Ємнісний негасенсор мостового типу

Abstract

A capacitive negasensor of bridge type comprises capacitor, capacitor of primary measuring transformer, two resistors, measuring block, at that the third and the fourth resistors are included, operational amplifier, two input terminals, second capacitor first output terminal of which is connected to the first output terminal of the second resistor, second output terminal of measuring block, second output terminal of the vessel of primary measuring transformer and noninverting input of operational amplifier. The second output terminal of the second capacitor is connected to the output terminal of operational amplifier and the second output terminal of the third resistor first output terminal of which is connected to inverting input of operational amplifier and through the fourth resistor to the first output terminal of the capacitor of the primary measuring amplifier, its first output terminal if connected to the common bus, first input terminal and first output terminal of the first capacitor, its second output terminal is connected to the first output terminal of measuring block and the first output terminal of the first resistor. The second output terminal of the first resistor is connected to the second output terminal of the second resistor and the second input terminal.