Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1986-05-05
1989-02-21
Pellinen, A. D.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 77A, G01R 2700
Patent
active
048068454
ABSTRACT:
In measuring and reproducing electric noise applied to an electronic component, the electric noise is envelope-detected and the envelope-detected noise is analog-digitally converted at high speed and stored. With this arrangement, electric noise, complicated and low in reproducibility, is accurately measured and stored. Further, a result obtained by performing a predetermined calculation on the stored value is digital-analog converted at high speed, reproducing the envelope-detected waveform as an analog signal, and a carrier signal having a center frequency of the electric noise is amplitude-modulated by the analog signal. As a consequence, imitation noise determined quantitatively can be accurately and repeatedly generated. Furthermore, when a repeated frequency of the electric noise is counted and stored, the basic frequency components of the electric noise can be measured without use of additional measuring instruments.
REFERENCES:
patent: 4553086 (1985-11-01), Watanabe et al.
Nakano Jiro
Ogawa Takashi
Fuller Leon K.
Pellinen A. D.
Toyota Jidosha & Kabushiki Kaisha
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