ARRANGEMENT FOR MEASURING TEMPERATURE DIFFERENCE Russian patent published in 2005 - IPC

FIELD: measuring technique.

SUBSTANCE: the arrangement has two thermistors switched on into the arm of the electric bridge; an amplifier, a follow-up peak detector, a storage capacitor, a controlled frequency generator, a standardization unit of an amplitude and duration of impulses, a converter of the frequency into voltage connected one after another. Inputs of the amplifier are switched on to the measuring diagonal of the bridge. At that the output of the converter of the frequency into voltage is connected with an isolated control electrode of the thermistor. The output of the standardization unit of an amplitude and duration of impulses is switched on to the feeding diagonal of the bridge. And the output of the generator of the controlled frequency is connected through the delaying block with the input of the control of the follow-up peak detector and connected with the output of the arrangement.

EFFECT: allows to increase accuracy of measuring by way of introduction into the scheme of degenerative feedback on controlled resistor of the measuring bridge.

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