This can also be used to test optocouplers. If the LED is flashing, the coupler works, if the LED is always off, the internal LED is bad (open circuit), and if the LED is always on, the internal light sensing transistor is shorted.

wow.. yours is the best among all I've watch today while searching for a single led flasher with 3.7v input..! Thank you so very much.. You've earned my subscription.. 👍👍👍

@TechIdeasAG

5 жыл бұрын

Thank you very much

Works fine! The simplicity I like more, thank you very much!

It works,thank you very much.

Wow..amazing bro... #regard from indonesia

🙏❤️ Pretty awesome. I was searching for something to replace the 555 on my project. It'll be very useful.

@TechIdeasAG

5 жыл бұрын

Thanks

Works great :)

works perfectly, good circuit

I want to use 18V DC... What Resistor do I need to change? THANK YOU!

That's cool! I will make it on my channel.

U r all videos is super..

I like pc817. Thanks for knowledge.

Really you are The Man of perfection.I love your work . Keep it up & spread your knowledge.❤️

Ficou interessante. Abraço!

that's cool bro

cool work )

few quisten/help 1)what should we do to change the time if light blinking. 2)how much difference should there be,if we use two different resistance .

Perfect I like it

Cool.....im wait more creation teknik

kapo!!! saludos of argentina

buenas tardes lo felicito por sus proyectos muy eficases para probar componentes,una pregunta tines entre tus proyectos algun probador de transistores npn y pnp una herramienta para ambos,espero su respesta gracias Douglas dsd Caracas Venezuela

Nice idea, it can use for testing optocoupler

It works with 5 volt input!

Bhai meain optocupler ic ke bare meain sikraha hu aur practical karke working dekna chatha hu tho bhai ap batha sakthe hain kya video meain jo optocupler ic hain uski input pin ke liye kithna value ka resistance chahiye

Nice idea👍

mind blowing

Nice simple usefull circuit. Cheers from Indonesia

@TechIdeasAG

5 жыл бұрын

Thank you very much

@pradeepaes779

5 жыл бұрын

OHH IT IS NOTHING

@zahranmboy5654

5 жыл бұрын

Mantap ye ide nya...😀🙏

New to optocoupler, why does flash in the first place, could you explain. Thank you if you can

What resistors or capacitor do I need to make this a 12V and/or a 9V?

4 to 9 voltage working & 3 to 4 LEDs connect parallel ?

Super bro

Работает. Главное полярность резисторов не перепутать...

@user-sp7qp4ei5r

5 жыл бұрын

Полярность резисторов .👍👍👍👍

@user-fn7cn4ui8i

5 жыл бұрын

И синию изоленту.

Fantastic

Does it work with 6 volts?

Great idea keep up good work bro :)

Excellent

Optocoupler pode usar qualquer um ? ou só este modelo PC8017 ?

Hello, the circuit in video will work with 12V? I need to put that with a switch on my motorcycle to know when the switch (wich control pit lane limiter ) is at ON position. Thank you Bro 😌

@TechIdeasAG

5 жыл бұрын

Ofcourse, will work fine

@SwatLosAngeles

5 жыл бұрын

@@TechIdeasAG Thank you very much. Greetings from Italy 💪

How many leds we can blink on single Optocoupler.. ? Thank you

can you tell me which background music is there in this video

' nice kit... can use this a pack of 3 AAA batterys as 4.5 volts and mini switch... better white LED light

@TechIdeasAG

5 жыл бұрын

Yes it will work

Good, can we increase capacity of. Capacitor for slow blinking

@TechIdeasAG

Жыл бұрын

Yes we can

Well done

Flashing ki speed ghatane ke liye kitne ka capacitor laga na parega

How much LED we can use for that ?

Wow

What voltage are you using? If you apply another Led where and how to blink separate from green led.

@imnotbeluga007

Жыл бұрын

Lithium ion battery - 3 - 4.2V, nominal 3.7V. Around 3.7V.

Nice

Pls.. Make a video using 5 led light with on/off switch thank u

Bhai what changes to make in this circuit with 12v dc supply. इस सर्किट को 12 वाल्ट dc से चलाने के लिए क्या बदलाव करना पड़ेगा

Very good job. if i want to increment the frequency how can i do?

@TechIdeasAG

4 жыл бұрын

Use low value capacitor

@flaviobigliazzi1699

4 жыл бұрын

@@TechIdeasAG Thanks and have a good day.

So nice 😗😗😗

Is there any way to adapt 12V?

Excuse me, is it possible in 3v battery?

Sir can you help me? I need led blinker with quick on and slowly off.. thank you

Good

will this work on 1.5v?

Does it work with 4.5 volt

Excelent

Kitna volt se chalega .Ye adha audura video huaa

👏👏👏👏

que isso ....... 1000000000000 like demais mesmo

Thats good, you show the source of battery, but can I know how to control the faster of the LED?

@TechIdeasAG

4 жыл бұрын

Decrease the capacitor value

@imnotbeluga007

Жыл бұрын

You can also change the value of the 5.6k charging resistor, but I don't recommend using anything smaller than 3.3k, as it can damage your optocoupler.

...навесной монтаж...четко ясно понятно...куда только можно применить такую приблуду...

@werhoppp

5 жыл бұрын

Полиция в глубинке себе такую сирену ставит

@user-sp7qp4ei5r

5 жыл бұрын

Как вариант , украшение на рекламный щит .

Cap is is charging/discharging? Old stuff!

@imnotbeluga007

Жыл бұрын

Yeah, but with light emitting and sensing semiconductors.. relays were used in the old days.

Is it possible to use only one resistor? Because I'm using a 3v bat. And can't light a blue led.ty

@TechIdeasAG

Жыл бұрын

It'll not work using single resistor

@dardarrelt.7222

Жыл бұрын

@@TechIdeasAG oh okay,, so what do you think the resistor will work on blue led using 3v?

what voltage?

Is it possible to slow down LED frequency blink? Thanks!

@TechIdeasAG

5 жыл бұрын

Yes , just increase the capacitor value

@Obamjur

5 жыл бұрын

@@TechIdeasAG Perfect! Thank you Sir!

Thanks for Sharing. ;-)

@TechIdeasAG

5 жыл бұрын

Thanks

👍👍👍

Bhai eis 12v me kaise chalay,? please batiye

Can MCT2E optocoupler be used in place of PC817 optocoupler?

@TechIdeasAG

5 жыл бұрын

Yes, ofcourse it will work fine

@amitabheer

5 жыл бұрын

@@TechIdeasAG Thanks, dear you. Kindly guide me to make necessary changes if any while using MCT2E. Regards

817 and 817c will work

A cheap option to replace my 555 with single use 9v battery. 4v rechargeable battery will be the logical reason. I'm still wondering why bc547 blinker only work above 12v

@vencdee

2 жыл бұрын

Because the two pins circuits uses Tr break voltage not gate. And this voltage is usually 8-12 on common transistors. You must use gate-based (three pins) circuit... but in that case the strobe effect is not so strong because bipolar(linear) transistors have some forward resistance. Adding high-power optorelay or mosfet (which have minimum Dss resistance, usually under 0.1Ohm and currents in amps or tens of amps) into the circuit as an effective power-output may solve this problem - and you can use it even for very high-power cobb diodes or other high-power outputs.

What is use of capacitor ?

@Buzzhumma

5 жыл бұрын

Saurabh Suryawanshi timing

3.7 v work?

Song??

White led??

hi... can you please tell me how can i lower the blinking frequency on this circuit?

@techmonster2632

3 жыл бұрын

By changing the value of the 5.6 resistor

@siddharth4662

3 жыл бұрын

@@techmonster2632 thank you. 👍

12v R?

Can I use instead of "radcom 817b" optocoupler

@imnotbeluga007

Жыл бұрын

As long as it has "816" or "817" in its name it can be used. Any other letters are markings by other manufacturers.

How long does the battery work?

@TechIdeasAG

4 жыл бұрын

It consume very little power so battery will last long

Et si on branche 10 leds avec une alimentation de 12/15 V........les valeurs sont les même ?

@Flanlaina

4 жыл бұрын

mustang gt 500 Yes

good good

How much power consumption without the LED?

@imnotbeluga007

Жыл бұрын

The circuit won't work without an LED or any loading resistor replacing said LED. The capacitor's voltage will quickly exceed the trigger voltage of 1.1V, which if not discharged through some load will overload and later destroy the coupling LED. Around 20 mA. Theoretically, this circuit can oscillate at over 10 kHz if you use a really tiny capacitor, but you won't be able to see that.

please help im using power led 1 watt (3.0-3.3v). so what resistor and capacitor do i have to change?

@jokebox7

4 жыл бұрын

input 18650 (3.7v)

@TechIdeasAG

4 жыл бұрын

Hi friend, then it'll not glow in full power, because it uses only the capacitor's store energy. BTW you have to change nothing in this circuit.

@jokebox7

4 жыл бұрын

@@TechIdeasAG oke thank you sir

@TechIdeasAG

4 жыл бұрын

You welcome

The maximum input voltage?

@imnotbeluga007

Жыл бұрын

Forward voltage of an optocoupler is 1.1V at around 20 mA, so not much. This circuit works from about 3V up to 5V.

si vas a cortar asi los pines de los componentes mejor los reciclas de algun electrodomestico roto

does this work for 6 pin 4n35?

@imnotbeluga007

Жыл бұрын

As long as you have the datasheet, yes. But beware, the pinout is different!

Hi...Will this work on 12v dc input ?

@TechIdeasAG

3 жыл бұрын

Yes, you can use 12v

सर मेरा सर्किट काम नहीं कर रहा है सब वायर मैंने ठीक जोड़ी है प्रॉब्लम क्या हो सकता है बल्ब जलते रहता है नहीं ब्लिंकिंग करता है

Kalo untuk led 12 volt apa bisa mas

Can xc 529 replace it?

@TechIdeasAG

5 жыл бұрын

Yes, you can use it.

great

Can I use this curcuit for 24 watts LEDs???

@TechIdeasAG

3 жыл бұрын

Nope,

@swapniltayde09

2 жыл бұрын

@@TechIdeasAG 12V LEDs?

NOW DATS SIMPLE ....................

Aur kay karna chahe ye

with a 5mm led can or no sir/(dengan led yang 5mm bisa apa tidak pak)

@imnotbeluga007

Жыл бұрын

Of course it can. It's an LED. It will draw a bit more current but nothing horrible.

Like)))

Background music please middle volume