of just using the switch to turn the red on
It's a relay. You control a second circuit by passing a signal, that way you protect the circuits because they are not electrically connected. You can use it for automation.
Can you please do a video explaining the build of an FM transmitter?
It should be as basic as this pls
System autocopler
What is the meaning of "Solid State Relay" in your title? Which one do you referred as solid state?
No moving parts
@@EngineeringMindset I see. Thank you for your reply.
So effectively you made a optocoupler from ldr & led. So you now can replace them with a single component instead of using two. 😉
Paul am i missing something? Where is your intro?
Dropped it, straight to the learning.
Optocoupler
Good video, high quality. But i got some notes maybe to help you as feedback. This circuit uses more current than optocoupler, aswell as components. I think you shouldve made a video regarding optocoupler, you spent time explaining basic omhs law, but made a video about using ldr as optocoupler. Hope u see what im saying in good will. Just pointing out the flaw
We have covered how optocoupler works and how to build a circuit with an optocoupler in previous video. This is a simple circuit, just intended for fun learning, not to replace an actual optocoupler component
More like a " Optocoupler " .
more, more, don't go away, get back up there.
First view from a kid
Hey there please make a 220v ac to 30v 10a dc power supply qithout transformer, please
can you please design a flyback driver circuit?
Please make a plasma arc speaker using flyback transformer.
*Secretly wiring the two circuits together under the electrical tape off camera like all the other free energy videos... muhahahaha
shouldn't this be titled 'how to make an optocoupler' or how do they work
How Doe's work mini Air conditioner PCB.
🥃🍺☕🙂👍🏻
I preface this comment with, I literally know nothing about all this cool stuff. My ADHD took me down a hyper-fixation rabbit hole learning about circuits on TH-cam, and now I have a question that might be silly to those of you who actually understand all of this... but... Can the LDR be a self-sustaining circuit? Meaning, if the light has a two-way switch, and one of the switches is an LDR opposite to your example (light on=LDR lets flow through instead of resisting), could the second switch turn on the light but then when that same switch goes to the off position the light would stay on because the first LDR switch is triggered by the light? LOL please help! I can't rest until I answer my weird hypothetical, but I don't know enough to google the right words...
I bought a ldr from the electronics shop but it didn't work
Weird. Never heard the term “LDR.” “Photo-resistor” is what I’ve always heard.
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