Integratable bipolar level detector for high-frequency sinusoida

Details Integratable bipolar level detector for high-frequency sinusoida Integratable bipolar level detector for high-frequency sinusoida

1989-11-15

1992-08-18

Heyman, John S.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307264, 307246, 307494, H03K 5153, H03K 1756, H03K 522, H03L 500

Patent

active

051401851

ABSTRACT:
The level detector comprises a first capacitance having a charge circuit including a first transistor controlled by the input signal to be detected (Vi) and a discharge circuit. A second capacitance has a charge circuit including a second transistor controlled by the input signal and a discharge circuit having at least one third transistor having pre-set electrical and geometrical characteristics. The above discharge circuits are connected to the respective inputs of a comparator whose output is representative of the difference between the maximum amplitude of the input signal and a reference level depending on said electrical and geometrical characteristics of said third transistor.

REFERENCES:
patent: 4801827 (1989-01-01), Metz

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