Process for filtering an electrical signal by charge transfer in

Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock

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307221D, 357 24, H03K 3353, G11C 1928, H01L 2978

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active

043038395

ABSTRACT:
The process more particularly comprises introducing beneath the final storage capacitor C.sub.6 a quantity of charges equal to that located there during the processing of the preceding sample of the input signal, prior to the beginning of charge transfer from said capacitors to the means which convert the charges into a voltage, and distributing the charges between said capacitor and the preceding capacitor as a function of the capacitance values. The switched capacitor filter more particularly comprises, when it is looped, a circuit R permitting the application to the looping capacitor C.sub.4 of a voltage V.sub.g +.DELTA.V.sub.s, while the foils of the other storage capacitors of the filter are connected to the voltage V.sub.g.

REFERENCES:
patent: 4070667 (1978-01-01), Eichelberger
patent: 4072939 (1978-02-01), Heller et al.
Caves et al., "Sampled Analog Filtering Using Switched Capacitors as Resistor Equivalents", IEEE J. Solid-State Circuits, vol. SC-12 (12/77) pp. 592-599.
Mok et al., "A Charge-Transfer-Device Logic Cell", Solid-State Electronics, vol. 17 (10/74) pp. 1147-1154.

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