Which PSU consumes less?

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Nullman2015-04-04 17:57:02

Batteries

Nullman, 2015-04-04 17:57:02

There are two power supplies. The first one has input 100-240v 100ma, the second input 230v 70ma. As I understand it, the first consumption at about 110 volts will be 10 watts, at 220 there will be 5 watts? And the second one has 16 watts. It turns out that the first one will consume less at 220 V?

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3 answer(s)

A

Alexander, 2015-04-04
@NeiroNx

The power supply does not consume. He transforms. The maximum parameters are indicated on the power supply. The power supply is characterized by efficiency and therefore will consume even when not loaded. Connect the device to the power supply and then measure what and how much it consumes.

M

microphone, 2015-04-04
@microphone

Keywords for expanding knowledge:
Standard 80 PLUS Generalized Internal Power Supply Efficiency Test Protocol

P

Puma Thailand, 2015-04-04
@opium

How did you calculate the power?
Did you study at school?
power has always been the product of current and voltage
, and how did you get 5 watts from 240 volts and 100ma?