Method for performing a sample and hold function

Details Method for performing a sample and hold function Method for performing a sample and hold function

1980-07-01

1982-11-30

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307228, 307510, 328151, G11C 2702

Patent

active

043617697

ABSTRACT:
A method of using a sample and hold circuit to obtain a substantially ripple free voltage on the holding capacitor is provided by holding the charge capacitor at a constant voltage during the sampling time and by not routinely charging the charge capacitor to the maximum potential available. This provides a virtually constant voltage from which the holding capacitor can be charged. The level to which the charging capacitor is charged is controlled by an error signal. This error signal is reflected onto the holding capacitor, and is used as an output for the sample and hold circuit.

REFERENCES:
patent: 3586880 (1971-06-01), Fitzwater, Jr.
patent: 4121273 (1978-10-01), Jarrett et al.
patent: 4151473 (1979-04-01), Coleman et al.
patent: 4166248 (1979-08-01), Bianchi et al.

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