Power Adapter Test Circuit

Abstract

The invention discloses a power supply adapter test circuit. The power supply adapter test circuit comprises a switch, a battery, a first light emitting diode, a first resistor, an interface, a second light emitting diode, a second resistor, and a third light emitting diode; the anode of the battery is connected to one end of the switch; the cathode of the first light emitting diode is connected to the cathode of the battery; the first terminal of the first resistor is connected to the anode of the first light emitting diode; the interface has two terminals, the first terminal is connected to the other end of the switch and the second terminal is connected to the other end of the first resistor; the anode of the second light emitting diode is connected to the anode pin of the power supply adapter; one end of the second resistor is connected to the cathode of the second light emitting diode, and the other end of the second resistor is connected to the cathode pin of the power supply adapter; the cathode of the third light emitting diode is connected to the anode of the second light emitting diode; and the anode of the third light emitting diode is connected to the cathode of the second light emitting diode. The power supply adapter test circuit can not only fast and accurately detect defects of the power supply adapter like the short circuit, disconnection, etc, but also can prevent a main board from burning which is due to short circuit caused by tin connection inside the power supply adapter so as to save the manufacture cost.

Description

【Technical field】 [0001] The invention relates to an intelligent test circuit and method, in particular to a power adapter test circuit and method. 【Background technique】 [0002] In the production process of power converters, surface mount technology is mostly used to deal with the soldering problem between components and printed circuit boards, but the solder paste, printing machine, and component placement machine required for surface mount technology work, All may affect the production quality of surface mount technology. On the one hand, if the R&D personnel layout the circuit too tightly, it is easy to cause a short circuit caused by overflowing tin inside the power plug during soldering. On the other hand, if the solder paste is insufficient, or the time of the tin furnace is too fast, it may cause an open circuit due to cold soldering or empty soldering, and the general cold soldering or empty soldering situation cannot be easily detected by the naked eye. When the...

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Problems solved by technology

[0004] Therefore, the object of the present invention is to provide a power adapter test circuit to solve the problems of inaccurate detection, long working time and increased working cost in the prior art.

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