Binary coded decimal resistive load and network
First Claim
Patent Images
1. An apparatus configured to provide a variable resistance, comprising:
- a plurality of resistive elements, each resistive element having a respective resistance; and
a plurality of switches, each of the switches coupled to a respective one of the plurality of resistive elements, each of the switches configured to selectively include the respective one of the resistive elements in said variable resistance;
wherein the resistive elements and the switches are arranged in a binary-coded decimal scheme, wherein the plurality of resistors are arranged in a plurality of resistor groups, wherein each resistor group comprises four resistors having respective resistances of about 1×
10X, about 2×
10X, about 4×
10X, and about 8×
10X, where X is an integer.
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Abstract
An embodiment of an apparatus for providing a variable resistance may be configured to provide a resistance value according to a binary-coded decimal scheme. The apparatus may be referred to herein as a BCD variable resistance apparatus. The BCD variable resistance apparatus may include a plurality of resistive elements and a plurality of switches. In an embodiment, the resistive elements may be coupled with respective switches in a binary-coded decimal scheme.
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Citations
18 Claims
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1. An apparatus configured to provide a variable resistance, comprising:
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a plurality of resistive elements, each resistive element having a respective resistance; and a plurality of switches, each of the switches coupled to a respective one of the plurality of resistive elements, each of the switches configured to selectively include the respective one of the resistive elements in said variable resistance; wherein the resistive elements and the switches are arranged in a binary-coded decimal scheme, wherein the plurality of resistors are arranged in a plurality of resistor groups, wherein each resistor group comprises four resistors having respective resistances of about 1×
10X, about 2×
10X, about 4×
10X, and about 8×
10X, where X is an integer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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providing an apparatus comprising; a plurality of resistive elements, each resistive element having a respective resistance; and a plurality of switches, each of the switches coupled to a respective one of the plurality of resistive elements, each of the switches configured selectively include the respective one of the resistive elements in the variable resistance; wherein the resistive elements and the switches are arranged in a binary-coded decimal scheme, wherein the plurality of resistors are arranged in a plurality of resistor groups, wherein each resistor group comprises four resistors having respective resistances of about 1×
10X, about 2×
10X, about 4×
10X, and about 8×
10X, where X is an integer; andautomatically actuating the switches to provide a predetermined sequence of resistances. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An apparatus configured to provide a variable resistance, comprising:
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a plurality of switched resistive elements, each resistive element having a respective resistance, the resistive elements grouped to provide a variable resistance according to a binary-coded decimal value, wherein the plurality of resistors are arranged in a plurality of resistor groups, wherein each resistor group comprises four resistors having respective resistances of about 1×
10X, about 2×
10X, about 4×
10X, and about 8×
10X, where X is an integer;wherein the resistive elements are configured for automatic switching to selectively contribute to the variable resistance. - View Dependent Claims (16, 17, 18)
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Specification