Portable AC (alternating current) constant-current source powered by rechargeable batteries
A technology of alternating current and constant current source, which is applied in the direction of adjusting electric variables, instruments, control/regulation systems, etc., and can solve problems such as inconvenient to carry constant current source for AC power supply, different site conditions, and inconvenient constant current source , to achieve fast and accurate output current and test time, stable output current, and stable current frequency
Pending Publication Date: 2019-06-28
济南铂晶电子科技股份有限公司
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Problems solved by technology
During the detection process, the site conditions are different, there are remote places, it is not convenient to carry the constant current source of AC power supply, there are places where power is cut off for maintenance, and there are places with small spaces
In the maintenance of these aspects, the constant current source powered by the bulky power grid is very inconvenient, which is the deficiency of the prior art
Method used
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[0027] A specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.
[0028] Such as Figure 1-Figure 7 As shown, the present invention includes a charging circuit, a voltage boosting circuit, a sampling circuit, an AC signal conditioning circuit, a digital power amplifier circuit, a storage module, a display module, a key module and a microprocessor.
[0029] The charging circuit is electrically connected to a charging interface and a charging indicator light, the charging interface is a USB port, the charging indicator light is a diode DS1 and a diode DS2, and the charging circuit includes a chip U3, a resistor R11, a resistor R13, and a resistor R14 , resistor R15, capacitor C12 and capacitor C13, the pin 1 and pin 3 of the chip U3 are connected to the negative pole of the USB port, the pin...
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The invention discloses a portable AC (alternating current) constant-current source powered by rechargeable batteries. The portable AC constant-current source powered by the rechargeable batteries comprises an AC constant-current source, and is characterized in that the AC constant-current source comprises a charging circuit, a booster circuit, a sampling circuit, an AC signal conditioning circuit, an output digital amplifier circuit, a storage module, a display module, a key module and a microprocessor. The invention relates to the field of electrical equipment, in particular to the portableAC constant-current source powered by the rechargeable batteries. The portable AC constant-current source powered by the rechargeable batteries has the advantages as follows: the AC constant-current source is portable, the volume is equivalent to the specification of a handheld multimeter, the rechargeable batteries are adopted to supply power to the portable AC constant-current source, continuousmaximum power output time of the portable AC constant-current source is not shorter than 5 h, and the portable AC constant-current source has a charging function, adopts a numeric keypad to set functions, rapidly and accurately sets output current and testing time, and has stable output current and stable current frequency.
Description
technical field [0001] The invention relates to the field of electrical equipment, in particular to a portable AC current constant current source powered by a rechargeable battery. Background technique [0002] At present, a large number of current transformers are used in electrical installations. After the electrical installations are put into operation, regular maintenance is required to determine the effectiveness of the current transformers. During the testing process, the on-site conditions are different. There are remote places where it is not convenient to carry a constant current source for AC power supply. In the maintenance of these aspects, the heavy grid-powered constant current source is very inconvenient, which is the deficiency of the prior art. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a portable AC current constant current source powered by a rechargeable battery, which can clip the peak ...
Claims
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IPC IPC(8): G05F1/67
Inventor 季红雨张建方
Owner 济南铂晶电子科技股份有限公司