AC load

Abstract

The invention discloses an AC load, and is designed for providing an AC load with continuously regulated load. The invention comprises a current-limiting resistance which connected with a rectification circuit, wherein, a filter circuit is connected between the positive terminal and the negative terminal of the rectification circuit in parallel; and also comprises a voltage waveform sampling and current signal generating circuit and an electronic resistance which are connected between the positive terminal and the negative terminal of the filter circuit in parallel. The AC load provided by the invention has the characteristics of high reliability, convenient remote control, simple operation, continuous regulation of the load, strong universality, etc; meanwhile, the characters of the invention are the same as the regulation of YDT / 1095 of Ministry of Posts and Tele Communication, and can fulfill the requirements of the research and development, testing and production of all UPS, inverters and other uninterruptible power systems.

Description

technical field [0001] The invention relates to an AC load. Background technique [0002] UPS (AC uninterruptible power supply), inverter and other uninterruptible power supply equipment whose output is AC require a lot of tests and experiments in the process of R&D and production. AC loads are indispensable equipment in testing and experiment activities. Especially in recent years, with the development of information construction represented by the network, uninterruptible power supply equipment such as UPS and inverters have been widely and widely used in banks, railways, public security, telecommunications, highways and other fields. Since uninterruptible power supply equipment such as UPS and inverter are used in very important places, this requires uninterruptible power supply equipment such as UPS and inverter to have very high reliability, and in turn, uninterruptible power supply equipment such as UPS and inverter In the development and production stages of power su...

AI Technical Summary

Problems solved by technology

[0007] (2) The adjustment of the load size is controlled by the on-off of the switch, the control of the load is inconvenient and the efficiency is low

[0008] (3) The adjustment of the load size is controlled by the on-off of the switch. It is difficult to realize the remote control of the load size. The load is placed near the device under test, and the heat generation of the load has a great impact on the environment.

[0009] (4) The adjustment of the load size is controlled by the on-off of the switch, and the load size cannot be changed continuously, which cannot meet the requirements of use

[0010] (5) The versatility of this load is not strong. For the same load, it cannot meet the requirements of high-power and low-power equipment at the same time.

[0011] Due to the above defects, it is difficult to meet the needs of research and development, production, and testing of UPS, inverters, and other devices whose output is AC.

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