RU2013101829A - BRIDGE METER OF PARAMETERS OF N-ELEMENT TWO-POLE - Google Patents

Abstract

A bridge meter of n-element two-terminal parameters, containing a pulse generator, which consists of pulse shapers with voltage changes over their duration according to the law Kt, Kt, Kt, Kt, ..., Kt, where K, K, K, K, ..., K are constant coefficients, t is time, n is the number of elements in the two-terminal network of the measurement object, from the switch, power amplifier and synchronization unit, the output of each driver is connected to the corresponding input of the switch, and the output of the switch is connected to the input of the power amplifier, the output of which forms the first output of the gene Rathore relative to "earth", the clock input of each pulse shaper connected to the output synchronization unit, and its output forms a second output on the "land" of the pulse generator (sync output), the common bus of the pulse generator is grounded; the first output of the pulse generator is connected to the input of the four-arm bridge circuit, which forms the common output of two parallel connected branches of the bridge, the first branch of the bridge circuit is formed by two series-connected multi-element bipolar, their common output forms the first output of the bridge output, the free output of the second multi-element bipolar is grounded, the first multi-element a two-terminal device consists of a series-connected first capacitor and a first resistor, a second capacitor is connected to their common output, p therefore which is connected to the second resistor, the second branch of the bridge comprises a single resistor connected in series relationship a shoulder, and two terminals for connecting the two-terminal - measuring objects, the total output of a single resistor and the first terminal for n

Claims (1)

A bridge meter of parameters of n-element two-terminal circuits, containing a pulse generator, which consists of pulse shapers with voltage changes over their duration according to the law K ₀ t ⁰ , K ₁ t ¹ , K ₂ t ² , K ₃ t ³ , ..., K _{n -1} t ^n-1 , where K ₀ , K ₁ , K ₂ , K ₃ , ..., K _n-1 are constant coefficients, t is time, n is the number of elements in the two-terminal network of the measurement object, from the switch, power amplifier and unit synchronization, the output of each driver is connected to the corresponding input of the switch, and the output of the switch is connected to the input of the power amplifier, the output of which о forms the first output of the generator relative to the ground, the synchronization input of each pulse shaper is connected to the output of the synchronization unit, and its output forms the second output relative to the ground of the pulse generator (synchronization output), the common bus of the pulse generator is grounded; the first output of the pulse generator is connected to the input of the four-arm bridge circuit, which forms the common output of two parallel connected branches of the bridge, the first branch of the bridge circuit is formed by two series-connected multi-element bipolar, their common output forms the first output of the bridge output, the free output of the second multi-element bipolar is grounded, the first multi-element a two-terminal device consists of a series-connected first capacitor and a first resistor, a second capacitor is connected to their common output, p therefore, with which the second resistor is connected, the second branch of the bridge includes a single relationship shoulder resistor and two terminals for connecting two-terminal measuring objects, the common output of a single resistor and the first terminal for connecting measurement objects forms the second output terminal of the bridge circuit, the second terminal is grounded , the common output of a single resistor and a first capacitor of the first multi-element bipolar of the first branch of the bridge forms the input of the bridge circuit relative to the "ground"; a null indicator, to the first input of which (differential input) both outputs of the bridge circuit output are connected, its second input (synchronization input) is connected to the second output of the pulse generator, the common bus of the null indicator is grounded, characterized in that the inclusion of elements in the first multi-element is changed bipolar of the first branch of the bridge, the extension circuit is highlighted, the number of extension circuits and their connection is determined, the free conclusions of the first and second resistors of the first multi-element bipolar of the first branch of the bridge are connected enes with the first bridge circuit output terminal, each of the two strands of the first capacitor and the first resistor and the second capacitor and the second resistor represents CR circuit capacity, the total amount of these additional circuits is equal to $$\left[\frac{n}{2}-2\right]$$

with an even number of elements n in the two-terminal network of the measurement object, starting from the third extension circuit, in this case the last CR circuit is complete, with an odd number of elements n the number of additional extension circuits is $$\left[\frac{n+\mathrm{one}}{2}-2\right]$$

, also starting from the third extension circuit, in this case the last extension circuit is incomplete, contains only one capacitor that is connected in parallel with the penultimate extension circuit resistor, each subsequent CR extension circuit is connected in parallel with the resistor of the previous extension circuit, both multi-element two-terminal devices in the first branch of the bridge are the same in the number of elements in them, in the nature of these elements and in their connection with each other, the number of elements in each of the two multi-element two -pole in the first bridge branch is equal to the number n of elements in the two-terminal network measurement object, the number of pulse generators in the pulse generator is also equal to the number n of elements in the two-terminal network measurement object.