Strobe light effect with 1 transistor

[@elias-rn6mx]

This guy is making real things,and he even answers to questions to explain his projects.for that reason.I subscribe.

[@TechIdeasAG]

Thanks very much

[@SixOThree]

Where is his explanation on how this works?

[@oo0Spyder0oo]

@@SixOThree In the circuit diagram.

[@Subswithnovideos-gv9qi]

@@SixOThree capacitor charges itself through battery, and transistor consumes capacitor's energy and convert the electrical signal to turn on the led, as much long power is hold by capacitor, led will be "On", once capacitor is fully discharged led turns "off" and capacitor charges itself again, and the cycle continous to infinity, that's what we call "blinking of led" the purpose of resistor is to glow led without burning it

[@okaymalik8064]

Is it possible using three or two light?

[@acmefixer1]

This 'negative resistance' oscillator uses the transistor's emitter to base in breakdown mode, which is to be avoided because it degrades the transistor. This circuit is never used in any mass produced equipment because the transistors are not tested and were not designed to be used in breakdown mode. It must be avoided to prevent damage.

[@ngusi1st]

@Acme Fixer: I don't think so. Assuming the LED chokes 2V, then breakdown voltage of the transistor is max 10V, so max current thru C-E is 70mA (limited by 150R resistor), not enough to kill the transistor.

[@orangeshaw2370]

03:05 I would suggest a 1N4007 in series with the 3K3 Ohm resistor sothat )I electrolytic capacitors could be safety used.

[@VR2ZXP]

Let me try to explain how it works. By RC = t, 3.3k resistor and 100u cap forms a time constant around 0.33s. When the cap just be charged, voltage of cap is lower than the acceptable reverse voltage of the VCE of the transistor. CE of transistor keeps open circuit then LED is off. However, once the cap voltage reaches over VCE, transistor becomes short circuit. It turns on the LED and also discharge the cap at the same time to complete one cycle operation. However, this circuit just works in high power supply voltage and the transistor may be damaged after a long time operation. To make this circuit more reliable, the transistor can be replaced by a zener diode, then using a NPN transistor which drives from the net between zener and LED to discharge the cap.

[@darkshadowsx5949]

I agree with the zener diode. the transistor isn't doing much other than acting like a diode. base isn't being used switch it on/off.

[@casper2501]

That's what I looking for :D explained very well and without this shitty music. Thanks [°√•]

[@RC-Heli835]

Do you have a schematic of that? Thanks!

[@earlskie2u]

a pc817 optocoupler is more heavy duty and will work from 3-24v dc power supply too

[@downtowngutter3875]

All these fun little projects on youtube make me want to invest in some tools lots of tools

[@kenmoriyama7566]

I love the ideas and I really like it! Simpoe and easy! Thank you. But, is there a way to power on in 3v-3.7v battery? What changes will be needed?

[@gb5uq]

Changing the value of the capacitor alters the time constant increasing or decreasing the rate of flash.

[@erbenton07]

Perhaps we could skip making music videos and actually explain stuff by talking?

[@gorillaau]

English may not be his first language.

[@oo0Spyder0oo]

No need for the talking but no music I agree on.

[@erbenton07]

Then get assistance from someone who is a native English speaker. The vast majority of people watching youtube speak English.

[@MokenaBob]

I agree

[@alescitocp3802]

@@erbenton07 r u fu....in' nuts? spanish is , actually😝😛😝😛 go get a forest and get lost ! 😁😁😂😂

[@jim8916]

your presentation skills are getting better. nice little project.

[@richardjeun]

Collector is on the right side and emitter is on the left side; I think you need to switch the C and the E on the video. I never knew a transistor allows current to flow without any current to flow through the base.

[@Alan-yd5pc]

Not on a BC547, it's opposite of a 2N2222 from what I've seen online.

[@imtheroboart]

Always connect the negative terminal from the supply first to the circuit :-)

[@Kacper-ch9ds]

Why? Lol.

[@JamilKhan-hk1wl]

This is not 10000v 100a supply

[@imtheroboart]

@@JamilKhan-hk1wl Not necessarily. Even a 5V supply is enough to burn your components and damage your board.

[@JamilKhan-hk1wl]

@@imtheroboart not if there is current limiting resistors

[@calvarycustoms6681]

Jamil Khan Wait, you’ve never seen a resistor flash-fry? 🤨

[@rahulbindhu]

Good content bro, love from kerala

[@adithyanv103]

ഹായ് 🤪

[@calvarycustoms6681]

That looks great! Excellent strobing effect! 🚨👍🏼

[@eCitizen1]

It would have been nice if you had explained why it works.

[@cosmogrid]

That looks like an Esaki oscilator you can check it out

[@eCitizen1]

@@cosmogrid - Thanks for that info. Transistor saturation is pretty cool.

[@davidjohnston5329]

Thanks for that, my limited knowledge of electronics didn't help me understand how this circuit worked.

[@eCitizen1]

@@davidjohnston5329 - I looked it up and this transistor is being operated in a "avalanche relaxation oscillator circuit". Many transistors can be damaged by this, but it's still a neat trick.

[@earlskie2u]

@@eCitizen1 i found another blinking led using optocouplers and lesser components as well and can work from 3.5v- 24 v supply but I don't know if it lasts

[@PerrynBecky]

If that cell is a Li Ion cell, it needs to have a bms chip to avoid excessive discharge which would risk explosion or fire. They can be had even for a single cell, and are very cheap. A couple of dollar "insurance policy" can avoid those risks.

[@sawajiri100]

Can be use for RC PLANE nice 👍

[@learnmore6760]

Hhahahah 😂😂 input 12v rc main kahase layega re baba

[@sawajiri100]

@@learnmore6760 change value of resistor from 3.3k to 2.2k ohms for 2S Battery 7.4V

[@joeycarr1398]

WHY NOT?

[@sawajiri100]

@@tylerjames1716 fuck off your market style. Money? You can build from scratch noob!

[@CXensation]

@@joeycarr1398 The circuit here only works with battery voltage above the transistors reverse breakdown voltage, which is something like 5V. (Note that the transistor is connected in reverse polarity on purpose for the circuit to work) Also the timing is highly dependant on the supply voltage. Thats why sawajiri100 suggest a different resistor value of 2.2K to still have a decent blink rate on a 2S battery. A 1S battery in the RC hobby world is one 3.7V cell LiOn battery, hence a 2S battery is 7.4V.

[@FredtheDorfDorfman1985]

Someone has probably already answered this I'm sure, but isn't this avalanche pulse generation? The transistor rapidly conducts current when the voltage across the capacitor reaches the collector-emitter avalanche voltage. I thought the capacitor in an avalanche pulse generator had to be small to keep the energy from causing the PN junction to fail? Does this having the emitter connected to the positive plate, instead of the collector, have something to do with keeping that from happening?

[@souravbhattacharyya3392]

Working fine... someone please explain why the base terminal is not connected to the external circuit.

[@muratkayaaltn3545]

A very nice work. I have a question! Can we burn more than one led diode with this circuit or a different circuit? Thanks.

[@leonidaslacayo4520]

If same question how many led can be added to this circuit?

[@earlskie2u]

I have the same question which I think most of us wanted to bring some cool looking to our rc planes and helis and 4x4s.. Its time for me to have experiment when I receive my electronic parts from ebay and amazon..

[@jimgreen1525]

I have all the parts and hooked up. No strobe effect. Followed instructions as indicated on your KZbin video. Please advice as to what I'm doing wrong. Very much like to have a few of these to light up my model StarTrek Starships. Thanks for your time, Jim.

[@TechIdeasAG]

Ok, you've done alright, now just increase the input voltage to about 13.5 to 14 volt.

[@jimgreen1525]

I figured another way. Put the 150 ohm in place of the 3.3k. Then removed the 150 ohm and put a 75k in it's place to run off of 12v.

[@earlskie2u]

Will it work the same flash & illumination if you add 2 more led in parallel conmection?

[@Creativity_DIY]

Must be tray to make this ideas. Love it 👍 and Thank You 🙏

[@earthsearchers7160]

Hey, the music is repetitive and annoying. Every dam video has the same distraction. But good work 👍

[@acmefixer1]

So? Turn it down or off! 😕

[@nhatnguyen_zen]

True.

[@noelmuscat6654]

I really like your ideas. How to do a circuit like this with 15 reds LED and 12v supply? Thanks

[@TechIdeasAG]

Not possible

[@Aniketkarhal]

12v led use kr skte hai....

[@Upumssaifai1]

12v light use kr skte hai....

[@Perepodvyvert_s_perevorotom]

Avalanche breakdown. Nice illustration.

[@SureshKumar-nk2ok]

sir pls explain how its avalanche breakdown

[@peatmoss4415]

It's called an Esaki oscillator. And a diode works better than the transistor because the transistor takes a beating...

[@mynameisbond711]

Great, is it what I was looking for, how many LEDs can be connected to this system? How many volts does it work with?

[@sukh11625]

Good morning very good Bhai kya ise hum bike pe chala sakte hai

[@TechIdeasAG]

Ofcourse

[@jayakrishnanpvm1]

Can you make it 10watt led strobe lights

[@maximuspareo]

Wow , you are very generous giving us all those informations (meaning all your projects).For an 50 W (maximum) led outside projector with sensor, what modification should I do?Thanks.

[@INVERTERize]

The base of the transistor ar not connected how it will work

[@amandhakal8939]

I am thinking same... 😁😁😁

[@michaeltayon9184]

LOL I just posted a comment about this too, it's an RC circuit anyway, but the base is exactly what makes a transistor, a transistor, an electronic switch, so WTF? LOL

[@moodberry]

What if I want to have a super bright strobe? Can you do a video on that?

[@anikettripathi7991]

No work is small. Happiness is similar if we succeed in making small projects or big rocket.

[@deepakchoudhary-dc]

6v ki battery se use krna h to kya krna pde ga bro plz reply....

[@TechIdeasAG]

It will not work on 6v, needs above 12v

[@gbenother8755]

That's a nice simple timer circuit. Let's see it on a little circuit board instead of this "mid-air" style of construction. It's kind of cute, but if I'm mounting three of these to my RC plane, I'm looking for stable mounting, not a floppy gob of parts. Or do you pot it in RTV for rigidity?

[@jimdreger4626]

Are you saying that you have the ability to build an RC plane, but you can't figure out how to stabilize a few electronic components?

[@sprinklersystem3102]

Hi , i have a doubt that how transistor switch power without its gate terminal trigger??

[@swapnilbandgar5477]

same doubt here...

[@santanusaha2241]

Forward breakover voltage is breaking the depletion layer and thus current flows.

[@CXensation]

@@santanusaha2241 It is in fact the NPN transistors REVERSE breakdown threshold voltage that causes a current flow and avalanche effect to discharge the capacitor through the LED. For general purpose type silicon signal transistors, the reverse breakdown voltage is in the region of 5V - 6V.

[@santanusaha2241]

@@CXensation Thanks a lot for explaining. Your explanation is 100% correct.

[@joeycarr1398]

I went back to the video and sure enough the gate is free. 1st time I see that I haven't seen it in laptops.

[@Mixanga]

Whats the durability of this circuit, will the led stop working sooner beacuse of the flashing?

[@TechIdeasAG]

Nope, it will work very well

[@gaets04]

This will work perfectly on my Airplane ✈️ models. Can you please show me how to make the same thing but a double strobe ? Shown on the ends of the wings of a 747-8 Jumbo.

[@vojtechkovac967]

hi did you use a normal led diode at 2.5 or 3 volts or 12v Can i use led strips at 12v?

[@TechIdeasAG]

12v led wouldn't work

[@derdrolftesinn]

Thanks for the Video. I wonder how the circuit works when no power is on the Base of the transistor,so the citcuit between C and E is open permanently.. can you help me understand? Greetings

[@TechIdeasAG]

actually the circuit abuses the negative resistance factor in all transistor to produce the blinking effect. Here a common NPN transistor is used. When Switched On the 3.3K resistor charges the 100uf capacitor until the voltage become high enough to get emitter-base junction to avalanche. At this moment the transistor turned on quickly and the capacitor discharged by led through 150ohm resistor, and when voltage across the leads fall, the current stops, then the capacitor again starts to charge through 3.3k resistor. Thank you

[@derdrolftesinn]

@@TechIdeasAG Thank you very much:-) that helped me :-)

[@earlskie2u]

@@TechIdeasAG what will happen if we add two more led in parallel connection.. I am curious if the lights of the three leds illumines well.. appreciate your response. thank you

[@jeremyli2871]

If you wish to have Tesla's inspiration turn off sources of noise when you work.

[@revoxjazz]

Very well commented, bro! 100% agreed!

[@jamalkawabata2189]

Can i use it for 9v ?. and im gonna add 3 LED's at the same time , it will work ?.

[@kc5hgv]

Us Motorcycle guys need help with these. Can you use the clear LED and focus it with a lens so we can put this on the front of our bikes for visability.

[@waruna_d]

saved it for watch later bro nice!

[@soldevida8379]

Can I reduce the input v by removing the resistors?

[@TechIdeasAG]

Will not work below 12v

[@engestruturas]

Nice video! Can you explain how transistor switchs on and off without variation of potential on its gate?

[@deepakpoojary01]

Which type of electronic shop has these bc547 and other components sir?

[@aksmadness8705]

Hey how can I blink my 220f tail lamp like the same way, can I use the same circuit directly to a12 volt dc battery of my bike..?🤔

[@starkship7018]

Use realy

[@pravasbehera6571]

I think that 12V supply charging the 16V capacitor and when it discharge the bulb is blinking. but durring charging there's no current flow through bulb because of resisters.

[@maciejjanicki8385]

The ultimate transistor burning machine.

[@Ringtones32]

Kya ispe 2 led chalegi ek saath ??

[@gianfiat8426]

Its fantastic! Many thanks!

[@kaustubhthomare9488]

How to increase / decrease the time between two flashes?

[@gonvindecoupe8685]

good evening you liked the green led. great videos happy New Year

[@liemhingkik]

Thank you for the video. I am nubie in electronics, I tried and did like what you showed, but it worked only if I touch the led's plus pin with one of the multimeter needle. May I ask what seem to be the problem?

[@chetananam475]

Check the soldering if you do not have much experience in soldering .Erratic behaviour of the circuit is possible in case of wrong or loose connection.

[@liemhingkik]

@@chetananam475 ok. Will try again from start. Thank you.

[@moldowin]

Bought an airplane to take that transistor out and complete this video tutorial

[@kennethkustren9381]

As a gift to all Amateur and Professional Electronics artisans, working boardless has advantages. Minimalist designs are beautiful. I wonder only why force 12V on us ?? 6V or less won't work ?? A pair of Crafters wire bending pliers might be a GODsend. Two pair even better.... one smaller, one larger ?? Another tip ... the Weller pen version of soldering iron works nicely with EXACTO BLADES.... cutting shapes and openings in plastics, shall never be gory. Be Careful... Cuts and Cauterizes too !!

[@michaelbradley7621]

Aren't you operating the Transistor in breakdown mode here?

[@TechIdeasAG]

Yes, you're currect

[@dwaynemags3871]

I follow this idea last night but it doesn't work... I'm so sad

[@9W2KEY]

me too, 2 time try, but still doesn't work, sad too

[@helgahuven1628]

COOL . SIMPLE E MUITO BEM EXPLICADO E MONTADO . PARABÉNS . VALEU

[@bam-o5l]

How to adjust the speed when blinking?

[@nick5115]

Love the strobe!. Can you provide materials and steps to make it? Also Can you adjust speed (make it slow) blinking? I am subscriving.

[@Fmacian59]

Oscilador por saturación a ruptura o avalancha, ¿es cierto? Buen video, gracias.

[@ivanperezs]

Cierto. Carga de C a través de 3k3 que determina junto con valor de ruptura la frecuencia de oscilación. Pico de descarga de C a través de la otra rama al alcanzarlo. Se obtienen unos pulsos extraordinariamente estrechos.

[@Fmacian59]

@@ivanperezs Gracias Iván. Por cierto, ¿no acaba dañándose el transistor?

[@ivanperezs]

Yo nunca lo he implementado así que no sé cuanto tiempo podría funcionar. Los fabricantes no dan información acerca de este modo en las hojas de características. Yo creo que no es perjudicial a estos niveles y se puede hacer un cálculo térmico sencillo. Que yo sepa la conducción por avalancha no es destructiva si se limita la potencia. En este caso es fácil ver que la potencia es muy inferior a 40mW (suposición de que la tensión y la corriente fuesen máximas todo el tiempo lo cual no es cierto ya que son pulsos muy estrechos; parece que brilla más tiempo del real por el tiempo de respuesta de nuestro sistema visual). Estes transistores soportan muy holgadamente esa potencia. Si bien los picos podrían ser destructivos incluso sin aumento de temperatura, estos picos son de solo unos 4 mA. Por otra parte, he visto videos con niveles de tensión en torno a 100V con otros transistores claro, puedes invesigar...

[@mr.mythoclast4451]

I like the old Method by using a Voltage Multiplier Circuit, then you can flash a LED even with a AA/AAA (rechargable) Battery

[@soldevida8379]

Can u give the link for that video

[@Fmacian59]

Oscilador por saturación a ruptura o vavalancha, ¿es cierto? Buen video, gracias.

[@acex727]

Now i am going to make my own home made plane with strobe light😅

[@huanphamba858]

Thank you so much, it's thanks to you that I did what I wanted

[@nistaspec]

Can we make this to blink every 10 seconds?

[@urmilagp4682]

Any problem of changing Supply volt... Can use 3.7v, 7v, 9v, is it work correctly...? Plzzz rplyy

[@alibehrouz9833]

how does it works? without triggering base?

[@NickBarban]

Could you run this off a sr2032 coin battery at 3.3v or would the resistor value need to be dropped?

[@ModellingIndianRailways]

Very simple and nice

[@ganeshshrestha7887]

Can we connect it on motorcycle???

[@amitabheer]

I had already contructed the circuit with VRs too instead of Resistors to observe the blinking effect and is working fine but very strange fact I could notice but couldn't find the exact logical reason behind the issue. When I use ordinary BC547 the circuit works fine but I used the same transistor from leading manufacturers the circuit even didn't start and each and everytime same result obtained. Can anybody let me know the reason??? Thanks in advance.

[@eugenealemania778]

What are the materials? is it easy to do?

[@shreyasmathuria732]

I tried this circuit on bread board. Didn't work. Checked connections again and again. What could be the problem? FYI i am applying 9 V instead of 12 as mentioned in the diagram / video

[@marcojaric4030]

hi. I need this strobe light but powered by a 2s lipo, 8,4 v fully charged. It will work? Thanks

[@moodberry]

Would your circuit work with a super bright white LED? I want something that can be seen in sunlight to light up a drone in the sky. Is it do-able? Thanks.

[@TechIdeasAG]

Nope, it will not work in your condition

[@moodberry]

@@TechIdeasAG Thanks.

[@akashpatil6593]

Can we use it for motorcycle

[@maahir3871]

What does a resistor doing in the circuit ? I know it resist the current. But how is it helping the circuit ? i really wanna know

[@umeshshaw9518]

6 volt चलाने के लिए क्या करना होगा

[@jayarathnajayarathna786]

can we add 4 other LEDs to this?

[@dimitas7052]

Hola el montaje no esta igual que el esquema del circuito, por ejemplo el led va directo al colector y en esquema va a traves de la resistencia de 150 Ohmios

[@yononable]

superb tutorial..thanks a lot.

[@froilanlagmay7433]

I am not familar with circuits and bulbs, can u pls tell me tha name of that tiny bulb, and hiw much volts and ampheres. Thank u.

[@ASMRCulture]

It's just an LED. readily available for usually a few pence and in that format take around 3V. they act as a diode, and as such only work when the + and - connections are the correct way around. They should have a resistor in line else they will blow up due to having very low self resitance. the resistor value works to set the current so a higher ohm resistor will result in lower current flow and less light output. Hope this helps

[@aaronletchford]

Bloody fantastic thanks

[@andyneipert2527]

Wair can I by stuff make my own strod leds?

[@vikashkrroke1684]

4 led lagau to support kr jye gaa?

[@ImranKhan-gz6gf]

I made this as showing in video but led doesn't blink powered by 12v smps computer power supply. Transistor Emitter leg receiving 12v but Collector leg shows only 0.6v. Any idea what problem is...?

[@TechIdeasAG]

Please use slight upper voltage, i mean 13v, then the effect will start.

[@بلبلالشمري-ت7ذ]

I want to make the same scheme but voltage 24 V. Dc What needs to change

[@fandru5538]

The schematic is not right. The 150 Ohm resistor is placed between the Led and the condensator, , not between the LED and the 547. Right ?

[@fandru5538]

OK, thanks. It works with A 12 v battery, not a 9 V. Do you know why ? I try to put a 2.2 KOhm resistor, in place of the 3.3, but it doen't work...

[@GODAXEN]

@@fandru5538 to low voltage, it needs more than the led (aprox 3v) + transisistor Vbeo (6v) + transitor virtual diode in collector-base (aprox 0.65v) that sums 9.65v to work, this is a approximation as I don't know the specifics of the diode, more realistically it needs a minimun of 10 to 10.7v to work.

[@fandru5538]

OK, thanks a lot.@@GODAXEN

[@christurner2783]

@@fandru5538 the "avalanche" voltage of the BC547 was not reached. See Vebo in the datasheet.

[@fandru5538]

Thanks for the answer.

[@tomference4618]

..can we do this circuit at 5vDC ?

[@damiandworecki20]

Ideal para la moto y chau relé gracias por el vídeo.

[@wuliyono8125]

Itu LED biasa apa led udah berkedip

[@jitendrapastaria]

What changes need if we want to add 50 led

[@prashantsakate9986]

The 12v you use it is it DC OR AC

[@TechIdeasAG]

12v dc

[@prashantsakate9986]

@@TechIdeasAG thank you

[@astronic4522]

Nice project

[@Hemantgora]

Total cost kitni padegi bro if i use 3 watt led bulb

[@markaroncruz3614]

What kind of 12v battery can be used

[@revimfadli4666]

A certain flashlight maker uses this circuit but with a much higher, invisible frequency. It's claimed to save battery