CN203396931U - Three-terminal analog resistance circuit used for simulating high-resistance standard resistor - Google Patents

Abstract

The utility model relates to a three-terminal analog resistance circuit used for simulating a high-resistance standard resistor. The three-terminal analog resistance circuit comprises a voltage division circuit, an analog resistance circuit and a feedback regulating circuit. The three-terminal analog resistance circuit improves the precision for simulating the ultrahigh standard resistor. In addition, the structure is simple, and the manufacturing cost is low.

Description

A kind of for simulating three end simulative resistance circuits of high value measuring resistance

Technical field

The utility model relates to a kind of technology of artifical resistance, especially can accurately simulate high resistance measurement.

Background technology

At present, making high value measuring resistance in the field of business is also a difficult problem, the known the highest Zhi Daoyitai of material standard resistance Europe resistance.Range when using Resistance Measurement Method high value measuring equipment more than ，Dui Yitai Europe is felt simply helpless.

Therefore for addressing this problem, these those skilled in the art utilize voltage-standard micro-current source method to simulate the superelevation measuring resistance from a gigohm nurse to a bat ohm, although the method can solve the deficiency that prior art exists, but there is variation in micro-current output terminal of its output, cause the micro-electric current out of true conversing, and then cause the resistance out of true of simulation, but to be suitable for the needs of high-precision requirement, have much room for improvement.

Summary of the invention

The utility model, for the deficiencies in the prior art, provides a kind of circuit simple, degree of accuracy high for simulating three end simulative resistance circuits of high value measuring resistance.

Key problem in technology of the present utility model is: utilize voltage-standard micro-current source method to simulate the superelevation measuring resistance from a gigohm nurse to a bat ohm, and by feedback regulating circuit, accurately control the output size of micro-electric current.Its concrete technical scheme is: a kind of for simulating three end simulative resistance circuits of high value measuring resistance, it is characterized in that comprising bleeder circuit, simulative resistance circuit and feedback regulating circuit, described bleeder circuit is comprised of voltage input end, voltage divider and signal ground end, described voltage input end connects voltage divider input end, and voltage divider output terminal connects signal ground end;

Described simulative resistance circuit is comprised of the first impact damper, totalizer, electric resistance array, described the first impact damper input end connects voltage divider adjustable side, the first buffer output end connects totalizer input end, adder output contact resistance array input end, electric resistance array output terminal connects current output terminal;

Described feedback regulating circuit comprises the second impact damper, described the second impact damper input end contact resistance array output end, and the second buffer output end connects totalizer input end.

The beneficial effects of the utility model: circuit of the present utility model has improved the precision of simulation superelevation measuring resistance, and simple in structure, and cost of manufacture is lower.

Accompanying drawing explanation

Fig. 1 is the utility model circuit diagram.

Embodiment

A kind of for simulating three end simulative resistance circuits of high value measuring resistance, it is characterized in that comprising bleeder circuit 001, simulative resistance circuit 002 and feedback regulating circuit 003, described bleeder circuit 001 is comprised of voltage input end 011, voltage divider 012 and signal ground end 013, described voltage input end 011 connects voltage divider 012 input end, and voltage divider 012 output terminal connects signal ground end 013;

Described simulative resistance circuit 002 is comprised of the first impact damper 021, totalizer 022, electric resistance array 023, described the first impact damper 021 input end connects voltage divider 012 adjustable side, the first impact damper 021 output terminal connects totalizer 022 input end, totalizer 022 output terminal contact resistance array 023 input end, electric resistance array 023 output terminal connects current output terminal 004;

Described feedback regulating circuit 003 comprises the second impact damper 031, described the second impact damper 031 input end contact resistance array 023 output terminal, and the second impact damper 031 output terminal connects totalizer 022 input end.

Claims (1)

1. one kind for simulating three end simulative resistance circuits of high value measuring resistance, it is characterized in that comprising bleeder circuit, simulative resistance circuit and feedback regulating circuit, described bleeder circuit is comprised of voltage input end, voltage divider and signal ground end, described voltage input end connects voltage divider input end, and voltage divider output terminal connects signal ground end;

Described simulative resistance circuit is comprised of the first impact damper, totalizer, electric resistance array, described the first impact damper input end connects voltage divider adjustable side, the first buffer output end connects totalizer input end, adder output contact resistance array input end, electric resistance array output terminal connects current output terminal;

Described feedback regulating circuit comprises the second impact damper, described the second impact damper input end contact resistance array output end, and the second buffer output end connects totalizer input end.

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