Voltage and current alternative sampling circuit
A voltage, current and circuit technology, applied in the field of voltage and current alternating mining circuit, can solve problems such as low precision, large resistance dispersion, and large power consumption of metering chips
Inactive Publication Date: 2016-02-10
成都华立达信息技术有限公司
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Problems solved by technology
[0002] The existing AC sampling circuit adopts the method of AC voltage directly passing through the resistance divider, and then enters the metering chip. In this method, the discreteness of the resistance is large, the precision is not high, and the metering chip is in the hot ground, and it is under high voltage during debugging, which affects the The operation is safe, and the metering chip consumes a lot of power; so there is an urgent need for a voltage and current alternating mining circuit to solve the above problems
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[0009] In order to make the purpose, technical solutions, and advantages of the application more clear, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0010] In the following description, references to "one embodiment," "an embodiment," "an example," "example," etc. indicate that the embodiment or example so described may include specific features, structures, characteristics, properties, elements, or Limits, but not every embodiment or example necessarily includes specific features, structures, characteristics, properties, elements, or limits. In addition, the repeated use of the phrase "according to an embodiment of the present application" may refer to the same embodiment, but it does not necessarily refer to the same embodiment.
[0011] For simplicity, certain technical features known to those skilled in the art are omitted in the following description.
[0012] According to an embodiment of the ...
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The invention provides a voltage and current alternative sampling circuit. The voltage and current alternative sampling circuit comprises a sampling chip, and a first filtering module and a second filtering module which are electrically connected with the sampling chip. The sampling chip is electrically connected with a reset circuit, a peripheral oscillation circuit, a filtering circuit and a power supply peripheral filtering circuit. The voltage and current alternative sampling circuit is provided with the first filtering module, the second filtering module, the reset circuit, the sampling chip, the peripheral oscillation circuit, the filtering circuit, the power supply peripheral filtering circuit and the like, so that the safety insulation and the sampling precision are well improved, and the power consumption of the chip is lowered.
Description
Technical field [0001] The present invention specifically relates to a voltage and current exchange circuit. Background technique [0002] The existing AC sampling circuit uses the AC voltage to directly pass through the resistance divider method, and then enters the metering chip. In this method, the dispersion of the resistance is large, the accuracy is not high, and the metering chip is in the hot ground, and the high voltage during debugging is affected. The operation is safe and the power consumption of the metering chip is relatively high; therefore, a voltage and current exchange circuit is urgently needed to solve the above problems. Summary of the invention [0003] The purpose of the present invention is to provide a voltage and current exchange circuit for the shortcomings of the prior art. The voltage and current exchange circuit can improve metering accuracy, enhance safety insulation and reduce power consumption. [0004] In order to meet the above requirements, the t...
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IPC IPC(8): G01R19/00
Inventor 付晓邹双洪张乾樊银斌
Owner 成都华立达信息技术有限公司