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Allelectronics, especiallythose using semiconductors, use d.c..
The fundamental component inthe processors and RAM is the Transistor - a junction of two "semiconductor" materials that can pass a current across the boundary in one direction only, and then only when a bias voltage is applied to the junction, so that it acts as a relay.
This unidirectional flow explains whythe supply to the circuits must be d.c.; while the on'off switching nature of a transistormeans data can be processed as aseries of on/off, 1/0 pulses - the 'bits' themselves.
The processor and memory chips in fact hold vast numbers of microscopic transistors and other components in arrays etched into plates ofsemiconductor materials.
When laptops are connected to mains power the AC is converted to DC for the reasons above. To have laptops run on battery when not connected to mains power is therefore easy.
What else can I help you with?
How can you on laptop wihtout using battery?
we can use a dc voltage directly from a dc source with parameters equal that of the battery
Do laptop work on ac or DC and how?
A laptop runs on DC. Either from the battery, or the external power supply, which converts AC power to DC.
What appliance has DC voltage?
A laptop computer requires DC.
What does a DC to DC converter do?
A DC to DC converter is a power converter that converts a current from one voltage unit to another. Popular uses of a DC to DC converter are cellular phones and laptop computers.
Can you charge your 19V 3A laptop using a car battery and a 3.9ohm 35W resistor?
No, because a car battery only has a 12 volt DC output.
Where can one purchase a DC converter for a laptop?
There are a large variety of different places where one can purchase a DC converter for a laptop. These places include, but are not limited to, stores like Amazon and Ebay.
In MIG welding what are the polarities of the torch and the work-piece and what is the fundamental reason for this?
MIG welding works only with reversed polarity, DC+, + at the torch. The reason is mostly the stability of the arc. Using DC- will result in a very unstable arc with lots of spatter.
What laptop component converts DC to AC?
rectifier. not unique to laptops.
What is reason behind using dc emf in compare to ac emf?
The main reason for using ac is safety. ac as more safe than the dc as it passes through zero in every half cycle. There are many other reasons like, ac can be transmitted for longer distances efficiently we can use the Induction motor.
Is it bad to put a laptop on top of another laptop?
Yes. The reason is while your laptop using the HD, if there is any movement there is are are chances of hard disk failure
What are cooler pads used for?
Cooler pads are used for cooling laptops. If one's laptop overheats too often and shuts down for no reason, one can try using a cooler pad and placing it under the laptop to reduce the heat generation caused by laptop.
Is using of generator to charge laptop cause problems to the system?
No it doesnot causes any problem. If you have noted on your laptop's charger, the input voltage is AC while the output is DC. so whatever goes in, it always give out the clean direct current suitable for laptop. My friend Chaudhry siraj always uses laptop on generator and have no issue till now. :-)
