220v to 12v without transformer
Вставка
- Опубліковано 26 сер 2024
- 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
Li-ion charger circuit using 1 transistor
ua-cam.com/video/DOdjxFPdJ38/v-deo.html
,.
Bhi es board sa kitna light ko jala paya ga???
ทำแบบนี้ได้พลังงานกี่ w ครับผม
can it also be used on the contrary?
@@pankajgaming723 no
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...
Looks like I have stumbled upon an ancient knowledge... gotta have more..
@@leonelbarrientos995 xD
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?
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.
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..
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
Wow amazing idea 12v power supply
Nice,
But please make a video
How ceramic capacitor convert
220v -12v mechanism clearly
You are not informing with positive and negetive. I do and blast it💥💥
Sir, very nice. Sir, what is the value of resistor 100 ohms ? Watt how much.
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
💡🔥⚡️🤡
I am sure he has NO IDEA what he is doing
@@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
@@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 !
Butcher with no idea...
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.
can i connect the 220v side to an air blower and the 12v side to motor battery
I now know how to make fire crackers with resistor 😂
Many young radio amateurs who will try to repeat this electric circuit will be killed!)))
How do you think is it that Resistor was reducing 220v AC down to 12v AC or something else...???
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
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
Liked it. An inexpensive, practical solution that could be used to power other low voltage projects too.
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.
I wouldn't bet on it.
Рассаду отлично досвечивает.
Конопли?
what is Ampere Out ?
And should use one 12 volt 1 watt zenner diod parallel.
Not with the led they shouldn't. Any other circuit I would agree but definitely not with the led.
@@lazyh-online4839 Why we do not need it with the LED? How the O/P voltage is 12V now?
@@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.
@@tubfragr2270 also, most leds like this have a 32v forward voltage, so a 12v zener wouldn't even be enough anyways.
@@lazyh-online4839 But what limits the current here then?
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.
Третья рука креативная! Клево👍
Por fin un video donde muestra paso a paso con las referencia y coneciones de los materiales felicitaciones...excelente
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
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.
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.
@@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 ,
@@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
@@souravbhattacharyya3392 ji thanks for reply voltage for ac supply is clear but how u calculated 105j for it ®arding 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.
Superb DIY
Comment after making and using this kind.
Best 👍
Very useful nice circuit . Thanks for presenting.
Ten zasilacz daje prąd około 120mA, czyli około 10 razy mniejszy niż prąd nominalny diody LED. Moc to 1W zamiast 10W.
Диоды моста в опасности - нужно ограничить пусковой ток при включении с разряженными емкостями, включив на входе последовательно резистор
А как же развязка по U?
Нашел такую схему в "вентиляторе от розетки", причём продавался в США под видом made in us. Видимо тоже китай
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...
How to do the same with 100.w Led?
I thought it was a dangerous circuit.
If the LED is disconnected or misconnected, it will destroy the electrolytic capacitor
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.
will this resistor hold the current without burning ?
Yes, it's 1 Mega ohms
Главное не Забывайте что это без трансформаторный бп и нету гальванической развязки ⚠️😊😉
Mantap bossqu.. 🤝🏼 👍 Sukses selalu
Buen video ....una pregunta si el led fuera de 36 voltiis y 100 watts que tendria que cambiar de los componentes..gracias
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.
Can I make this without diode rectifier ?
So I can make voltage doubler and get double voltage in dc
the rectifier is the the thing that turn ac to dc you can’t remove it
Focus on 1:01 second of the video, you will notice the circuit was wrong, then they change the circuit secretly 😂😂😂
No voltage regulation circuit ?
You don't want voltage regulation with led.
Thanks for this tech idea bro👍
What's the current that can carry this circuit?
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.
nice video sir
I tried arc welding with this circuit thank God for gloves and good face protection.
Not the brightest move there buddy.
Yes, I use this chem too, and it may be works many years.
It's a good project.
Thanking you for giving this idea.
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.
You are so amazing creator
How many amps?
Does we can touch 12v dc output
this is the indian way to start a fire😂😂😂😂😂
it is a capacitive power supply, and so wat ? there is the same in my coffee maker !!
@@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?
Not working . Only 7 Volts is coming
Bu yaptığın proje 12v adaptör karanlıklarında sakinca varmı bir uyduyu çalıştırırsan uydu bozulur mu teşekurler
Actually in that bridge rectifier you can use 25v 2200uf capacitor, it's best for that bridge rectifier.
Becarefull, this circuit does not step down the main 220V to 12V! It only holds the current.
Rafael Cabelo true
Se puede usar un diodo zener de 12 voltios a la salida, para estabilizar el voltaje
Victor correcto, el voltage de salida es muy alto.
Yes,or a 7812 with heat sink
Sir please tell me can I use this circuit and run my 12 volt DC motor ?????
GRACIAS FUNCIONA MUY BIEN UN FUERTE ABRAZO
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?
Nice to see
Very interesting thing, you are "capos" in electronic!!!!
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.
Manh thanks.
Cómo puedo calcular el voltaje de Salida depende del capacitor cerámico o del condensador electrolítico.
Amperage?
Can you give me info on how to make with 120V AC? Thank you !!!
Use cap 2ucF.
@@Perepodvyvert_s_perevorotom - THANK YOU !!!
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.
@@Perepodvyvert_s_perevorotom - Thank you !!! ❤️❤️❤️❤️❤️❤️❤️
Why i was getting 4.23 v output ?
And my i was getting reverse current from circuit means -from + and +from - terminal plz help 😢😢
@@kamranheidary173 yes bro
good job. hello from Turkey.
Welcome bro
Merhaba 🙂
Lo he hecho y todo bien pero no se que tiempo de vida le de al led
If 12Volt Zener diode is not used, there will be 220V dc voltage across the Led Lamp. Is not it? Pls watch me also..
what a dangerous circuit , just any mistake and boom
Is this circuit can glow DC 12 v 10 watt led?
Kya hum isko bike me laga sakte hai overvolt aa raha hai bike se
Sir please bolen aita diye ki 12 volt ar DC motor chalano jabe ???
Dear what is maximum current of this circuit and how many led can glow on this circuit?
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.
what must change if i want output 3,3Vdc ?
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
is se 12 dc fan chala sakte hian ?
Sir instead of 25v 220uf can we use 25v 2200uf ( 2amps) and was it risky without zener diode?
Nada mas un favor que se vean bien los valores de los elementos o circuitos que usas y gracias por compartir
How many ampere please
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.
@@nileshw1368 khink you my friend
@@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 ).
Why to be used that capacitor before full bridge rectifier?if that reason is for limited curent?,why not only to be used by resistor without capacitor?
Kya hum isse 12v battery charge kar sakte hai
*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_
One question , this circuit is ,, how many volts ac or dc 12volts tell
the output voltage depend of power of led and serial capacitor value
Can I run dc 12v moter with this circuit
Bhai kya HM 400 v cbb21tk 335j use kr sakte hain
Colombia presente.............
How is that not generating 220v dc
thanks for video
please share the schematics , give a full detailed explanation about how it work
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.
1m resistance how much wate ?
Sir capctr heat ho ja raha supply dete he
Can we used this to trigger 12v relay..
very useful circuit
Why do you use a series capacitor?
the capacitor is used to chut down the voltage, it replace a transformer
@@tinlanthierry6650 why do you use only a resistor suitable for decreased voltage and curent,
Very good idea.Thanks
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.
Google transformerless power supply.
Blb gaana wedi karaganna w gaana wedi karanna kohomada