computer fan on 220v?

Hi can i connect computer fan to 220v? if i can what else parts i need to use?

Question by tealk 6 years ago  |  last reply 6 years ago

220v to 12v transformer Answered

Hi I have two questions. In the drawing below, which diodes do i need to use and will this be compatible with a hand crank generator? Thank you for any help!

Question by GhengisKhan1981 1 year ago  |  last reply 1 year ago

Foreign 220V appliance in the USA?

Hi...I am moving back to USA from South Korea. I want to bring my LG fridge model # R-T693TH 220V and would like to know if it will work in the US if I install a 220V electrical system in the house. Or would I require a step down  220V to 110v thnx for your replies.

Question by zephyr900 8 years ago  |  last reply 8 years ago

How to stop a 220V LED , flashing in "OFF" mode ?

I bought a new 220V 50Hz night lamp. It works nicely, execpt that in few places in my house,  when the switch is in OFF mode, the LED is FLASING (!!!) at a rate of every 6 to 10 seconds How can I stop this flashing ? In fact, I can not leave the lamp connected to power. I must plug off the cable from the power when I do not need the light. Please help Regards. Hava.

Question by hava123 6 years ago  |  last reply 3 years ago

Simple plug-in 220V to 110V converter

My garage has either electric heat or none at all and my heaters blow the circuit breakers every time I try turning anything else on. HOWEVER I have a 220 circuit originally for a welder that I imagine would handle them easily. So, does anybody have a way to make a simple, plug-in adapter from a 220 circuit I seldom use to be able to plug in 110 heaters? (all the circuits are in the US)

Topic by wrymind 7 years ago  |  last reply 7 years ago

Can I convert an appliance that runs off of 220v to run off of 110v? Answered

I am going to move from Germany back to the states soon and I would like to avoid selling some of my larger and more preferred electronics.  I know I can buy a step up converter but I don't want to have a giant black box sitting in my living room for the next five years.  Electronics is not really my thing but I can learn and figure out what I need to.  I just need to know if it is possible to permanently convert 220v to run off of 110v.

Question by JohannBloch 8 years ago  |  last reply 8 years ago

Homemade Transformer?

Hi, Moved over to the UK from the US a couple of months ago and my fiancee has brought with her a 110V tea-steeper with her.  Apparently it possesses magical properties that cannot be reproduced by other local appliances.   It will blow out the fuse in a 500-watt transformer, which is the largest that I have.  My question is, why are these things so expensive?  I have very limited knowledge about them, but from what I do know they don't seem that complex.  Some of the higher wattage transformers are the same price as a netbook computer!  What is in them that costs so much? Also, can you make your own?   Thanks -Andrew

Topic by knightop 9 years ago  |  last reply 9 years ago

220v 3 wire to 220v 2 wire (USA to Philippines)

Hello all,  I'd like to purchase a welding machine in the USA and take it to the Philippines. My problem and hopefully solution is, USA use 2 legs of 110v for 220v appliances/machines. In the Philippines, voltage is 220v (single leg). So, If I have a single phase, 220v welder, can I cut the plug off, combine the two power legs and connect to the power in the Philippines? I hope I am able to articulate this question properly. Mig welders are not easily available over there. Thank you for anyone that can help

Question by TerryH74 2 years ago  |  last reply 2 years ago

wiring for a 220v hot tub?

We have a hot tub that is a 220v. We are not sure how to wire?

Question by 9 years ago  |  last reply 8 years ago

Leds To Ac Main 220v ?

Hello i want to build leds that work with ac main 220v i am fond of the leds . i want to glow up one led  with few components with full brightness ? sorry for my english . thanks in advance ?

Topic by malik8801 4 years ago  |  last reply 4 years ago

LED bulb with AC 220v. Answered

Can any body help me???? I want to build a LED bulb with 220v AC. But the circuit should be very simple and short. I want to fix it in a dead Energy Saver (CFL). or can i use dead CFL's circuit with LEDS?

Question by raza896 9 years ago  |  last reply 5 years ago

12V DC to 220V AC

I have an emergency lamp with backup battery power. its lamps have gone out. i want to use it to power a router, medai converter and a mobile charger. i have uploaded the specification of my power supply and things i want to run. please give me a detail way of doing this project and the materials i need, like inverter and other things My lamp gives 12V DC supply. i want to convert it to 220V AC and run those components. how can i run it and how long can i run thanks

Topic by energyworks 4 years ago  |  last reply 4 years ago

Hi convert 12v signal to 220v? Answered

Hello! I have a 12v signal and want to convert it to 220v, simply open the passage as a switch (progressive) and I have a 220V source, it would be like a relay but progressive.The signal is not always 12v it could be posible? Thanks! 

Question by labalavermella 7 years ago  |  last reply 6 years ago

Is anything a "must save" off a junked electric stove? Answered

Replacing my old coiltop electric range (might be repairable, but I'd rather put the money into something I'll like better).  The old one's just going to be hauled away. A friend has requested the oven racks, and the new range comes with its own power cord, so the 220V cord is of dubious value and likely to just take up space... is there anything else that might actually be worth the effort of removing? (I suppose I could save the control panel and see if I can get its relays set up to control something else, but that requires figuring out what voltage it actually requires and I'm not sure it's worth the effort. Especially since the controls are what failed. Probably just a stuck relay, but...)

Question by orksecurity 8 years ago  |  last reply 8 years ago

How can I build a 220V welder using 220V microwave oven transformers? Answered

I read TimAnderson's Instructable on building a homemade welder from microwave oven transformers, but that instructable is for a 110V setup, what should I change to make it work using 220V transformers on 220V. (I already gathered all the materials...) ....Link to TimAnderson's homemade welder?

Question by inserbot 9 years ago  |  last reply 9 years ago

220V AC Voltage regulator, controlled with micro controller?

Hi I'm fairly new to Arduino (I'm actually using Netduino), and I have been puzzling with making a voltage regulator, for a 100W lightbulb. But my issue is, that I would like to control it digitally, with a micro controller - and not with the usual potentiometer. Is there some kind of digital potentiometer I could use, or create? Or better yet, instructables on doing something similar to this? I've been looking, but all seems to be manually operated, and most of them are for low voltage DC. I'm pretty new to electronics as well, and I definitely would prefer, to NOT burn down the house. Any advice, comments and links are much appreciated :)

Question by goehler_dk 4 years ago  |  last reply 4 years ago

I am looking for a 220v/50Hz to 110v/60hz step down transformer - any help please? Answered

I want to purchase a computerized sewing machine for my wife from the US, however this machine is VERY sensitive, and manufacturer does not recommend running it on different voltage than 110v. I have checked with them, and the required input for it is:2.4  wattage. The amp is .02 and the voltage 120. I have not managed to find a reasonably priced step down transformer which can also transform the frequency - only one, but it costs a few thousands of dollars :)Please, help! This machine is not sold here, not in Europe, not even similar model. One answer I've got from a company specializing in such reliable converters: Since your sewing machine is computerized and very sensitive we do not feel confident that it will work properly with a voltage converter because of the cycle or hertz difference.  Here it is 60 hz and Israel it is 50hz and converters do not change the cycles. your sewing machine may be adversely effected. The machine I am talking about is this: Thanks!

Question by Carmageddon 6 years ago  |  last reply 6 months ago

220V 1000times a second transistor/relay?

I need a transistor/relay that can operate under 220V and can open and close itself a 1000 times a second. Does such a thing exist?

Question by yonch 6 years ago  |  last reply 6 years ago

Supply a computer monitor with 220V DC? Answered

Hello, i am unable to find answers to this anywhere so I hope you can help me! Is it possible to supply a "normal" computer monitor with 220V DC instead of AC? All the specifications list the input only as AC, but I would think the monitor have an internal power supply which converts 220V AC to 6-48V DC which uses a diode bridge and my basic electric knowledge tells me this bridge will work if supplied with DC as well. Would this work? Does actual "220V DC monitors" exist? I cant seem to find any..

Question by jclausen1 3 years ago  |  last reply 3 years ago

220v led bulb array delay

I made a makeup mirror with 15 holes for lights, now iwouldlike to have a slight ON delay from one to the other. I was thinking maybe a capacitor after each bulb or just a relay? ( figured the relay kind of has a 0.1 second delay)

Question by turbiny 11 months ago  |  last reply 11 months ago

Infared sauna electrical failure - help? Answered

Hello I purchased this sauna used a couple days ago, and its not turning on.. The previous owner sold it as having only an issue with the fuse, but I have exchanged all fuses, and Im assuming its one of the three components that are running in the rectangular unit mounted on top of the sauna. I will post all the photos so you are able to see detailed views of everything - I have now ordered a replacement for the power supply (s-35-12) as I cant imagine the transformer would short the entire sauna.  internal fuses are all 3 amp, this is the power supply (but the power running from mains is standard 13amp): And from what I can tell there is a sort of voltage regulator on that PSU which has a phillips white screw which is used for adjusting.  My guess is that previous owner set it for wrong output and it blew the PSU? Alternatively there is the main board, but I wouldnt know what to look for, nor how to replace, as it had no particular model number. I tested current coming from mains to the main board (sorry I dont have technical name for that) and electricity is definitely arriving there, but not sure where (or if) it goes after.  I tried to swap one of the kettle lead fuses for the one on the PSU board, and then power on, but as soon as I tripped the power to on it blew the fuse.. image 1 and 2 are overview, image 3 is writing on PSU, image 4 is transformer, image 5 is main board and image 6 is PSU (which I have ordered replacement for). Thank you for your help!

Question by NigelD19 2 years ago  |  last reply 2 years ago

12V DC to 220V AC supply

Hello I have a emergency light with battery back up. its lights have gone out so i want to use its 12V dc power to transfer to ac power to backup a media converter, wifi router and mobile charger. Please, i want a detailed process of building this system. how much time could i get backup? i need a instrument and parts list for this project. i have uploaded the pictures of my light and specifications along with it. thanks

Topic by energyworks 4 years ago  |  last reply 4 years ago

Is it possible to use a 220v to 6v transformer for converting 6v to 220v DC to charge 250v capacitors?

Is it possible to use a 220v to 6v transformer for converting 6v to 220v DC to charge 250v capacitors? If yes, then can anyone give me a schematic for the circuit to = convert 6v DC to 220v DC, charge 250v capacitors ( @220v ), capacitor overcharge protection with something like resistor, capacitor full charging LED indicator, capacitor full charge LED indicator, SCR (Silicon-controlled rectifier) based capacitor discharge (use power for magnetic coil) circuit.

Question by manpatpro 6 years ago  |  last reply 6 years ago

can i convert 220v dc to 9v dc.....such that 9v is the power supply of 555 timer.....

No other  supply is given only 220v dc is given....current can 50mA

Question by aruntheaspire 4 years ago  |  last reply 4 years ago

Can you operate 220v sub woofer to 12v CD player and amplifier?

Question by jorjer 7 years ago  |  last reply 7 years ago

can you plug a 230-240v 50hz juicer into a 220v 60hz?

Question by lanie ramos 5 years ago  |  last reply 5 years ago

120V MOT transformer on 220V for spot welding machine? Answered

Hello i'm making a Spot welding Machine using a microwave transformer i'm removing the secondery coil to replace with 2 rounds of very thick wire for the output . the only problem is the transformer rated for 120V input Will it matter if i connect the primary to 220v ? i'm replacing the secondery anyway ?

Question by pixema 5 years ago  |  last reply 3 years ago

220v ac to 12v dc power supply

Can you add 474j 50v and 474j 50v capacitors to become 100v? Or is there any alternative for 474j 250v?? Courtesy to the youtuber

Question by Starkn 1 year ago

what is the turn ratio for a 220v to 36v transformer? Answered

I've a transformer core like a MOT(tall but slim) and i want to make a power supply for my zvs driver with it. so what should be the number of turns on the primary and the secondary if the input voltage is 220V AC and the required output is 36 v (min 10A). also what should be the gauge of the wires to be used for winding.

Question by jasshopper 5 years ago  |  last reply 4 years ago

DC motor

I had a 220v angle grinder. It was burnt. I take the rotor of the grinder out. Its completely fine. Now i make a DC motor using this rotor and magnets(for field current). My question is, how much maximum DC volts this motor can take to get the maximum RPM. Because the motor was 220v AC, Will it run on 220v DC?

Question by Shezi007 11 months ago  |  last reply 11 months ago

Can I convert a 220v day night switch to 12 v?

I've got a light sensor switch that requires a 220v input Is it possible to concert it to work on a solar system? Sensor-Photodiode Switch-E.M. Relay Supply- 198-264 V.A.C Typical load- 2X250W H.P.S Maximum capacity-5A/60uF On/off levels- 70/105 LUX (1:1.5+VE) Part number- F3131D

Question by fjchorn 7 years ago

How can I make a cheap degaussing coil for a tv (220v). ?

How can I make a cheap degaussing coil for a tv (220v). I've tried a soldering gun and other small transformers but didnt work (big crt tv). I even build a coil with 10 meters of 10AWG (2.5mm) wire in a 12' diameter on 220v which only generated a shortcut (I build this just guessing the amount of wire and awg, so no mystery why I failed). I've read that a coil made out of #24 awg wire and over 1000 loops would do the trick (for 220v and over 500 loops if a used a 220V-110V transformer), but that is too much $ in copper wire. Maybe I could refurbish wire from a old electronic appliance, but not sure which might be it. Any suggestions? Thanks for your time

Question by inserbot 9 years ago  |  last reply 6 years ago

How can i make a a 220v day night switch work of 12v?

I've got a 220v light sensor switch that i want to mount on a solar light, Sensor- Photodiode Switch- E.M. Relay Supply-198-264 V.A.C Typical load- 5A/60uF On/Off Levels-70/105 LUX (1:1.5+VE) Part number-F3131D Is it possible to convert it to work on a 12v system?

Question by fjchorn 7 years ago

Is it possible, to supply power to dc motor using a rectified step down 220v to 110v transformer?

Hello experts, I need your help please. I have an old Dremel hobby drill. It was rated for 110v but accidentally plugged to 220v mains and blew-up its built-in rectifier and varible speed control. The motor still works. I tried it with 12v dc power supply but it rotates very slowly. If it is possible at all, how can I power it using a rectified step down 220v to 110v transformer. Thanks.?

Question by felixdjac 8 years ago  |  last reply 8 years ago

220V AC 16 LED ultra bright chaser?

I would like to add LED chaser to this schematic with time delay 400 nanosecond use ne555 and IC 4017. Thanks for the help datasheet for LED ultra bright : 3.5V, 25mA (maks), 12000 mcd?

Question by ylinggarjati 5 years ago  |  last reply 5 years ago

STEP DOWN TRANSFORMER 220v/50hz to 110v/60hz

I have some cordless power tools by Craftsman. Goes without saying they are 110v/60hz. Problem is I live in Australia where we have 220v/50hz. I need to purchase a step down transformer for the battery chargers. Could someone please tell me what spec step down I should get. i.e what output it should have. The biggest battery is 19.2v. Thanks for any advice

Question by Punzi 7 years ago  |  last reply 6 years ago

how to put 2/4/6 LED to 220V circuit without using the transformer ?

As i want to inset 4 LEDs inside a tube where there is no sufficient place to keep transformer.I want a circuit which can replace the use of transformer,that may be using resistor ,capacitor or so on.

Question by vinom55 10 years ago  |  last reply 7 years ago

can i use a 110v inverter connected to a 2000w travel converter to get 220v and power a 220v fridge Answered

I might need to do this when there is an electric outage, can we connect an SLA to inverter (110v) to a converter people use when they travel to 220 v countries?

Question by celalboz 9 years ago  |  last reply 9 years ago

I wanna frequency converter transformer ?

Hi Everyone I wanna to know where can i get frequency converter transformer that it's input is 2 wire (220v-50hz) and it's output is 3 wire where the voltage between any wire and com. is 110v and between the two wires is 220v

Question by MohamedE7 4 years ago  |  last reply 4 years ago

Making a user color selection AC powered 220-240v LED lighting. Answered

I want to light my room's ceiling edge with led lights which can change colors using a switch. I am not so good with electronics, except for basic stuff!! SO would like a nice and elaborated guide to build this. Thanks.

Question by CeramicPlate 7 years ago  |  last reply 7 years ago

Can an induction heater for domestic use (2000W) of 220V/60Hz be used efficiently with 230V/50Hz power supply?

I purchased one Induction heater (2KW) in Korea where the supply voltage is 220V/50Hz. I want to use this in India where the supply voltage is 230V/50Hz. Can this be used? 

Question by Eappen 6 years ago  |  last reply 6 years ago

Are audio speakers can be used either 220v ac or 12v dc?

Question by jorjer 7 years ago  |  last reply 7 years ago

how to build an inverter

I want to know how to build an inverter upto 5kva

Topic by segge 4 years ago  |  last reply 4 years ago


I was wondering if I can covert a transformer that is 220v to 110 and change it to a step up? It would be for a 500w motor. Thanks

Topic by senorkevin 6 years ago  |  last reply 6 years ago


The circuit diagram for your 250w to 5000w PWM DC/AC 220V Power Invertor is not very legible.Can you e-mail me a better copy?

Topic by AkhbarB 2 years ago  |  last reply 2 years ago

how to build an air conditioner into a wall?

27"x28" in size 220v unit, I want to put in wall instead of window

Question by wwille 10 years ago