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Section 1 General Rules
Measurements of electrical quantities. Synchronization measurements
Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)
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1.6.19. For measurements with accurate (manual or semi-automatic) synchronization, the following devices should be provided: two voltmeters (or double voltmeter); two frequency counters (or double frequency counter); synchroscope.
 See other articles Section Rules for the installation of electrical installations (PUE).
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| Random news from the Archive Convert infrared light to image
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US researchers have unveiled a new device that allows you to see through smog or fog, as well as create a map of human blood vessels. It does not use hazardous substances.
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