power adapter circuit

A power adapter and circuit technology, applied in data processing power supply, measuring device, measuring flow/mass flow, etc., can solve problems such as wrong voltage, wrong time sequence delay time, incompatibility between motherboard and power supply, etc. Compatible Effects

Inactive Publication Date: 2011-11-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After the mainboard is developed and put into the market, users may use various ATX power supplies. Due to the different products of various power supply manufacturers, the mainboard may not work properly when it is equipped with a certain power supply, that is, the mainboard and power supply. Incompatibility, and one of the main reasons for this incompatibility is that the timing delay time is incorrect or the voltage is incorrect, which cannot meet the requirements

Method used

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Embodiment Construction

[0012] refer to figure 1 A preferred embodiment of the power adapter circuit of the present invention includes a first switching element such as a field effect transistor Q3, a second switching element such as a first transistor Q1, a third switching element such as a second transistor Q2, A capacitor C, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a diode D, wherein the first, second and third switching elements can also be selected according to the designer According to the needs, select other components, the first and second transistors Q1 and Q2 are NPN transistors, and the field effect transistor Q3 is an N-channel field effect transistor.

[0013] A 5V system power supply 5V_SYS sequentially passes through the first resistor R1 and the capacitor C and then is grounded, the gate of the field effect transistor Q3 is connected to the node between the first resistor R1 and the capacitor C, and the drain is connected to the node bet...

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Abstract

A power adaptation circuit for outputting a power state signal, which includes three switch elements, a diode, three resistors and a capacitor, wherein each switch element includes a first terminal, a second terminal and a At the third end, a system power supply is grounded sequentially through the first resistor and capacitor, the first end of the first switching element is connected to the node between the first resistor and the capacitor, and is also connected to the anode of the diode, and the second end is connected to the second end through the first The two resistors are connected to a backup power supply, and are also connected to the first terminal of the second switching element, the third terminal is grounded, the second terminal of the second switching element is grounded, and the third terminal is connected to the system power supply through the third resistor, and serves as the The output end of the power adaptation circuit, the third end of the third switch element is used to receive a power-on signal, the second end is grounded, and the third end is connected to the cathode of the diode. The above power adapter circuit can effectively solve the problem of incompatibility between the computer motherboard and the power supply.

Description

technical field [0001] The invention relates to a power adapter circuit, in particular to a power adapter circuit applied to a computer main board. Background technique [0002] The power supply not only provides voltage for the computer hardware, but also has a certain signal connection with the motherboard, and the signals have a certain relationship in time sequence, that is, sequence. Timing is an important condition for the good cooperation between the power supply and the motherboard, and it is also the most common reason why the computer cannot be turned on normally, and the power supply is not compatible with the motherboard. The most important thing in the timing is the output voltage of the system power supply (usually represented by +5V) and The relationship between the power state signal PWR_GOOD and the power-on signal PS_ON, when the power state signal PWR_GOOD is at a high level, it means that the power supply is ready, when it is at a low level, it means that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/26
CPCG06F1/26
Inventor 熊金良
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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