Standby Current Advantages And Disadvantages

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This is the current electronic equipment draws when it is off but has some standby power supplying the sense circuits such as the PS On power in a computer power supply, or remote control circuit in an electronic equipment. The standby current maintains the PS On or the Power On that allows the use of soft power that allows computers to be power on from the soft switch or from the keyboard. It also allows one to power on electronic equipment such as a Television set using remote control. The modern power supplies do not have mechanical switches; instead they are turned on by a signal from the motherboard. The signal from the motherboard tells the power supply what to do, it for example instructs the supply to turn on and provide all output voltages. And by using software control, the operating system can instruct the motherboard to change the signal so that it turns off the supply after…show more content…
Disadvantages of standby current • Equipment consumes power from the mains, hence added costs to the consumer • More electricity is generated to take care of the standby power. This increases the capital and running costs for the power producing companies, - a cost that will be passed to consumers. The standby current enables some parts of the circuit to be active even when the equipment is in the idle state unless there is a mechanical switch. Even a small power supply such as a phone charger consumes some power when connected to mains but without the phone or with the phone fully charged. Power supplies with good designs have very little standby current, however, it is not possible to have a zero current and there is always a small current drawn from the mains. The standby use is currently growing and most of the new electronics equipment with standby options continues to increase despite drives to cut down on these modes. The reduction can be supported by both improved technology and increased consumer

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