Temperature compensation of a resistance bridge circuit

Details Temperature compensation of a resistance bridge circuit Temperature compensation of a resistance bridge circuit

1982-03-09

1984-12-25

Krass, Errol A.

Boots, shoes, and leggings

73721, 73727, 73766, 7386263, 338 3, 364482, 364558, G01K 1900, G01R 2700, G01L 122

Patent

active

044908032

ABSTRACT:
A resistance bridge circuit is temperature compensated, for both zero error and sensitivity, over a predetermined temperature range by connecting a first compensating resistance in series with one resistor of the bridge, and a second compensating resistance in parallel with the same or an adjacent resistor of the bridge, to reduce zero error, the positions and values of the first and second resistances being determined from measurements, at a plurality of temperature levels, of the voltage levels and resistance values of the bridge, and on the arrangement of proposed external connections to the bridge. Third and fourth compensating resistances are connected in series and parallel respectively with the bridge as a whole, the values of the third and fourth resistances being dependent on measurements as aforesaid and on the proposed external connections. The four compensating resistances are the only compensating elements required to provide a predetermined zero error and sensitivity.

REFERENCES:
patent: 3034346 (1962-05-01), Starr
patent: 4172389 (1979-10-01), Branch
patent: 4174639 (1979-11-01), Raven
patent: 4192005 (1980-03-01), Kurtz
patent: 4333349 (1982-06-01), Mallon et al.
"A Temperature Compensated Silicon Strain Transducer" by _P. F. Castle, published in `Strain`, Jan. 1974, pp. 22-25.

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