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High voltage power supplies have many uses. It is most commonly used to supply power from a device to the circuit. These are great for people who need to supply their house with power.
The electrolytic capacitor is most often used in power supply circuits to filter the rectified AC.
No because they have different connectors.
variable dc supply are used to get desired amount of dc supply
The type of power supply being used (AC or DC) should match the power requirements of the device it will be supplying power to.
computer
Your battery.
it is used to supply power to motherboard and other peripherals
Yes. A Cat-5 line can be used to supply power to certain Ethernet Switches that support POE, or Power Over Ethernet.
The best power supply I've used is the Hurricane digital power supply, it has many features my favorite being that it remembers your last settings.
They supply power to the spacecraft during missions.
Answer for countries in Europe and other world areas running a 50 Hz supply service.AC power supply is 230 v supply used in our homes for switching on fans, bulbs etc. where as DC power supply is used for switching on our laptops, charging our mobiles phones, i pods etc.