Sample-and-hold device and method for the operation of a...

Details Sample-and-hold device and method for the operation of a... Sample-and-hold device and method for the operation of a...

2005-09-13

2005-09-13

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

Reexamination Certificate

active

06943593

ABSTRACT:
In the case of a sample-and-hold device a holding condenser is fed with an input voltage via a controllable sampling switch. To improve the transient characteristic of the sampling switch this is fed with an adjusting signal of a controller, which regulates the conductance of a mirror switch with essentially identical features as the sampling switch to an ideal value, whereby the mirror switch is exposed to the same operating conditions as the sampling switch. In order to reduce distortions of the sample-and-hold device, a voltage step-up condenser can be looped into the activating path, which feeds the adjusting signal to the control inputs of the sampling switch or the mirror switch, before which was previously loaded with an auxiliary voltage.

REFERENCES:
patent: 6021056 (2000-02-01), Forbes et al.
patent: 6052000 (2000-04-01), Nagaraj
patent: 6642751 (2003-11-01), Quinn

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