What is an LDR? (Light Dependant Resistor) - Electronics Basics 26

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Simply Electronics

Simply Electronics

Күн бұрын

Let's take a look at LDRs, how they work, and their uses.
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Пікірлер: 133
@christinechen7711
@christinechen7711 3 жыл бұрын
THANKYOU SO MUCH!! lost electronics student here, i can't thank you enough.
@syRoboChe1
@syRoboChe1 7 жыл бұрын
Now I've watched entire Basic playlist and thank you for these great lectures. It's great tool what makes your lectures more interactive. : )
@charlieluo2910
@charlieluo2910 6 жыл бұрын
hello , this is charlie luo. we are manufacturer for LDR (Light sensor ) we are offer u samples for FREE! please contact with me!
@coreydonald6088
@coreydonald6088 2 жыл бұрын
You all probably dont give a shit but does anybody know of a tool to log back into an Instagram account? I was dumb forgot my login password. I would love any tricks you can offer me.
@hectormarshall8608
@hectormarshall8608 2 жыл бұрын
@Corey Donald Instablaster ;)
@coreydonald6088
@coreydonald6088 2 жыл бұрын
@Hector Marshall thanks so much for your reply. I got to the site thru google and im waiting for the hacking stuff atm. Seems to take quite some time so I will reply here later with my results.
@coreydonald6088
@coreydonald6088 2 жыл бұрын
@Hector Marshall It worked and I finally got access to my account again. I am so happy! Thanks so much you really help me out :D
@fuma9532
@fuma9532 3 жыл бұрын
I've gone through the whole playlist today and it cleared up a lot of stuff, thank you! I'm getting curious about electronics and this was just what I needed :)
@audiobooth4367
@audiobooth4367 4 жыл бұрын
This is a really well voiced video. Clear concise and easy to understand. Well done. Subscribed.
@davidwilliams347
@davidwilliams347 4 жыл бұрын
Thank you for some really interesting tutorials, great stuff. Gives me some confidence to tackle an up coming project which has a very practical application on resolving a automotive issue. May need some guidance. Thanks again.
@johnthekkekara5794
@johnthekkekara5794 4 жыл бұрын
Nice ,I have watched entire playlist .It was helpful to me Thank You. Expecting more videos covering the subject
@destasyoum9615
@destasyoum9615 6 жыл бұрын
That was really really awesome!!!!!!! looking forward to hear from u for the next episode
@akshara720
@akshara720 3 жыл бұрын
This video helped a lot with my science fair project!
@AhmedHassan-yc1dt
@AhmedHassan-yc1dt 6 жыл бұрын
That's what i was looking for to use in my educational projects, thanks alot :)
@indhujag5920
@indhujag5920 3 жыл бұрын
Thank you for the entire playlist😃Great lectures 👏🏻👏🏻👏🏻👏🏻
@nomunsheikh1312
@nomunsheikh1312 5 жыл бұрын
Finally I have completed the playlist. Waiting for new videos.....
@Richie_
@Richie_ 2 жыл бұрын
That's it, all done.. That was a fantastic course.
@jimmysegovia2688
@jimmysegovia2688 3 жыл бұрын
dang, good stuff man!!!! learned something new! thank you for sharing.
@nicolasr9390
@nicolasr9390 6 жыл бұрын
Keep up the good work!
@pryansh_
@pryansh_ 2 жыл бұрын
thank u sir for this wonderful explanation it really was so helpful
@Nany-dv8yg
@Nany-dv8yg 5 жыл бұрын
That was so helpful, thanks 😊
@davidbolha
@davidbolha 6 жыл бұрын
Hi, You can use this in a laser spy audio microphone, right ? Or would a general smaller solar cell be a better choice ? Thanks.
@resrussia
@resrussia 7 жыл бұрын
I am looking forward to seeing the project using the LDR.
@charlieluo2910
@charlieluo2910 6 жыл бұрын
hello , everyone . we are manufacturer for LDR (Light sensor ) we are offer u samples for FREE! please contact with me!
@ivanfaye3041
@ivanfaye3041 4 жыл бұрын
Keep looking there nothing to see
@byagarisachin2312
@byagarisachin2312 3 жыл бұрын
Curtain operation using LDR
@byagarisachin2312
@byagarisachin2312 3 жыл бұрын
Blind I mean window type it depends on light intensity
@anjanaimesh3258
@anjanaimesh3258 3 жыл бұрын
thanks lot!I watched all of simply electronic basics playlist.its help me lot for educating electronics.i am new for electronic so please tell me someone did this playlist cover all basics of electronics?
@darbarisid
@darbarisid 7 жыл бұрын
Nice video.. amazing application of ldr..
@asaf158
@asaf158 3 жыл бұрын
Love your channel! Thanks :)
@masalman1441
@masalman1441 7 жыл бұрын
thanks a lot ..Really need more videos ....
@sweetblues3230
@sweetblues3230 9 ай бұрын
Clear explanation ❤
@jpwest
@jpwest Жыл бұрын
Hi there, I have enjoyed your Basic Electronics series very much and even used it for teaching! So great work! 🙂👍Haven't you considered making some more videos with simple circuits, also created in Everycircuit! I could for example envision some with crystals, LF amplifiers, RF amplifiers, emitter followers, common base amplifiers, transformer circuits, mixer circuits, simple oscillators like Pierce and Collpits types, a Wien Bridge oscillator, a Wheatstone Bridge, a Maxwell Bridge and other DC or AC measurement bridges, Low pass, High pass and Bandpass filters, circuits with opamps and equivalent circuits illustrating how capacitors, inductors and resistors work at high frequencies. What do you think?
@user-ls4jo4ku7z
@user-ls4jo4ku7z 6 ай бұрын
Regarding the geometric properties of the resist, is the external area of the resist (the brightness area) the only factor, or does its behavior differ with respect to thickness?
@jhwieder2112
@jhwieder2112 7 жыл бұрын
Hi, great videos. I'm teaching an extra-curricular club course in my school. I'm trying to create a dark-detector for my students to take home. I've seen many videos on youtube, but none of them explained how their LDR worked. It seems we have different LDR and ratings. Can you explain how to make a night light with an LDR? Please include the power ratings of the LDR and the resistors that are necessary, which no one else does. Thanx
@LFibonacci1618
@LFibonacci1618 6 жыл бұрын
Are there LDRs that increase resistance when it’s surrounding get brighter? In other words: the same way there are PTC and NTC thermistors, are there positive and negative LDRs?
@abriwin
@abriwin 6 жыл бұрын
Great, now I need to know how to design a circuit to switch my night lights on and off. Thanks
@tomasfranco4870
@tomasfranco4870 3 жыл бұрын
Excelent videos!
@suresh750
@suresh750 5 жыл бұрын
Hey! Explain Working priciple also on atomic level. //wht happnd int it when photons strike semiconductor? wht cause free its electron nd how resistivity drops???
@8304Hustla
@8304Hustla 7 жыл бұрын
hey just wanted to let you know this is an amazing channel. but im wondering how do you manage to be an engineer and simultaneously upload such good content on youtube?
@SimplyElectronicsOfficial
@SimplyElectronicsOfficial 7 жыл бұрын
Thank You! I manage with difficulty which is why I don't upload as often as I'd like. The support from you guys keeps me motivated to keep this channel going. As long as I have the support and viewership I'll continue to create and upload in the spare time I get.
@sayyedmahdihashimi5520
@sayyedmahdihashimi5520 4 жыл бұрын
Very useful thank you
@growingplants2657
@growingplants2657 Жыл бұрын
Great vid man!!🤣
@dang25272549
@dang25272549 5 жыл бұрын
Excellent! !
@user-ls4jo4ku7z
@user-ls4jo4ku7z 6 ай бұрын
Regarding the geometric properties of the resist, is the external area of the resist (the brightness area) the only factor, or does its behavior differ with respect to thickness?
@friendonymous
@friendonymous 6 жыл бұрын
Can ldr detect the frequency with which an LED is blinking?? Please answer
@dipakpoddar7753
@dipakpoddar7753 7 жыл бұрын
Simply awsm very helpful
@charlieluo2910
@charlieluo2910 6 жыл бұрын
hello , this is charlie luo. we are manufacturer for LDR (Light sensor ) we are offer u samples for FREE! please contact with me!
@osirukavithmaelvitigala4651
@osirukavithmaelvitigala4651 6 жыл бұрын
Very useful
@mekalavamsi8131
@mekalavamsi8131 5 жыл бұрын
nice video sir
@GGGONEXT67
@GGGONEXT67 3 жыл бұрын
thank you!
@Istoryahetvvlogs
@Istoryahetvvlogs 3 жыл бұрын
woow...i like your video very informative...
@gustavocalderon3592
@gustavocalderon3592 4 ай бұрын
Can we control the on an of with a relay, example to turn on x thing on day light.
@rawlelowe7021
@rawlelowe7021 2 жыл бұрын
how do I know what type of LDR to use in a circuit or what voltage to use
@KagimuEmmanuel-lw3nx
@KagimuEmmanuel-lw3nx Ай бұрын
That cool , thank you
@P_DOGG_ALI
@P_DOGG_ALI 6 жыл бұрын
what happens to voltage if the resistance is low/high?
@exaveryulomi8430
@exaveryulomi8430 4 жыл бұрын
thank you now i real understand working principle of ldr my only question is how can i make a dark sensor using ldr
@clowray2747
@clowray2747 Жыл бұрын
Hi. I'm trying to find out about LDR's. Nobody ever seems to answer, maybe they just don't know the answer. If I introduced and LDR to the tamper circuit of an average alarm system, and with a laser pointer pointed at it, would the current flow freely enough to keep the alarm system running without a fault? And if I then turn off the laser, would the resistance be great enough to trigger the alarm?
@mareysaad6597
@mareysaad6597 3 жыл бұрын
Thanks a bunch. Why don't you continue making more videos about electronics ???
@JM.COSMIC
@JM.COSMIC 3 жыл бұрын
What it's the best LDR?
@amuthan4137
@amuthan4137 7 жыл бұрын
very nice
@user-kv5fo7np7h
@user-kv5fo7np7h 2 жыл бұрын
Thanks 🙏🏻
@andrewj3177
@andrewj3177 2 жыл бұрын
I am dumb, will this work with simple led with 5v battery, to create some sort of automatic switch?
@tobiaswoods7951
@tobiaswoods7951 4 жыл бұрын
Can Someone help me, I’m so confused because for example in street lights as it gets dark there is more resistance. How I would interpret that is if there is more resistance then less current can flow through the circuit meaning that there is less light. But this doesn’t seem to be the case?
@felipesantana2126
@felipesantana2126 3 жыл бұрын
I think they use inverters, but I'm not sure
@tansy6271
@tansy6271 3 жыл бұрын
Thanks sir i see lDR resistor in videos and how does it work it's is increase ohm on no light Thanks for your share sir
@daruscole1586
@daruscole1586 Жыл бұрын
Are they used in digital cameras (still/video) to put the image into electrical signals (analog/digital)? I think I have read/heard that variable capacitors are used that vary capacitance with the amount of light in cameras so maybe this is a thing of the past.
@NNNILabs
@NNNILabs 7 жыл бұрын
Great!
@SimplyElectronicsOfficial
@SimplyElectronicsOfficial 7 жыл бұрын
Thanks :)
@user-ww4qv3dy9b
@user-ww4qv3dy9b 4 жыл бұрын
When the resistance of LDR increases, does the voltage decrease?
@hcplsmf
@hcplsmf 4 жыл бұрын
アキ健太郎 the resistance & the voltage of the LDR increases when there is no light. That is because the semiconductor is not being excited by light.
@emmanueladamnor7301
@emmanueladamnor7301 2 жыл бұрын
How can I make a wireless remote with only transistors, resistors , diodes and capacitors
@mudassiransari5819
@mudassiransari5819 6 жыл бұрын
Please make videos on electricals.
@lalithajakkula4819
@lalithajakkula4819 3 жыл бұрын
As you said that the resistance increases under dark conditions then how the streets lights on automatically at night? can any one clear my doubt why this LDR is used in street lights where street lights are used only night time where as LDR doesn't work during night as its resistance increases and becomes a bad conductor
@MisterXS75
@MisterXS75 7 жыл бұрын
where can i buy those clips for the multimeter and how do i attach them to my multimiter sticks? they look very handy to mesure resistors and elettrolitic capacitors
@a7dad822
@a7dad822 6 жыл бұрын
www.amazon.com/Push-Alligator-Clips-Test-Leads/dp/B002AMO5EI
@MisterXS75
@MisterXS75 6 жыл бұрын
Adam Haddad thank you
@a7dad822
@a7dad822 6 жыл бұрын
Np
@papaw2937
@papaw2937 6 жыл бұрын
Thank you Sandro for the question and Adam for the link. This will be handy
@chrish7583
@chrish7583 27 күн бұрын
I’m confused. If more light lowers the resistance, that would mean that there would be more current flowing through the circuit, powering the load (an LED for example). So, if there’s less light, there’s higher resistance, lowering the amount of current in the circuit. So the LED would turn off. At least, that’s how I’m understanding it. Is that right? Because that doesn’t make sense to me. I thought that you would want to power an LED or other kind of light source when it got dark?
@bableprint5301
@bableprint5301 4 жыл бұрын
Your are great
@james77011
@james77011 4 жыл бұрын
but, the video playlist was amazing
@karthikeyavarma4844
@karthikeyavarma4844 2 жыл бұрын
How the resistance value is instantly changes (Low/High)...?
@muhammadrafiqulislamkhan6994
@muhammadrafiqulislamkhan6994 3 жыл бұрын
Very simply explain. My question is why ldr uses resistor when circuit is made with it. Does it not work with using a resistor with it? If it works, Why? And if not, why not. This is my question to you. Thanks for today.
@sweettoiletpaper1875
@sweettoiletpaper1875 7 жыл бұрын
thanks
@deathlyhallows04
@deathlyhallows04 6 жыл бұрын
Im confused. When light hits it, it has lower resistance and when its dark it has higher resistance. How will the street light or night life power on if the resistance is high? Pls help me understand thank you.
@balajiganesan4399
@balajiganesan4399 6 жыл бұрын
bro if it is a bright morning, you will have more light, so its resistance is lower and the current can easily flow through the resistor and power the street light. And at night, there is darkness and you have higher resistance , the current cant flow through the resistor and doesnt power the street light.
@balajiganesan4399
@balajiganesan4399 6 жыл бұрын
ya then what is the point of light needed in morning and not in night ya im also confused
@conceptualphysicswithenggm9595
@conceptualphysicswithenggm9595 2 жыл бұрын
How can it be use in laser home security system with a, microcontroller (8085),, please make a video if possible. Thanks
@md.ashrafuzzaman4627
@md.ashrafuzzaman4627 7 жыл бұрын
Great but can you send some videos of the LDR projects
@kingdom7481
@kingdom7481 4 жыл бұрын
In which home electronic things can we find it please help
@seanhickey8851
@seanhickey8851 4 жыл бұрын
1) iphone brightness (your screen automatically gets brighter or darker in response to the light hitting it) 2) cameras automatically adjust the amount of light that is allowed in based on an LDR
@novagamer6198
@novagamer6198 6 жыл бұрын
Thanx i swer u help me 👍😣
@PrinceYadav2024
@PrinceYadav2024 4 ай бұрын
How does geyser works?
@homemadedelicious6478
@homemadedelicious6478 6 жыл бұрын
OP amps and comparaters please
@harshn4104
@harshn4104 2 жыл бұрын
What is the component used in this video?
@paganphil100
@paganphil100 Жыл бұрын
didit hardiansyah: A light-dependent resistor (LDR).
@ianmclean8256
@ianmclean8256 4 жыл бұрын
Dependant or dependent?
@motonewz001
@motonewz001 2 жыл бұрын
❤️
@637cold
@637cold 4 жыл бұрын
Cheap meter for the win! Can't stop laughing. Great content btw.
@Crasy24Hours
@Crasy24Hours Жыл бұрын
💓
@igrewold
@igrewold 6 жыл бұрын
Tip/Trick : you can use LED instead of LDR, in case you do not have one or such :) makezine.com/projects/make-36-boards/how-to-use-leds-to-detect-light
@BeastgamerAY
@BeastgamerAY 6 жыл бұрын
From where can I get LDR
@nanimaladi2126
@nanimaladi2126 5 жыл бұрын
Any electronic shop
@garmischwong8551
@garmischwong8551 6 жыл бұрын
Why did u stopped making videos?
@jariwalamaitri3222
@jariwalamaitri3222 6 жыл бұрын
CAN WE USE LDR IN HEAD LIGHT OF ARE VEHICLES ???
@jamalhorani2648
@jamalhorani2648 3 жыл бұрын
👍
@avtarchodankar9635
@avtarchodankar9635 6 жыл бұрын
why capacitor is used with LDR?
@dancoulson6579
@dancoulson6579 5 жыл бұрын
A capacitor is not being used with the LDR in this video.
@richyyy8114
@richyyy8114 2 жыл бұрын
So does more resistance mean electricity flows better ?
@paganphil100
@paganphil100 Жыл бұрын
Jesse_Mang: No, it means the opposite.
@richyyy8114
@richyyy8114 Жыл бұрын
@@paganphil100 thank you
@thethreebrosyt1265
@thethreebrosyt1265 Жыл бұрын
GG
@james77011
@james77011 4 жыл бұрын
u made a video on inductors but u didn't go over transformers
@enigmaticmf
@enigmaticmf 4 жыл бұрын
Someone PLEASE send him a modern multimeter...
@CryT4x
@CryT4x 3 жыл бұрын
i thought it is a heat element and put 5v on it and wondered why nothing happens lol
@user-qt9xn6qs9h
@user-qt9xn6qs9h Жыл бұрын
ভাই এই LDR কোথায় পাব , প্লীজ বলেদাও
@SoCloseToTheSky
@SoCloseToTheSky 7 жыл бұрын
Time to visit aliexpress now :-)
@charlieluo2910
@charlieluo2910 6 жыл бұрын
hello , this is charlie luo. we are manufacturer for LDR (Light sensor ) we are offer u samples for FREE! please contact with me!
@user-hj6df3jf4w
@user-hj6df3jf4w 3 ай бұрын
cadmium sulfide photoresistor
@phasorsystems6873
@phasorsystems6873 4 жыл бұрын
Diodes, who needs them! inspect androidcircuitsolver on google
@syaugi5748
@syaugi5748 6 жыл бұрын
Long Distance Relationship
@finn7511
@finn7511 6 жыл бұрын
Geil
@joatmofa0405
@joatmofa0405 2 жыл бұрын
*TYPO* Dependant = Dependent
@fitnessmen3686
@fitnessmen3686 7 жыл бұрын
môme
@charlieluo2910
@charlieluo2910 6 жыл бұрын
hello , this is charlie luo. we are manufacturer for LDR (Light sensor ) we are offer u samples for FREE! please contact with me!
@kashifturki3274
@kashifturki3274 5 жыл бұрын
CBGB CBGB CBGB
@grahamwilliams8187
@grahamwilliams8187 4 жыл бұрын
Anyone else here because of online school??
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