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Binary resistive load device

A resistive load, binary technology, applied in the field of electrical engineering, can solve the problems of increasing the complexity of computer programs, and achieve the effects of intuitive and convenient hardware debugging, direct relationship and simple software programming

Inactive Publication Date: 2011-08-24
中国人民解放军第二炮兵计量站
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of the existing resistive load device is that it requires a computer to run a relatively complicated calculation formula, which also increases the complexity of the computer program.

Method used

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Embodiment 1

[0007] Embodiment 1: Referring to the accompanying drawings, a binary resistance load device includes: 0 ~S 15 Control access to N resistors R connected in parallel 0 ~R 15 , characterized by: one of the resistors R 0 The resistance is r 0 , other resistors R 1 ~R 15 The resistance values ​​are: r 0 / 2, r 0 / 2 2 ,...,r 0 / 2 N-1 .

Embodiment 2

[0008] Embodiment 2: Referring to the accompanying drawings, the binary resistance load device as described in Embodiment 1, wherein the resistor R with the largest resistance value 0 The resistance r 0 Equal to or slightly greater than the maximum input voltage / minimum current resolution, the resistor R with the smallest resistance 15 The resistance r 0 / 2 N-1 Equal to or slightly less than 2 times the minimum input voltage / maximum input current.

Embodiment 3

[0009] Embodiment 3: Referring to the accompanying drawings, as the binary resistance load device described in Embodiment 1, the described N is 16, and the described resistance R 0 The resistance r 0 is 4096Ω, other resistors R 1 ~R 15 The resistance values ​​are: 2048Ω, 1024Ω, ..., 0.125Ω.

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Abstract

The invention belongs to the field of electrical engineering, and particularly relates to a resistive load device. The binary resistive load device comprises N resistors [R0 to R15] which are switched on and off under the control of switching elements [S0 to S15] and connected in parallel, and is characterized in that: a resistance value of one resistor [R0] is r0, and the resistance values of the other resistors [R1 to R15] are r0 / 2, r0 / 2<2>, ..., r0 / 2<N-1> respectively. In the resistive load device, control codes of the parallel resistors adopt binary operations, namely, the resistor with the highest resistance value corresponds to the least significant bit of a binary digit with N bits, and by parity of reasoning, the resistor with the lowest resistance value corresponding to the most significant bit of the binary digit with the N bits; and the binary digit obtained by multiplying the r0 by current I to be set or input voltage U is the control code of the switched-on resistor. The resistive load device makes software programming extremely simple without decimal operations, and makes hardware debugging extremely intuitive and convenient due to direct relationships between the codes and hardware.

Description

technical field [0001] The invention belongs to the field of electrical engineering, in particular to a resistance load circuit. Background technique [0002] In occasions such as the verification of power supply load capacity, it is necessary to use a resistance load device with variable resistance to change the output current of the power supply to be verified. In an automatic verification system controlled by a computer, the resistance load device consists of multiple parallel resistors controlled by switching elements Composed by the computer according to the current value required to calculate and control certain resistors are connected in parallel. The disadvantage of the existing resistive load device is that it requires a computer to run relatively complex calculation formulas, which also increases the complexity of the computer program. Contents of the invention [0003] The object of the present invention is to provide a resistance load device which is very conv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H7/06
Inventor 庄建华孙尉
Owner 中国人民解放军第二炮兵计量站
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