Sample-and-hold circuit arrangement

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

1986-05-09

1987-06-09

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

328151, G11C 2702

Patent

active

046722394

ABSTRACT:
The invention relates to a sample-and-hold circuit arrangement comprising a differential amplifier (5) followed by an inverting amplifier (8). In accordance with the invention there is provided a third amplifier (12) and a capacitor (14) which connects an output of the third amplifier to its input. The inverting amplifier (8) ensures that the voltage on the output (16) of the arrangement is independent of the offset voltage of the differential amplifier (5). Moreover, the capacitor (14) maintains the voltage on the output (16) during a sampling interval 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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