How do you use Japanese light bulb 100V in Malaysia which is 240V?

only the iMac and the mac Pro

Answer for USA, Canada and countries running a 60 Hz supply service. If we assume that the resistance of the light is R then the amps drawn by the 100 Volt light is 100 divided by R; and the amps for the 240 volt light is 240 divided by R. Therefore, at 240 volts the light will draw 2.4 time the current it would draw at 100 volts and will likely burn out the bulb immediately. Correction: The answer above assumes the R of both lamps is the same. Most likely they are not. A 100W lamp designed for and supplied with 100V draws 1A with an R of 100ohms. A 100W lamp designed for and supplied with 240V draws 0.42A with an R of 571.43ohms. The Rs do not change. I assume the circuit has not changed so it is a 100V circuit. If you place the 100V across the 571.43ohms you get a current of 0.175A. The lamp designed for 240V, when placed on a 100V circuit, would not glow and would not burn out. Going the other way and placing 240V across the lamp designed for 100v you get a current of 2.4A. Since it is designed for only 1A it would most likely burn out. All this is very technical and to the questioner I apologize. The answer is: NO, YOU CANNOT REPLACE A 100V LIGHT BULB WITH A 240V LIGHT BULB. <><><> As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed. Before you do any work yourself, on electrical circuits, equipment or appliances, always use a test meter to ensure the circuit is, in fact, de-energized. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB SAFELY AND COMPETENTLY REFER THIS WORK TO QUALIFIED PROFESSIONALS.

i am quite sure these adapters have a "resister"of sorts (voltage regulator) in them which holds back any voltage above say 100v. So they are still runnig internaly at 100v even when plugged into 240v outlet

There will be no problems as the Mac laptops are designed to work internationally with a line voltage ranging from 100V to 240V.

PL mean Plug in - Light Bulb, the most comment application is CFL (Compact Fluorescent Lamp) which require assistance components to make it work or light up, different to incandescent light bulb, it can light up by just itself direct connect to our home electricity ac 100v to ac 240v.

PL is mean Plug in - Light Bulb, the most comment application is CFL (Compact Fluorescent Lamp) which require assistance components to make it work or light it up, different to incandescent light bulb, it can light up by just itself direct connect to our home electricity ac 100v to ac 240v.

as much as your mum eats grapes

There will be no problems as the Mac laptops are designed to work internationally with a line voltage ranging from 100V to 240V.

if i have a breaker that has a 120/240v and my dryer has a 240v plug can i change the receptacle to a 240v

More than likely, your 240V system has branches that supply a standard household 120V to things like lighting outlets. Most light bulbs in the US run on 120V so this is probably a convenience feature. Otherwise you would have to go to a specialty store and buy 240V bulbs.

Depends on the supply voltage, UK 240V would be 250w/240V = 1.041A or US 110V 250w/110V = 2.27A Power = Volts x Amps so you can check it backwards

The input voltage range for the Toshiba power supply is AC 100V - 240V. The output voltage is DC 19V / output current is 4.74A. This power supply comes with a power cord and packaging will state voltage recommended for the product.

not the case moron. its: 12V 800mA and the polarity is positive in the inside of the plug.

It will work it you use 240 volt light bulbs.

You can't run this light on a 120V circuit and get the same light output if it is designed to run on a 240V service. You need a voltage converter transformer. They are a common item sold for international travel. The difference in frequency shouldn't affect the light.

Yes, you need a transformer

its black and white or if its relay the color changes

240v is equal to how many amps

No fluorescent tubes need a ballast with power applied to both ends of the tube to make it light.

Generally 220v anything works easier or with less effort so can be cheaper to run. Appliances that run off 240V draw less current than 120V appliances so lighter wiring and fixtures can be used. However, 240V is more prone to arcing than 120V. Also, 240V is more likely to blow you away than 120V, whereas 120V is more likely to "grab" (Cause your muscles to involuntarily contract, i.e. making your hand grab a conductor) you. Also the US uses 120V because Edison originally used 100V. It was upped over the years to cope with demand. The US also has 240V in residential service for large appliances like ovens and dryers.

A typical laptop charger draws less than 1A at 240V, so a 1A fuse should be fine. The power draw for a charger will be written on the charger itself, of course; you'll see something like "Input: 100 - 240 VAC, 1.2 - 0.6A". In this case, the two numbers at the right go together, so at 100V the charger uses 1.2A, at 240V it uses 0.6A.

Can run 208v heater on 240v?

Do you mean a 220V as in a power in Europe? Then, Check your adaptor. It will tell you the input voltage. If it sates that the range of the input voltage in 100V-240V then YES you can plug in your adapter into a 220V outlet. Please note that some people advise that you plug in the adapter into the power before plugging it into the computer.

Yes. For more information see the answers to the Related questions shown below.

You will have to take the old 120 volt ballast out and replace it with a 240 volt ballast.