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When you come home and your electronic clock is blinking, it can be a great inconvenience.
You may not realize, however, that your clock is probably reacting to a phenomenon known as the "momentary outage"—which actually helps prevent greater inconvenience.
Although momentary outages have always been a part of your power system's service, you may be more aware of them today because of modern appliances' sensitivity to even the slightest variation in power supply. Just a second's interruption is enough to make them blink.
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