Analog delay circuit

Communications: electrical – Digital comparator systems

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179 1555T, G11C 1300

Patent

active

040357830

ABSTRACT:
Solid state digital circuitry is used in an apparatus which receives standard, continuously variable 4 to 20 milliampere analog signal information, continuously stores this information in a digital format and, after a preselected time interval measured in minutes, reproduces this information in its original smooth analog form with a fidelity of .+-. 1/2%.

REFERENCES:
patent: 3816664 (1974-06-01), Koch
Analog-Digital Conversion Handbook by Engineering Staff of Analog Devices, Inc., Norwood, Mass., June 1972, pp. 1-84 thru 1-90.

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