220v to 12v without transformer

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Күн бұрын

Hello friends, today in this video I have shown how to make a 220v to 12v converter circuit. Please note, this circuit is not isolated from mains so don’t touch any naked wire in this circuit when the circuit is plugged in.
If you want to increase the brightness of the led use 10W led and 2.2uf ceramic capacitor in place of 1uf. This capacitor must be rated 400v or above.
Li-ion charger circuit using 1 transistor
• Simple li-ion 18650 ba...
If you have enjoyed this video then please like, share, comment and don't forget to subscribe.
Thank you very much for watching

Пікірлер: 709

@TechIdeasAG 4 жыл бұрын

Li-ion charger circuit using 1 transistor kzfaq.info/get/bejne/erWUndt3tcquY2w.html

@kabildev1 4 жыл бұрын

@arogaming8568 4 жыл бұрын

Bhi es board sa kitna light ko jala paya ga???

@dolohbaesa718 3 жыл бұрын

ทำแบบนี้ได้พลังงานกี่ w ครับผม

@matthewmatthew5123 3 жыл бұрын

can it also be used on the contrary?

@hirasaqib2816 2 жыл бұрын

@@pankajgaming723 no

@Blade0983 4 жыл бұрын

WOW! I saw this circuit in a book from the late 60's. I used it to replace the light bulb in my parents' fridge 20-ish years ago. The "light bulb" was salvaged when the old fridge was discarded and now is installed in a night light lamp. No houses on fire until now...

@leonelbarrientos995 3 жыл бұрын

Looks like I have stumbled upon an ancient knowledge... gotta have more..

@KelvinsurajRepairs 2 жыл бұрын

@@leonelbarrientos995 xD

@f.k.burnham8491 5 жыл бұрын

When using diodes with shorter than original lead length, you MUST reduce current rating of the diode, per Sylvania ECG Engineering staff. Solder should be applied to the joint, not put on the iron and transferred to the joint. That circuit should have a fuse in it also. Very dangerous construction to use it that way. We often use a capacitor of a certain size to reduce AC voltage input to antique radios that originally had resistance line cords.

@susantpal 3 жыл бұрын

Thanks for the video clip but if you had used a multimeter to show the output it would have been complete. Now, please tell me how much Amp current it will output?

@oilbay54 4 жыл бұрын

Two bottom side diodes of the bridge should be 27 V /1.3 W zener. There must be a 100 Ohms 2 Watts resistor serie connected to 1uF capacitor. This capacitor should be rated to 400V AC at least and type X2 (ask your component dealer) Otherwise you get a very good explosion after a short while. This circuit was used in the past even by Siemens for space constrainted applications. It is stil used by some Chinese and Indian manufacturers in cheap LED bulbs. Even there is an IC which utilizes this configuration. And yes, their lifetime is very short

@8BB76E1 5 жыл бұрын

I've been using simplified version as mains indicator. just with small red led (like 2 mA current) and although it's nice little circuit, with justified use in some cases, I wouldn't recommend it to people without experience. it's really dangerous, and you should know the necessary precautions to use it..

@niranjankumardey6318 5 жыл бұрын

And should use one 12 volt 1 watt zenner diod parallel.

@lazyh-online4839 4 жыл бұрын

Not with the led they shouldn't. Any other circuit I would agree but definitely not with the led.

@tubfragr2270 3 жыл бұрын

@@lazyh-online4839 Why we do not need it with the LED? How the O/P voltage is 12V now?

@lazyh-online4839 3 жыл бұрын

@@tubfragr2270 because led require a current controlled power supply, not a voltage controlled. The "resistance" of an LED is highly dependent upon temperature, the hotter it gets the less resistance it has which means more power flows through it which means it gets hotter which means it resists less, more power, hotter, resists less, more power, hotter, on and on. It's a runaway effect until the led blows up or dies, so controlling voltage doesn't do anything for an led, so a zener is pretty useless. Also a zener of that size wouldn't work for those power levels anyways. A capacitor can only be charged up a certain amount for a given voltage, after that the capacitor is "full" so the cap can't pass more current than it can store for each cycle, this current limiting is how the led doesn't overheat like if it was getting constant voltage like a zener would do.

@lazyh-online4839 3 жыл бұрын

@@tubfragr2270 also, most leds like this have a 32v forward voltage, so a 12v zener wouldn't even be enough anyways.

@tubfragr2270 3 жыл бұрын

@@lazyh-online4839 But what limits the current here then?

@user-zk7pl2ht1g Жыл бұрын

You are not informing with positive and negetive. I do and blast it💥💥

@Harshavardhan-zr2ip 4 жыл бұрын

Nice, But please make a video How ceramic capacitor convert 220v -12v mechanism clearly

@Siberia55rus 4 жыл бұрын

Третья рука креативная! Клево👍

@Bazzawombat 5 жыл бұрын

The reason I placed a thumbs down is because this circuit will KILL. If you are silly enough to connect directly to mains, then use a total of 4 capacitors. Use 2* 4.7uf ceramic caps in series in each leg, so, if any one capacitor goes short, live mains is not connected directly to the LED's. use 2 * 4.7 uf in series in neutral leg, 2 in active leg, (capacitors value's halve when connected in series. total capacitance in circuit connected to mains is 4.7uf /4 = 1.75 uf. much safer. Also, FULLY ENCLOSE circuit in insulated box. LIVE circuits make DEAD men.

@igorturchinyuk151 4 жыл бұрын

Many young radio amateurs who will try to repeat this electric circuit will be killed!)))

@heyderaliyev8976 3 жыл бұрын

How do you think is it that Resistor was reducing 220v AC down to 12v AC or something else...???

@tomtaylor3872 4 жыл бұрын

No, this is a really poor idea and I would discourage anyone from attempting to build. The output is dependant on the load - you have no way of regulating here, which is what you imply from the title! You also have a 25v electrolytic which would be stressed with that same over-voltage. As you mention in the video, this circuit is dangerous as it is mains referenced - why on Earth (pun intended) would you not want a transformer? - they’re cheap enough... Even safe switched-mode supplies are cheap as chips now. I don’t believe you really understand this circuit, which is why you don’t explain its operation and you shouldn’t show people how to play with fire 💡🔥⚡️🤡

@kennmossman8701 4 жыл бұрын

I am sure he has NO IDEA what he is doing

@justassimple8328 4 жыл бұрын

@@kennmossman8701 It's actually a capacitive dropper circuit, although is dangerous but is cheap to build. The only problem that if there is no load, I would say it will explode the capacitor

@kennmossman8701 4 жыл бұрын

@@justassimple8328 I counted THREE MAJOR MISTAKES and two less major mistakes. IT IS OBVIOUS TO ME THAT THIS GUY IS A CLOWN - JUST A TOTAL BOZO. PLUS!!! the construction is appallingly BAD! Welcome to Tech Ideas where I have no f*cking idea what I am doing - follow me at your peril !

@tomaszswiatek8047 4 жыл бұрын

Butcher with no idea...

@lazyh-online4839 4 жыл бұрын

Though he didn't build it right, this is actually a very common power supply design, lots of cheaper electronic components like iot buttons and the like often use them because it's way cheaper than their a transformer or a smps. In a way the capacity of that first capacitor limits the current available based on the ac frequency and internal resistance, which is why an "unregulated" version like this actually works pretty well for high power led supplies. Besides that the main issue is chosing a properly rated capacitor (they're specially made for this kind of application, but still cheaper than anything else) and using zeners to regulate the voltage down.

@sergiojuancha 5 жыл бұрын

Рассаду отлично досвечивает.

@tform1 5 жыл бұрын

Конопли?

@besnw 5 жыл бұрын

I thought it was a dangerous circuit. If the LED is disconnected or misconnected, it will destroy the electrolytic capacitor

@lazyh-online4839 4 жыл бұрын

Yep, and with the led he doesn't even need the cap there in the first place since our eyes would filter out the majority of the flicker.

@hansukumar1309 3 жыл бұрын

Sir, very nice. Sir, what is the value of resistor 100 ohms ? Watt how much.

@santecutatso5505 4 жыл бұрын

Ten zasilacz daje prąd około 120mA, czyli około 10 razy mniejszy niż prąd nominalny diody LED. Moc to 1W zamiast 10W.

@jimparsons6803 5 жыл бұрын

Liked it. An inexpensive, practical solution that could be used to power other low voltage projects too.

@morpheus6749 5 жыл бұрын

It's neither inexpensive nor practical, unless you're stealing your AC power and don't care how much power you waste. There is a reason that even the cheapest power adapter uses a transformer. Take a basic circuits 101 class if you're actually interested in learning something.

@rayford21 5 жыл бұрын

I wouldn't bet on it.

@user-dp9tp6hj7r 5 жыл бұрын

Диоды моста в опасности - нужно ограничить пусковой ток при включении с разряженными емкостями, включив на входе последовательно резистор

@dipperpines6868 4 жыл бұрын

А как же развязка по U?

@die_hertz 3 жыл бұрын

Нашел такую схему в "вентиляторе от розетки", причём продавался в США под видом made in us. Видимо тоже китай

@BeRight4u 4 жыл бұрын

Very good Many casual do circuit videos and handle ac current casual holding it.its a bad think.kids watch.they will be misguided.ur good in informing and putting a tester to show the live current.well done

@rafaelcabelo6616 5 жыл бұрын

Becarefull, this circuit does not step down the main 220V to 12V! It only holds the current.

@raychan1123 5 жыл бұрын

Rafael Cabelo true

@snehalmahulkar2608 3 жыл бұрын

Superb DIY Comment after making and using this kind. Best 👍

@santecutatso5505 4 жыл бұрын

Przy wewnętrznym zwarciu w kondensatorze 1uF, a także przy przepaleniu LED, wybuchnie kondensator 220uF, od zbyt wysokiego napięcia na jego końcówkach (powinien być na napięcie przynajmniej 400V). Zalecam szczególną ostrożność z tym wynalazkiem...

@RajKumar-ci7dg 5 жыл бұрын

Your idea is good but no precautions & 1-what is the value of ac ceramic capacitor how much voltage for that 2-Resistance 1mega ohm how much watts 3 - what is the running current so that u can calculate voltage drop across resistance accordingly u will connect resistance to have 12 volts output

@ramv9589 5 жыл бұрын

Google it "transformerless power supply" u can't take more than 100mA. It's completely failure. X rated capacitor blasting in 30 mins continuous run.

@souravbhattacharyya3392 2 жыл бұрын

Ceramic 105 j or k 400-450 V, 1 Mega ohm 1/4 W, always connect phase with the open end of the ceramic to avoid electric shock at the output...use a 3 pin plug to ensure fixed live and neutral position,always use 12 V zener 1/2 W or 7812 voltage regulator IC(with heat sink)....put circuit inside a plastic or MDF board box securing it with double sided tape or hot glue.......I use such capacitor drop bleeder circuits regularly with absolutely no problem (apart from low output ampere) if you follow these safety measures.

@RajKumar-ci7dg 2 жыл бұрын

@@souravbhattacharyya3392 ji thanks for reply, plz tell abt the formula, for calculations of this circuit, why u have taken 1Megaohm 1/4 w resistance? Why not with less value or more &why 1/4 w? Why not 1/2 or 1watts, resistance, similarly for 105j capacitor of 400-450volts why not some other value, with 250volts ,

@souravbhattacharyya3392 2 жыл бұрын

@@RajKumar-ci7dg the ac supply sometimes goes above or around 240 V,so unsafe to use 250 V ceramic in case of an ac spike, if you use less than 1 mega ohm it may not be able to discharge the ceramic fully when circuit is off, you may use it for higher watt,but 1/4 W serves the purpose well....for further safety you may use a 100 ohm 2 watt fusible resistance at the input side....so far as the calculations are concerned we take help of Ohm's law which is not fully correct since each resistor has got its own self inductance value which is not easy to judge and hence to judge the impedance from R-L phasors,also the diodes being semiconductor devices donot exactly comply by Ohm's law.....use a 3 V LED with 1 K in series at the dc output as an indicator

@RajKumar-ci7dg 2 жыл бұрын

@@souravbhattacharyya3392 ji thanks for reply voltage for ac supply is clear but how u calculated 105j for it &regarding resistance also not clear how u calculated the value as 1 Mega ohm, capacitor discharges as, soon as the resistance is low or no resistance in parallel, if u connect higher value resistance in parellel to it it takes time to discharge, moreover capacitor &resistance in parallel are coming in series with main supply so some voltage will drop across it depending upon the output load, that's why I requested u to plz tell abt the formula to calculate the value of resistance &capacitor bcz as the load increases or decreases some voltage will drop across capacitor &resistance, moreover how much max load can be connected across output, plz tell.

@alexissandoval8803 5 жыл бұрын

Por fin un video donde muestra paso a paso con las referencia y coneciones de los materiales felicitaciones...excelente

@tomasbarrantes7219 5 жыл бұрын

Gracias por sus vídeos nos ayudan mucho .quería regular la corriente de una moto que tira aprox 90 voltios en ca y quería bajarla a 12 o 14 voltios pero en cc para que el pito suene bien y no se dañe .le agradezco su gran ayuda .Tomás de costa rica

@jaystanjones8869 Жыл бұрын

Very useful nice circuit . Thanks for presenting.

@anthonylebug8843 Жыл бұрын

can i connect the 220v side to an air blower and the 12v side to motor battery

@fransiistaken 5 жыл бұрын

nice video sir

@user-tq3pe8gi3k 5 жыл бұрын

2:36 Цепь не изолирована от электросети, поэтому не прикасайтесь к цепи, когда она подключена (кто не знает это перевод на русский язык) Причина: удар током. После удара тока умирает человек, поскольку 220 вольт и может быть опасно. Рекомендуем купить защитные средства от удара током.

@grisha1130 5 жыл бұрын

Главное не Забывайте что это без трансформаторный бп и нету гальванической развязки ⚠️😊😉

@khaledadora 5 жыл бұрын

what is Ampere Out ?

@musabmohammed7973 6 ай бұрын

I now know how to make fire crackers with resistor 😂

@edwardfoehring8827 5 жыл бұрын

I tried arc welding with this circuit thank God for gloves and good face protection.

@lazyh-online4839 4 жыл бұрын

Not the brightest move there buddy.

@phitrow 5 жыл бұрын

Yes, I use this chem too, and it may be works many years.

@misterextechnician8614 3 жыл бұрын

You are so amazing creator

@vinaytechintelugu Жыл бұрын

Actually in that bridge rectifier you can use 25v 2200uf capacitor, it's best for that bridge rectifier.

@mkxlrider5780 3 жыл бұрын

Thanks for this tech idea bro👍

@ameetrai5245 5 жыл бұрын

Led will not be work for long time without heat sink

@stevenharpervw 4 жыл бұрын

I think people are missing the point, it was an experiment to show a wheat stone bridge being used to convert AC to DC and not use a Transformer.

@antoniussegala7658 4 жыл бұрын

Mantap bossqu.. 🤝🏼 👍 Sukses selalu

@patricioluisponcedeleon3012 5 жыл бұрын

Very interesting thing, you are "capos" in electronic!!!!

@qweqwe-kd4yc 5 жыл бұрын

good job. hello from Turkey.

@TechIdeasAG 5 жыл бұрын

Welcome bro

@Elmacik1 5 жыл бұрын

Merhaba 🙂

@returntothetruth1469 5 жыл бұрын

The Led Will Burn After Few Hours

@lazyh-online4839 4 жыл бұрын

Only without a heatsink, and only depending upon it's rated power output

@-na-nomad6247 4 жыл бұрын

The led is not the issue, like lazy said, it just needs a heatsink, but the circuit itself will fail because of the caps used

@lazyh-online4839 4 жыл бұрын

@@-na-nomad6247 thanks for elaborating on the capacitor issue, maybe I should be less "lazy" in my explanation 🤣

@hexafineenterprises8114 5 жыл бұрын

This.circuit will not last because the components heat up due to high current.

@tinlanthierry6650 4 жыл бұрын

false ! you dont know capacitive power supply !

@beautifulworld1491 4 жыл бұрын

Components heats up in resistor based power supply nd not the capacitor one

@vartanavny2868 4 жыл бұрын

will this resistor hold the current without burning ?

@beautifulworld1491 4 жыл бұрын

Yes, it's 1 Mega ohms

@cookies-pb1eg9vg8v 2 жыл бұрын

Not working . Only 7 Volts is coming

@nileshw1368 5 жыл бұрын

No voltage regulation circuit ?

@lazyh-online4839 4 жыл бұрын

You don't want voltage regulation with led.

@alphinthomas5422 5 жыл бұрын

It's a good project. Thanking you for giving this idea.

@daiku6999 5 жыл бұрын

This design Capacitor ac current too high Require selected cap

@severomorsk-3487 4 жыл бұрын

Just so.

@georgeiskander2458 5 жыл бұрын

Don't try it!!!!!!!!!!! Please bring an avo and put it across the the output

@erneztudofia9053 4 жыл бұрын

What's avo? I need this project the right way please

@flowerpt 4 жыл бұрын

I see the comments below but I'm still going to try to work out why this circuit works to help understand EE. Sometimes simplified examples are the best.

@lazyh-online4839 4 жыл бұрын

Google transformerless power supply.

@edward.h3532 4 жыл бұрын

How to do the same with 100.w Led?

@luarcobal3127 4 жыл бұрын

this is the indian way to start a fire😂😂😂😂😂

@tinlanthierry6650 4 жыл бұрын

it is a capacitive power supply, and so wat ? there is the same in my coffee maker !!

@frederict3425 8 ай бұрын

@@tinlanthierry6650coffee machine has a constant resistance so capacitor can be calculated exactly. LED will thermally runaway and burn this crappy "design". Do you think that if that thkng would work, LED lamps manufacturers would bother to put a more complex design inside their light bulbs?

@-na-nomad6247 4 жыл бұрын

Goos concept but unstable, not effective and dangerous (cap failure)

@cletusspuckler2243 4 жыл бұрын

If the 1uf capacitor shorts, the electrolitic capacitor and leds will explode like fireworks on the 4th July. It would be better to insert a fuse between the mains plug and the circuit.

@mohdjimar87 4 жыл бұрын

Use zener diode or regulator for safety

@victorgamboa8198 4 жыл бұрын

Se puede usar un diodo zener de 12 voltios a la salida, para estabilizar el voltaje

@alexisporrasarias6067 4 жыл бұрын

Victor correcto, el voltage de salida es muy alto.

@souravbhattacharyya3392 2 жыл бұрын

Yes,or a 7812 with heat sink

@D_Electrician 2 жыл бұрын

very useful circuit

@edwardbartolo6382 5 жыл бұрын

Use a transformer to provide isolation and to increase energy efficiency.

@lazyh-online4839 4 жыл бұрын

Transformer wouldn't increase efficiency, it would decrease it.

@JodBronson 5 жыл бұрын

Can you give me info on how to make with 120V AC? Thank you !!!

@Perepodvyvert_s_perevorotom 5 жыл бұрын

Use cap 2ucF.

@JodBronson 5 жыл бұрын

@@Perepodvyvert_s_perevorotom - THANK YOU !!!

@Perepodvyvert_s_perevorotom 5 жыл бұрын

But 2ucF *ONLY* for the led shown in this video! If you want to connect another load - use the online calculator for transformer-free (transformerless) power supply.

@JodBronson 5 жыл бұрын

@@Perepodvyvert_s_perevorotom - Thank you !!! ❤️❤️❤️❤️❤️❤️❤️

@willydharmawan4469 5 жыл бұрын

No 1

@fransiistaken 5 жыл бұрын

please help me grow my channel

@willydharmawan4469 5 жыл бұрын

@@fransiistaken I support

@mdmuzaffaralam5900 4 жыл бұрын

Bahut achha hai sir

@andreslimonesaguilar3342 5 жыл бұрын

Nada mas un favor que se vean bien los valores de los elementos o circuitos que usas y gracias por compartir

@joseernestohernandezalvara3017 2 жыл бұрын

GRACIAS FUNCIONA MUY BIEN UN FUERTE ABRAZO

@ashrafali-zf8by 4 ай бұрын

Nice to see

@LFOVCF 4 жыл бұрын

Some of the nastiest soldering technique I've seen.

@aaronniehaus2224 4 жыл бұрын

Keep in mind this is how electronics were manufactured for a long time!

@justaguy9224 4 жыл бұрын

Aaron Niehaus This is true, but PCBs, breadboards and breakout boards have been here quite a while ago.

@AbhilashKsupernovaabhi 4 жыл бұрын

Same circuits are used in cheap Home LED bulbs

@endurofan9854 4 жыл бұрын

yes i agree i've dismantled one that we have, it was the bulb that has a battery inside witch allows it to lit up in case of black out... didnt last long 😞 so i tried to see whats inside and yes that circuit was the same...

@cookies-pb1eg9vg8v 2 жыл бұрын

Can I make this without diode rectifier ? So I can make voltage doubler and get double voltage in dc

@johann1311 2 жыл бұрын

the rectifier is the the thing that turn ac to dc you can’t remove it

@barichoudhury5591 5 жыл бұрын

Very good idea.Thanks

@joshmellon390 4 жыл бұрын

For the love of god, can anybody make something without being criticized? Just trying to read some of your comments gave me autism.. "If we eliminate all errors, we would also eliminate much discovery, art, insight, learning, and creativity that results from facing errors." -Kevin Everette FitzMaurice

@rubikdaenk2214 6 ай бұрын

sorry, I'm a beginner. I've tried this circuit but why is the 220uf 25 volt capacitor in just 3 seconds and it's very hot... and the DC output is electrocuted... is this circuit safe to use? Thank you in advance, best wishes for success, please guide me.

@fransiistaken 5 жыл бұрын

i was wondering if i be a good youtuber like u

@JodBronson 5 жыл бұрын

You can always try!

@fransiistaken 5 жыл бұрын

@@JodBronson I do so please put your help by chucking my channel and subscribe

@eknaap8800 5 жыл бұрын

No, not without using capitals and proper punctuation...

@danielarsivana5991 4 жыл бұрын

"easy way to burn your house"

@Yoad3D 4 жыл бұрын

yes,i try this and the 220uf cap explode

@gayan33gm 3 жыл бұрын

🤣🤣🤣

@warunakumara7671 2 жыл бұрын

please share the schematics , give a full detailed explanation about how it work

@newbeatlee 4 жыл бұрын

what a dangerous circuit , just any mistake and boom

@universodemascotas3340 4 жыл бұрын

Buen video ....una pregunta si el led fuera de 36 voltiis y 100 watts que tendria que cambiar de los componentes..gracias

@sidnewsound 5 жыл бұрын

Observação: neste circuito não ocorre o efeito de *isolamento* da rede elétrica como ocorre com o uso de transformadores.

@carlosmolina8835 5 жыл бұрын

Colombia presente.............

@GoharGraphics 5 жыл бұрын

This huge capacitor tried to kill me last week. I tried that circuit. Dangerous.. Not recommend to anybody

@Perepodvyvert_s_perevorotom 5 жыл бұрын

How do I see you died? Or are my eyes lying to me? Just keep your hands away from the circuit under voltage.

@sergiojuancha 5 жыл бұрын

It was trying only.

@GoharGraphics 5 жыл бұрын

@@Perepodvyvert_s_perevorotom yeah i didn't touched the circuit under voltage but when i plugged the circuit off i got shocked by touching the AC input plug cause of charged capacitor. By the way i am alright 😊

@GoharGraphics 5 жыл бұрын

@@sergiojuancha yeah that was nightmare too

@sergiojuancha 5 жыл бұрын

Sorry!

@hidayatkhan8696 5 жыл бұрын

Dear what is maximum current of this circuit and how many led can glow on this circuit?

@KjartanAndersen 4 жыл бұрын

It depends on the capacitance and frequency. From capacitance and frequency you calculate reactance. And Ohm's Law will then tell you the maximum power possible. 1 uF on a 220V 50 Hz mains system will give a reactance of 3183 ohm. And with 220V that limits the power to 69 mA.

@raynherrera9593 5 жыл бұрын

Dislike it. Claiming 12v without using multimeter!

@georgesamuel4787 4 жыл бұрын

surely 12v LEDburst ,use 12v zener diode across the capacitor

@gabrielaldana2678 4 жыл бұрын

Cómo puedo calcular el voltaje de Salida depende del capacitor cerámico o del condensador electrolítico.

@dooyumawav3330 3 жыл бұрын

What's the current that can carry this circuit?

@chusakphinitphadungtham3254 5 жыл бұрын

Oh my god ! It is very dangerous ckt. It is not isolate between HOT and Cool circuit .

@lazyh-online4839 4 жыл бұрын

Hot and cool? Do you know how electricity works?

@TechForid 5 жыл бұрын

Wow nice to video

@LuchoLavalle 5 ай бұрын

Please, for the love of god, don't do this at home. Especially with that plug that has no ground at all and it's extremely dangerous because you have no way to know the polarity when you are plugging it in and you could easily connect the phase with the hot one and short cirtuit the whole thing.

@jupiters_rider 5 жыл бұрын

*FULL BRIDGE RECTIFIER*

@laddi6615 5 жыл бұрын

सर क्या यह एलइडी फुल जल रहा है या फिर थोड़ा कम वीडियो में साफ पता नहीं चल रहा है

@fransiistaken 5 жыл бұрын

please help me grow my channel

@laddi6615 5 жыл бұрын

@@fransiistaken आई एम सॉरी आई लव इलेक्ट्रिकल वीडियो

@laddi6615 5 жыл бұрын

@@fransiistaken आप की वीडियो बच्चों के लिए

@beautifulworld1491 4 жыл бұрын

Kam kal raha hai Kyonki 1uF sirf 70 to 80 miliampere ka hi current de payega Jabki LED 5 Watt ka hai

@vasudevanarumugam1311 5 жыл бұрын

One question , this circuit is ,, how many volts ac or dc 12volts tell

@tinlanthierry6650 4 жыл бұрын

the output voltage depend of power of led and serial capacitor value

@fahimmuntasir7301 Жыл бұрын

Focus on 1:01 second of the video, you will notice the circuit was wrong, then they change the circuit secretly 😂😂😂

@WecleArit-wp4bo 7 ай бұрын

Sorry sir.. I'm a beginner learning to try as in the video.. but the result is that the Elco 50v 470 uf is hot.. Where's the problem, sir? Please guide me. Thank you in advance.

@jwilko7998 4 жыл бұрын

Madness, to dangerous for many hobbyists.

@redfox05nl 2 жыл бұрын

I don't see you add any solder, how is that? Does that soldering iron add it where I can't see it, or did you edit that out?

@edwardnihal248 4 жыл бұрын

How many amps?

@khelifinouredine1842 5 жыл бұрын

How many ampere please

@nileshw1368 5 жыл бұрын

P = VI V = 12 volt, P = 5 watt I = P ÷ V = 5 ÷ 12 = 0.416 ampere. However, the line input is A.C., and it is plainly rectified by a full bridge rectifier circuit. There's no voltage regulation circuit.

@khelifinouredine1842 5 жыл бұрын

@@nileshw1368 khink you my friend

@nileshw1368 5 жыл бұрын

@@khelifinouredine1842 @Khelifi Nouredine you are welcome, my dear friend. The above calculation is for the 5W LED. The source built in the video, however, provides an unregulated D.C. supply to the LED ; less than 0.1 ampere of load current, as it is based on the reactive property of the non-polarised capacitor ( 1uF ).

@nguyenphuoc6714 5 жыл бұрын

Thanks!

@TWINSTARSHIDO 5 жыл бұрын

Let me explain the circuit. The value of input capacitor will determine the output current. A 1uf capacitor will bring about 60mA current. This is not dangerous although the voltage current ranged 260v. Why the COB does not burned because the current is too small. It will take about 500mA to work optimally but also cause heat so bad.

@TWINSTARSHIDO 5 жыл бұрын

There's a mistake in the description. Not 12v but 260v. If you want to have a 12v you must add a 7812