220v to 12v without transformer

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

[@TechIdeasAG]

Li-ion charger circuit using 1 transistor kzbin.info/www/bejne/eoDHm6t8hcl9aZo

[@kabildev1]

,.

[@arogaming8568]

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

[@dolohbaesa718]

ทำแบบนี้ได้พลังงานกี่ w ครับผม

[@matthewmatthew5123]

can it also be used on the contrary?

[@hirasaqib2816]

@@pankajgaming723 no

[@Blade0983]

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]

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

[@KelvinsurajRepairs]

@@leonelbarrientos995 xD

[@susantpal]

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?

[@f.k.burnham8491]

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.

[@snehalmahulkar2608]

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

[@alexissandoval8803]

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

[@jaystanjones8869]

Very useful nice circuit . Thanks for presenting.

[@tomasbarrantes7219]

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

[@mkxlrider5780]

Thanks for this tech idea bro👍

[@antoniussegala7658]

Mantap bossqu.. 🤝🏼 👍 Sukses selalu

[@oilbay54]

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

[@barichoudhury5591]

Very good idea.Thanks

[@fransiistaken]

nice video sir

[@misterextechnician8614]

You are so amazing creator

[@joseernestohernandezalvara3017]

GRACIAS FUNCIONA MUY BIEN UN FUERTE ABRAZO

[@ForidExperiment]

Wow nice to video

[@jimparsons6803]

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

[@morpheus6749]

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]

I wouldn't bet on it.

[@nguyenphuoc6714]

Thanks!

[@8BB76E1]

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..

[@patricioluisponcedeleon3012]

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

[@user-zk7pl2ht1g]

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

[@qweqwe-kd4yc]

good job. hello from Turkey.

[@TechIdeasAG]

Welcome bro

[@Elmacik1]

Merhaba 🙂

[@BeRight4u]

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

[@D_Electrician]

very useful circuit

[@mdmuzaffaralam5900]

Bahut achha hai sir

[@Harshavardhan-zr2ip]

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

[@alphinthomas5422]

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

[@edwardfoehring8827]

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

[@lazyh-online4839]

Not the brightest move there buddy.

[@phitrow]

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

[@mrsonic5663]

thanks for video

[@universodemascotas3340]

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

[@volkantas6456]

mükemmel yaptım oldu teşekkür ederim çok aramıştım

[@yavuzozdin6559]

Hala devre çalışıyor mu ?

[@marcosborges8]

excelente tus vídeos amigo!

[@Siberia55rus]

Третья рука креативная! Клево👍

[@igorturchinyuk151]

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

[@heyderaliyev8976]

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

[@ravinduvidarshana9624]

superb

[@lathasharan781]

good vedio bro

[@ashrafali-zf8by]

Nice to see

[@user-xy7hj2tm2i]

Рассаду отлично досвечивает.

[@tform1]

Конопли?

[@lekshmimusic3374]

Super

[@hansukumar1309]

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

[@niranjankumardey6318]

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

[@lazyh-online4839]

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

[@tubfragr2270]

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

[@lazyh-online4839]

@@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]

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

[@tubfragr2270]

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

[@akashduarah5971]

Great

[@seenanll4181]

Thanks a lot.

[@deepak_73]

mast bhai

[@andreslimonesaguilar3342]

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

[@akashduarah5971]

Nice

[@carlosmolina8835]

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

[@santecutatso5505]

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

[@AjayKumar-vr5gu]

Super thank u

[@electroniquepassion]

Nice Friend 👍

[@JuanLeonardoObregon]

Nuevo sub

[@anthonylebug8843]

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

[@besnw]

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

[@lazyh-online4839]

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.

[@santecutatso5505]

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...

[@jean4756]

Perfect ! 🃏😂👍👏👏👏

[@arvindmali4421]

Bhai Nice It Is Work

[@arvindmali4421]

Bhai Tumne Jo LED Lagayatha Same LDE Meine Lagaya But Wo 1 Hours Bad Udgaya.. To Uske Liye Kya Karna Padega. ?

[@user-pe3up1vg8s]

Отлично.Спасибо Вам.

[@jamesallen6007]

Manh thanks.

[@rolandoerazo5263]

Good, nice to greet you. Your video is very good. Friend could give me the idea of ​​how to make a spark to light gas conina. If you have a plan with its elements. I would appreciate it. regards

[@debutants]

merci

[@lassanasrilanka6139]

reyal

[@fransiistaken]

i was wondering if i be a good youtuber like u

[@JodBronson]

You can always try!

[@fransiistaken]

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

[@eknaap8800]

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

[@user-tq3pe8gi3k]

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.

[@genjitakya8466]

BOOM 🤗

[@cobra_iran5095]

Good

[@abdulmalekrajjoub8262]

نشرت فأحسنت النشر كل الإحترام و التقدير

[@AntonioCarlos-uc1mk]

Show parabéns

[@user-dp9tp6hj7r]

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

[@dipperpines6868]

А как же развязка по U?

[@die_hertz]

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

[@user-rd8vi8fc9x]

1 마이크로패럿 콘덴서 가 중요 하네요 변압기없이 한다는게 무게를줄이는것 좋치만 절연에는 치명적 입니다

[@grisha1130]

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

[@gabrielaldana2678]

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

[@vinaytechintelugu]

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

[@warunakumara7671]

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

[@rafaelcabelo6616]

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

[@raychan1123]

Rafael Cabelo true

[@user-qn9gx3qi5k]

Молодец!

[@mohdjimar87]

Use zener diode or regulator for safety

[@musabmohammed7973]

I now know how to make fire crackers with resistor 😂

[@user-bj1kc7zq5j]

Хороший канал

[@willydharmawan4469]

No 1

[@fransiistaken]

please help me grow my channel

[@willydharmawan4469]

@@fransiistaken I support

[@khaledadora]

what is Ampere Out ?

[@stevenharpervw]

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.

[@JodBronson]

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

[@Perepodvyvert_s_perevorotom]

Use cap 2ucF.

[@JodBronson]

@@Perepodvyvert_s_perevorotom - THANK YOU !!!

[@Perepodvyvert_s_perevorotom]

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]

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

[@rodrimelg663]

*Excelentes* mensajes ... Y con nutrición completa economica proporcionese todos los nutrientes que requieres y que la alimentación cotidiana no proporciona ... Sanando Regenerando. Dexintoxica Tendrás Salud Total o recuperala ... mejora tu contextura corporal _pregunteme Y ayudemos a todos estos canales personas ... causas_

[@hasanbozkurt7503]

Bu yaptığın proje 12v adaptör karanlıklarında sakinca varmı bir uyduyu çalıştırırsan uydu bozulur mu teşekurler

[@umaiyalcreation1923]

good job

[@aneesajabbar5142]

Sir transformer wali circuit banao led ki

[@budstran2121]

What is the component rate for variable 0-15v 5a ?

[@newbeatlee]

what a dangerous circuit , just any mistake and boom

[@sidnewsound]

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

[@Sonukasrawad]

15 watt LED bulb ke liye kaun sa PF use Karen

[@dooyumawav3330]

What's the current that can carry this circuit?

[@geniusnocopyrightmusic9368]

Mere pass 3 volt ka 12 leds hay series may laga huva hay. Muje 36 volt dc ke liye kithna value ka capacitor lagana padega

[@edward.h3532]

How to do the same with 100.w Led?

[@victorgamboa8198]

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

[@alexisporrasarias6067]

Victor correcto, el voltage de salida es muy alto.

[@souravbhattacharyya3392]

Yes,or a 7812 with heat sink

[@brirajbanssingh5120]

Boss transformer less ac to dc supply system ke liye kiteney Amperage ka hoga. Or agar 3amper la transformer less supply banaye. Amperage keyse bara saktey hain.please guide and advice.

[@omarramirez5764]

It needs a better regulación and that led deeds heatsink

[@redfox05nl]

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?

[@RajKumar-ci7dg]

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]

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]

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]

@@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]

@@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]

@@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.

[@jwilko7998]

Madness, to dangerous for many hobbyists.