Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1996-08-07
1998-12-08
Ballato, Josie
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
327113, 327184, G01R 31308
Patent
active
058475702
ABSTRACT:
A trigger circuit is composed of a frequency multiplying portion which receives an electric signal to be measured and multiplies its repetitive frequency so as to output a multiple signal, a comparing portion which receives this multiple signal and outputs a square wave signal corresponding to its value, and a dividing portion which divides the square wave signal so as to output a trigger signal. Accordingly, even when a noise component is superposed on the electric signal to be measured, a trigger signal having little jitter and a repetitive frequency lower than that of the electric signal to be measured is output. Also, the electric field measuring apparatus in accordance with the present invention comprises this trigger circuit and measures, with a highly accurate timing, the electric field of the object to be measured.
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Nakamura Takuya
Takahashi Hironori
Ballato Josie
Hamamatsu Photonics K. K.
Kobert Russell M.
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