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- desktop microcomputers require AC power
- laptop and handheld (e.g. cellphones, GPS navigators, PDAs) microcomputers use rechargeable battery DC power and only require AC power during recharge
- a few microcomputers use disposable battery DC power and never use any AC power
- the microcomputers in unmanned satellites usually use solar cell DC power, there is no AC power where they are
- the microcomputers in manned spacecraft usually use fuel cell DC power, but depending on the computer this may be provided either directly as DC or through a power inverteras AC; these fuel cells also provide drinking water as a byproduct
- etc.
What else can I help you with?
What are the differences between ac servomotor and dc servomotors?
AC servomotors require an alternating current as a power source, meaning they need to be plugged into an outlet, while DC servomotors require a direct current as a power source, meaning they can be run off of battery power.
Battery ac or DC?
Batteries can provide both AC (alternating current) or DC (direct current) power, depending on the type of device they are connected to. However, most batteries themselves supply DC power. Devices that require AC power typically use an inverter to convert the battery's DC power into AC power.
Why do we use capacitors on fan blower motors?
Some AC motors are designed to start running as soon as electricity is provided. Other AC motors are designed for a specific purpose and do not start on AC current. They will RUN on AC, but require a DC current to start. Here's where the capacitor comes in. It stores DC power that, when released, starts the motor turning. At this point, AC current will nicely run the motor.
Why do we use capacitor on fan motor or blowers?
Some AC motors are designed to start running as soon as electricity is provided. Other AC motors are designed for a specific purpose and do not start on AC current. They will RUN on AC, but require a DC current to start. Here's where the capacitor comes in. It stores DC power that, when released, starts the motor turning. At this point, AC current will nicely run the motor.
Why does an AC wattmeter require polarity marking?
To ensure that the relative directions of the current passing through the current and voltage coils result in the meter reading 'upscale'.
How can you change a 130v ac motor into a 110v ac?
To do it properly would require rewinding the motor with thicker wires in order to deal with the higher current caused by the higher voltage.
Can DC current be used in homes?
Yes but for what purpose. Virtually all hpme appliances and electronic devices require ac.
Does a fan run on a dc current or ac current?
AC
How can you block ac current?
You can block AC current by using a filter with a pass-band that is outside the frequency of the AC current.
What device converts dc current to ac current?
A "Rectifier" converts AC current to pulsating DC current.
What type of electrical current does a computer need to function?
All computers, and electronic devices for that matter, require a direct current (DC). Any electricity coming from a wall socket is what's called AC or an alternating current because it oscillates back and forth very rapidly. Computers require a very constant and steady stream of electricity and so it must convert the power from an outlet from AC to DC before it can be used. That's why there are capacitors on the motherboard to steady and even out power while changing it from AC to DC.
Did ceiling fan operate on dc or ac current?
ac current
