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A device for the conversion of an electrical magnitude into an electrical signal whose frequency is representative of said parameter, and sensor using the principle of the said device.
A device for the conversion of an electrical magnitude into an electrical signal whose frequency is representative of said parameter, and sensor using the principle of the said device.
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机译：一种用于将电幅度转换为频率代表所述参数的电信号的装置，以及使用所述装置原理的传感器。
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摘要
In the device according to the invention, the charges paths are obtained by means of two calibration circuits are powered from the same current source (v0), one of these circuits comprising a capacitor (c3) connected to the source (v0) by means of a switch (s' 3) and to the input of the integrator (i) by means of a switch (s ′ 1) and the calibration circuit comprises a capacitor (c4), of the same capacity as the first, connected to the source (v0) by means of an inverter amplifier (in) in series with a switch (s ′ 4) and to the input of the integrator (i) by means of a switch (s ′ 2), the control of switches (s ′ 1, s' 2) being provided by at least a monostable circuit (4), activated by a detection circuit (2, 3) of the output voltage level of the integrator (i). br / the invention makes it possible to eliminate the variations of the scale factor, which are produced according to the current to be measured is positive or negative.
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