Document Type and Number:
Japanese Patent JPS5412828
Kind Code:
B2
Abstract:
By including four resistors and a capacitor in a bridge and connecting the bridge to the input terminals and the output terminals of a comparator amplifier a relaxation oscillator is obtained the square-wave frequency of which depends logarithmically upon the ratio of two resistances. Linearization is obtained by using a measuring-value transducer the resistance of which depends exponentially upon a physical quantity, such as temperature, as one of the resistors. The converter may be used in frequency-analog transmission of measuring values and in measuring instruments for measuring-value indication without the need for linearizing steps.
Application Number:
JP2229573A
Publication Date:
May 25, 1979
Filing Date:
February 26, 1973
Export Citation:
International Classes:
G01R17/16; G01K7/24; G01R27/02; H03B5/26; H03K3/0231; H03B5/04