BRIDGE-TYPE METER OF PASSIVE ONE-PORT PARAMETERS Russian patent published in 1998 - IPC

FIELD: measurement technology. SUBSTANCE: meter has pulse generator 1, electrical bridge and balance indicator 18. First arm of bridge is formed by capacitor 5 and object being measured which includes series-connected capacitor 6, resistor 7 and inductance coil 8 in parallel to which resistor 9 is connected. Common lead of capacitor 5 and of measured object form first output of bridge. Second arm of bridge is formed by series-connected circuit consisting of seven elements and resistor 10 of second arm. Seven-element circuit has resistor 11. Series-connected capacitor 12, inductance coil 13 and resistor 14 are connected in parallel to resistor 11. Series-connected resistors 16 and 17, the common lead of which serves as second output of bridge are connected in parallel to inductance coil 13. Balance indicator 18 is connected to first and second outputs of bridge. Novelty of meter is as follows. Resistors 14-17 are introduced additionally; generator of sequence of pulse signals of rectangular, linearly-varying, source and cubic forms is used as pulse generator 1; third input of balance indicator 18 is connected to third output of pulse generator 1, and fourth input of balance indicator is connected to common bus of device to which second terminal of diagonally opposite pair of bridge supply terminals is also connected. EFFECT: higher measurement results. 1 dwg