Power supply test circuit
A technology of power supply and test circuit, which is applied in the field of test circuit, and can solve the problems that the main board cannot work normally, the power supply does not match the main board, etc.
Inactive Publication Date: 2013-12-25
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Problems solved by technology
[0002] At present, the power supply of many electronic products is designed to achieve the purpose of energy saving and environmental protection by improving the conversion efficiency of the power supply. However, in the design and testing of the motherboard, the improvement of the conversion efficiency of the power supply may cause the power supply Therefore, testing the power supply to make it match the motherboard has become an urgent problem in the industry
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[0011] Please refer to figure 1 The power supply test circuit 100 of the present invention is arranged on a substrate for connecting a power supply and a main board, and by testing the power supply to adjust the load on the main board so that the main board and the main board The power supply matches. A preferred embodiment of the power supply test circuit 100 includes at least one test unit 1 (three test units in this embodiment) and at least one conversion unit 10 (one conversion unit in this embodiment). Each test unit 1 includes a connector J1 for connecting the power supply to receive voltage from the power supply, a connector J1 for connecting the main board to provide the output voltage of the power supply to the Connector J2 of the motherboard, a sensing resistor R0, a controller 11, and an electronic switch (an N-channel field effect transistor Q1 in this embodiment). Each conversion unit 10 includes a converter U1, resistors R1-R7, a capacitor C1, and a connector J...
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A power supply test circuit comprises a test unit and a conversion unit. The test unit comprises a first connector, a second connector, an induction resistor, a controller and an electronic switch. The conversion unit comprises a conversion chip and a third connector. A first terminal of the electronic switch is connected with the first connector via the induction resistor, a second terminal is connected with a control pin of the controller and a third terminal is connected with the second connector. Two input pins of the controller are connected with two ends of the induction resistor. Two input pins of a convertor are connected with two output pins of the controller and two output pins are connected with the third connector. The controller acquires a voltage value on the induction resistor, converts the voltage value into a current value and then provides to the conversion chip. The conversion chip converts the current value into a SMBUS signal and then outputs to monitoring equipment through the third connector so as to display, outputs a control signal through the control pin and controls conduction of the electronic switch so that an output voltage of the power supply is provided to a mainboard. Through adjusting a load on the mainboard, the mainboard is matched with the power supply.
Description
technical field [0001] The invention relates to a test circuit, in particular to a test circuit of a power supply. Background technique [0002] At present, the power supply of many electronic products is designed to achieve the purpose of energy saving and environmental protection by improving the conversion efficiency of the power supply. However, in the design and testing of the motherboard, the improvement of the conversion efficiency of the power supply may cause the power supply Therefore, it has become an urgent problem to be solved in the industry to test the power supply to make it match with the motherboard. Contents of the invention [0003] In view of this, it is necessary to provide a power supply test circuit to match the power supply with the motherboard. [0004] A power supply test circuit, including at least one test unit and at least one conversion unit, the test unit includes a first connector for connecting a power supply to receive voltage from the p...
Claims
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IPC IPC(8): G01R31/40
CPCG01R31/40
Inventor 田波吴亢
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD