KR0129710Y1 - Apparatus for checking a power supply applied to ascertain load in a computer - Google Patents

Abstract

The present invention relates to an improved device for checking the power provided to each load inside the computer 100, and to indicate that the + 5V DC power provided to the load inside the computer is a normal DC power supply, the input + A first sensor unit 130 for determining a minimum sensing level of the potential level of the DC voltage of 5V; The second sensor unit 160 for determining a minimum sensing level of the potential level of the input + 3.3V DC voltage to indicate that the + 3.3V DC power provided to the other load inside the computer 100 is a normal DC power supply. Wow; Since the AND gate 170 is configured, the system power of the more stable computer 100 can be inspected by checking the + 5V DC power supply provided to each load inside the computer as well as the + 3.3V DC power supply.

Description

Device that checks the power supplied to each load inside the computer

1 is a block diagram for checking a computer power supply according to an embodiment of the present invention.

2 is a waveform diagram provided to the sensor unit of FIG. 1 in accordance with an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

100: computer 110: transformer

130, 160: sensor 140: regulator

170: end gate

The present invention relates to a power supply for a system used in a computer, and more particularly, to an improved device for checking the power supplied to each load inside a computer.

There are + 3.3V, + 5V, + 12V, -5V, and -12V for the system power used in the computer. Most of the general power used for the main board mounted inside the conventional computer is DC (direct) current) + 5V supply. Thus, when the user turns on the computer, only the + 5V power source is checked on the main board inside the computer, so that each circuit or load mounted inside the computer, for example, a complementary metal-oxide semiconductor It was determined that power provided to the IC, the transistor-transistor logic (TTL) IC, the central processing unit (CPU), the core chip, and the like are normally input.

However, in recent years, the power provided to each circuit or load inside a computer is gradually being added to a + 3.3V power supply, for example, inside a notebook computer and some desktop computers. An additional + 3.3V supply is often used in the circuits or loads installed.

Therefore, in the conventional apparatus for checking the power supplied to each load inside the computer, when checking only the + 5V power supply and determining that each circuit or load in the computer is normal power, the + 3.3V power is Even if abnormal power is applied to the circuit or load to be applied, it may be determined that normal power is applied.

Therefore, the present invention has been made to solve the conventional problems, and its object is to provide an improved device for simultaneously checking + 3.3V power as well as the + 5V power supplied to each load in a computer. have.

The present invention is a device for checking the power provided to each load inside the computer to achieve the object, in the computer system in the system loads the DC voltage for the system used in the computer to each load (load) inside the computer A transformer for outputting the input AC voltage by changing the input AC voltage to a preset DC voltage; A first sensor for determining a minimum sensing level of the potential level of the changed DC voltage from the transformer to indicate that the DC power provided to the load inside the computer is a normal DC power; A second sensor for determining a minimum sensing level of a changed DC voltage from a regulator and a regulator for changing a DC power supply from the transformer to another constant voltage DC level in a load requiring a different DC potential inside the computer Wealth; In accordance with the signal from the first sensor unit and the signal from the second sensor unit, each of the inside of the computer includes a power determining means for generating a signal indicating that the DC power supplied to each load in the computer is a normal DC power. And a device for checking the power supplied to the load.

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the present invention.

1 is a block diagram of a preferred embodiment of the present invention for checking the power provided to each load inside the computer 100, the transformer 110, the first sensor unit 130, the regulator 140, The second sensor unit 160 and the end gate 170 are included.

First, as shown in FIG. 1, when the power of the computer 100 is reset or turned on by a user, an external power supply (AC) power is supplied from the transformer 110 of the computer 100. Is provided. A transformer 110 is then input to provide a DC voltage for the system used in the computer 100 (eg, + 5V) to each load or first circuit 120 within the computer 100. The AC voltage is changed to a predetermined DC voltage (eg, + 5V), and the changed + 5V power is provided to the first circuit 120, the first sensor unit 130, and the regulator 140, respectively. As described above, the first circuit 120 is a load (eg, COMS, TTL) requiring a DC power supply of + 5V.

On the other hand, to indicate that the + 5V DC power provided to the load inside the computer is a normal DC power supply, the first sensor unit 130 has a potential level of the changed + 5V DC voltage provided from the transformer 110. Determine the minimum detection level of. For example, as shown in FIG. 2A, when the potential level of the + 5V DC voltage provided from the transformer 110 reaches + 4.5V, which is 90%, the first sensor unit 130 Logic signal 1 is output and provided to AND gate 170 indicating that a normal + 5V DC power supply is provided, but an abnormal DC power supply is provided when the potential level of the + 5V DC voltage does not reach + 4.5V, which is 90%. The logic signal 0 indicating that the signal is output is provided to the AND gate 170.

On the other hand, the regulator 140 changes the received + 5V DC power from the transformer 110 back to the DC level of + 3.3V for a load requiring a + 3.3V DC potential inside the computer, and the changed +3.3 DC power of V is provided to the second circuit 150 and the second sensor unit 160, respectively. The second circuit 150 is another load (eg, CPU and core chip) that requires a DC power supply of + 3.3V as described above.

Meanwhile, in order to indicate that the + 3.3V DC power provided to the load inside the computer (eg, the CPU and the core chip) is a normal DC power supply, the second sensor unit 160 changes the +3.3 supplied from the regulator 140. The minimum detection level of the potential level of the DC voltage of V is discriminated. For example, as shown in FIG. 2B, when the potential level of the + 3.3V DC voltage received from the regulator 140 reaches + 2.97V, which is 90%, the second sensor unit 160 Outputs a logic signal 1 indicating that a normal + 3.3V DC power is provided and provides it to the AND gate 170, but when the potential level of the + 3.3V DC voltage does not reach 90% and + 2.97V, the DC power is abnormal. The logic signal 0 indicating that this is provided is output to the AND gate 170.

The AND gate 170 is a DC power source (eg, + 3.3v) provided to each load in the computer according to a logic signal provided from the first sensor unit 130 and a logic signal provided from the second sensor unit 160. Or + 5V) generates a power good signal indicating that it is a normal DC power supply. For example, when the AND gate 170 receives the logic signal 1 from the first and second sensor units 130 and 160, respectively, the logic signal 1 which is a power good signal indicating that normal DC power is applied to each load in the computer. If not, it generates a logic signal 0 indicating that an abnormal DC power supply is applied to each load.

As described above, the improved apparatus according to the present invention checks the system power supply of the computer 100 more stable by checking the DC power supply of + 3.3V as well as the + 5V DC power provided to each load inside the computer. can do.

Claims (6)

A device for checking the power provided to each load inside a computer, comprising: in a computer system, an input AC to provide a DC voltage for a system used in the computer to each load inside the computer. A transformer converting the voltage into a predetermined DC voltage and outputting the converted voltage; A first sensor unit for determining a minimum sensing level of the potential level of the changed DC voltage from the transformer to indicate that the DC power provided to the load inside the computer is a normal DC power; A regulator for converting the DC power from the transformer back to another constant voltage DC level in a load requiring a different DC potential inside the computer; A second sensor unit for discriminating the minimum sensing level of the changed DC voltage from the regulator means; A power determining means for generating a signal indicating that the DC power provided to each load in the computer is a normal DC power according to the signal from the first sensor part and the signal from the second sensor part; Device for checking the power supplied to the load of. The method of claim 1, wherein the first sensor unit is provided to each load inside the computer, characterized in that for generating a logic signal 1 indicating that the normal DC power supply when the DC potential level provided from the transformer reaches up to 90%. Device that checks the power. 2. The apparatus of claim 1, wherein the transformer outputs an AC voltage at a DC voltage of 5V. The apparatus of claim 3, wherein the regulator converts the DC 5V voltage from the transformer into 3.3 and outputs the converted voltage. The computer interior of claim 1 or 4, wherein the second sensor unit generates a logic signal 1 indicating a normal 3.3V DC power supply when the changed DC potential level provided from the regulator reaches 90%. Device to check the power provided to each load of the. The apparatus of claim 1, wherein the power determining means comprises an AND gate.