The smectic liquid crystal material switches between two states upon application of a dc pulse of appropriate amplitude, polarity, and time.
Liquid crystal material in the display is switched by a d.c. pulse of appropriate polarity, amplitude and time.
The switching device (8B) is turned on and off by a signal pulse supplied from a pulse generator (5) and supplies a D.C. current pulse to the primary side of the transformer (12).
A bistable electromagnet is brought from one working position to the other by a short direct current pulse, each pulse having a current flowing in the opposite direction from the previous one.
A method and apparatus for ionizing a rare gas in a gas type lighting source using a high voltage direct current pulse.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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