Sample-and-hold circuit arrangement

Details Sample-and-hold circuit arrangement Sample-and-hold circuit arrangement

1987-05-22

1988-08-16

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

328151, G11C 2702

Patent

active

047646896

ABSTRACT:
A sample-and-hold circuit arrangement comprising a differential amplifier (5) followed by an inverting amplifier (8). A third amplifier (12) is provided having a capacitor (14) which connects an output of the third amplifier to its input. The inverting amplifier ensures that the voltage on the output (16) of the arrangement is independent of the offset voltage of the differential amplifier (5). Moreover, during a sampling interval the capacitor (14) maintains the voltage on the output (16) at the value which it had in the directly preceding hold interval.

REFERENCES:
patent: 3516002 (1970-06-01), Hillis
patent: 4119960 (1978-10-01), Hill
patent: 4209717 (1980-06-01), Mahony
patent: 4546324 (1985-10-01), Bingham et al.

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