0
100 ma is equal to .1 amp. It is the capacity or the maximum amount of current that can be drawn from the adapter that is established by the manufacturer of the adapter. If more that the nameplate rating is drawn from the adapter it will start to heat up and if this overload is left on for a extended period of time the adapter will be destroyed because of the heat build up. The insulation on the windings breaks down under heat and eventually will short out making the adapter useless.
Wiki User
∙ 13y ago
John Todd
Add your answer:
Earn +20 pts
Can a 12V ac bulb be used with 12V dc adapter or 12v DC supply?
Answer 1: No. Answer 2: This depends. The chances are that an AC adaptor can be substituted by a DC adaptor. It depends on what item it is powering. Not many items run directly on AC power. Most items that is shipped with an AC adaptor has got its own internal rectifier in order to make DC from AC. If you know enough about electricity and electronics to open up and check the item you need to power up, then check if it contain an internal rectifier. If it does, then it should be no problem. Some times however, the diodes used for rectifying the voltage are tightly dimensioned. 4 diodes is needed to rectify the power. 4 diodes of 500ma give you a usable current of about 1 Ampere if run with an AC power-source. If using a DC power-source however, the usable current is halved because only 2 of the 4 diodes will be used. Some items that use an AC adaptor is some clock-radios or answer-machines with time-telling. For these items it is likely that they will run fine on an DC adaptor except for the clock. In Europe, the AC is 50 Hz. In US, this frequency's is 60 Hz. This frequency is highly accurate and can be used to measure time for a clock. If using DC, then the clock will not function, but the rest should. Another issue is voltage... 12 v AC... when rectified and not stabilized, it will make about 16.8 volt. When powering some item, the voltage will drop, but always stay above 12 volt. Probably more like 14 volt. This depending on current drawn. If using a 12 v DC power-source, this will after diodes only give about 11.3 volt. It may still be enough for most appliances though. If not sure about what I am writing about, then you should find a perfect match AC adaptor to your "thing" and not even test a DC adaptor on it. IF the question was reverted. "Can I substitute a DC adaptor with an AC adaptor" then in 99.9% of cases this is a big NO. If putting AC where you should put DC, this will most likely lead to destruction of your item. You will "shortcut" capacitors and transistors. It may also cause fire.
Is ac DC dead?
ac dc is a band and not a person to die
Does ac dc mean it can run on battery or plug into wall?
AC - Alternating Current, same thing that comes out of a wall socket DC - Direct Current, batteries. <<>> When a device has AC/DC on its name plate, it can work off either of the two voltages. Many portable radios have this function. When the radio is plugged into AC, the voltage is transformed to the working DC voltage and then rectified to a DC voltage. When the radio is on battery operation, the radio operated strictly from the DC voltage supplied by the batteries. The change between voltages from AC to DC or DC to AC is almost instantaneously. This change over is done through an AC powered relay in the radio. When the AC held in relay looses its supply it de energizes and switches over to DC power if the batteries are in the radio. With batteries in the radio try it. Plug into the AC supply, turn on the radio that has batteries installed in it, unplug the AC supply and the radio will not miss a beat.
Can a charger be used in place of an AC adaptor?
In some instances a charger can be used in place of an AC adaptor. The one thing to keep in mind is that the output of a charger is not filtered as other power supplies are. The output of a charger will have a high degree of DC ripple voltage.
What component converts AC into clean DC power?
By using rectification we can convert the AC into DC....
Can you use an AC adaptor - 3v dc 800 ma to replace AC adaptor - 9 v DC 250 ma?
no, must be 3v
Can a 9 volt 100mA ac adapter be substituted for a 9 volt DC 300mA adapter?
No. an AC adapter will not work for equipment that needs DC.
Have a Universal ac dc adaptor and want to use it on a devise that says DC 10 Volt What do you choose on the adaptor it has 7 9 or 12?
Use the 9 volt setting.
What is the name of the Device to convert ac to dc current?
Tim ThomasBorn: April 15 , 1984Birthplace: Davison MichiganBest Known As: GodHeight: 5-11Weight: 201 pounds
Can a DC 9v 100MA device use 9v 650MA adaptor?
sure, no problem! The power supplying device is rated as to its MAXIMUM current delivering capacity, so 100ma being less than 650ma, you could run up to 6 of those devices in parallel with that adapter. You should not try to run a 650ma device with a 100ma supply though.
Can a 12V ac bulb be used with 12V dc adapter or 12v DC supply?
Answer 1: No. Answer 2: This depends. The chances are that an AC adaptor can be substituted by a DC adaptor. It depends on what item it is powering. Not many items run directly on AC power. Most items that is shipped with an AC adaptor has got its own internal rectifier in order to make DC from AC. If you know enough about electricity and electronics to open up and check the item you need to power up, then check if it contain an internal rectifier. If it does, then it should be no problem. Some times however, the diodes used for rectifying the voltage are tightly dimensioned. 4 diodes is needed to rectify the power. 4 diodes of 500ma give you a usable current of about 1 Ampere if run with an AC power-source. If using a DC power-source however, the usable current is halved because only 2 of the 4 diodes will be used. Some items that use an AC adaptor is some clock-radios or answer-machines with time-telling. For these items it is likely that they will run fine on an DC adaptor except for the clock. In Europe, the AC is 50 Hz. In US, this frequency's is 60 Hz. This frequency is highly accurate and can be used to measure time for a clock. If using DC, then the clock will not function, but the rest should. Another issue is voltage... 12 v AC... when rectified and not stabilized, it will make about 16.8 volt. When powering some item, the voltage will drop, but always stay above 12 volt. Probably more like 14 volt. This depending on current drawn. If using a 12 v DC power-source, this will after diodes only give about 11.3 volt. It may still be enough for most appliances though. If not sure about what I am writing about, then you should find a perfect match AC adaptor to your "thing" and not even test a DC adaptor on it. IF the question was reverted. "Can I substitute a DC adaptor with an AC adaptor" then in 99.9% of cases this is a big NO. If putting AC where you should put DC, this will most likely lead to destruction of your item. You will "shortcut" capacitors and transistors. It may also cause fire.
How do you install an ac power source into a digital camcorder?
Digital camcorders either work on battery or on AC power adaptor supplied with the camcorder. The DC output connector of the AC adaptor will connect to DC power input socket on the camcorder body. The location of this socket will depend on the make and model of the camcorder. Some times this socket is covered by a rubber cap which needs to be pulled out before you connect the power. - Neeraj Sharma
Why will your DC espresso not work with AC adaptor?
is this an espresso maker for a car? if so its a pretty large heating element and will need 12v at about 30A it doesnt matter if its dc or ac to power the heater the ac espresso makers are around 1000w and will make more faster heating appliances need lots of power and dont care about ac or dc its easier to get one in the correct voltage
What is ac adaptor?
Also called a power supply, plugs in to a standard wall outlet to provide 12 volt DC or 24 volt AC power for cameras and other low voltage devices
Ac to dc adaptor as car battery charger?
Not such a hot idea. Car batteries can draw a lot of current, far more than the average AC/DC adapter would be able to deliver. If the adapter survives that it hasn't got the circuitry to know when to stop charging, which can damage the battery.
Can I use 12V DC output universal ACDC adaptor with equipment that uses AC adapter 12VAC 2A?
There are many electronics today that run on 12 volt DC power. The good news for anyone who is traveling is that you can use a 12 volt AC adapter 12 VAC 2A.
What instruments do AC to dc current use?
I would assume that you mean what devices do you use to convert ac current to dc current?The answer is Diodes.seediode-bridge
