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cooling the power supply circuity
To supply the power to the drill.
To provide power to the power supply which in turn powers the motherboard.
To power all the components of a computer.
There are several factors that control the rate at which a sample moves or migrates in a gel. One of those factors is electric power supply. The larger the voltage applied, the faster the migration. However, there is an upper limit to how much voltage can be applied. If the voltage is too high, it will cause heating in the electrophoresis module and this is turn will negatively affect the integrity of the gel.
A UPS is an abbreviation for an "Uninterruptible Power Supply". The purpose of this device is to provide power when the main power source fails. UPS battery backups are used to provide power for computers, data centers and various other types of equipment. Typically the back-up is used with equipment that cannot have a disruption in the power supply, or equipment which may be damaged if there is a disruption in the power supply.
because the termination and relays in side the telecoms penal needs for DC supply to continues the protection equipment and relay and purpose of telecoms
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theperpose of a power supply is to step up or step down an ac voltage to a desired dc value
To supply electricity in the event that the main power supply is unavailable and electricity is needed, or when it is impossible to connect everything that needs electricity to an outlet.
Need more information - a typical regulated power supply would include dozens of resistors, each for one of several different reasons. Which resistor are you asking about?
Simply to provide a backup supply should the main supply from the water company be cut off