2010-02-11 16:11
Q: Whats about momentary power losses? How many milliseconds can PSU feed PC components, when a momentary power loss on the power grid occurs?
For example: electrical engineers are switching 110 kV lines somewhere in a city and for just a moment there are no electrical power on the power line. 10 kV and 400 V lines are also effected. Power disappears just for a tiny part of a second, but it is usually enough to restart the computer. Even using UPS this problem can't be avoided properly, because when a momentary power loss is detected, UPS triggers and switches him self to battery power. Almost immediately it switches back to main power, because there are no power loss left. This behavior leaves PSU whit out electrical power.
Usually, this kind of problem is compensated by PSU internal capacitors energy. But how it is efficient or even possible using DC to DC converters?
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