Computer startup circuit

Abstract

The utility model relates to the technical field of computers, and discloses a computer starting-up circuit in order to solve the technical problem that an existing computer starting-up circuit is prone to faults. Comprising a trigger circuit module, a BIOS module, a switch button used for providing trigger switch signals for the trigger circuit module through pressing, a three-terminal voltage stabilizer used for providing initial level signals for the trigger circuit module, a battery used for supplying power to the BIOS module, and an oscillator used for providing clock signals for the trigger circuit module and the BIOS module. A trigger output end of the trigger circuit module is connected with a base electrode of a triode Q3, an emitter electrode of the triode Q3 is grounded, a collector electrode of the triode Q3 inputs pull-up voltage VCC2 through a pull-up resistor R50, and the collector electrode of the triode Q3 is used for being connected with a trigger pin of an ATX power supply. The computer starting-up circuit combines the functions of starting-up trigger control, stable power management, clock synchronization and the like, and the reliability of a computer system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of computers, in particular to a computer startup circuit. Background Art

[0002] The computer power-on circuit is a key part of computer hardware, responsible for starting the computer system when the user presses the power button. The design of the power-on circuit involves many technical aspects, including power management, initialization process, system self-test (POST, Power-On Self-Test) and boot loading.

[0003] One of the basic tasks of the power supply circuit is to manage the power supply of the computer. This includes the distribution, monitoring and protection of power supply. Modern computers usually contain multiple power supplies, such as motherboard power supply, graphics card power supply, etc. The power supply circuit needs to ensure that these power supplies work correctly at startup and be able to detect and respond to abnormal situations, such as overcurrent, overheating, etc.

[0004] Computer boot circuits usually contain firmware, which is software pre-stored in the hardware. These firmware can be based on BIOS (Basic Input Output System) or UEFI (Unified Extensible Firmware Interface). They provide low-level software functions required for computer startup and initialization.

[0005] In the existing computer power on and off circuit, the existing technology has low controllability and common fault phenomena of the motherboard power on circuit occur: such as failure to power on the motherboard, which is easy to occur when the temperature is low; after powering on, it automatically shuts down after a few seconds; cannot power on; cannot shut down; automatically powers on after the host is powered on. Utility Model Content

[0006] The utility model aims to provide a computer startup circuit to solve the technical problem that the existing computer startup circuit is prone to failure.

[0007] To achieve the above purpose, the specific technical solution of a computer startup circuit of the utility model is as follows:

[0008] A computer startup circuit comprises a trigger circuit module, a BIOS module, a switch button for providing a trigger switch signal to the trigger circuit module by pressing, a three-terminal voltage regulator for providing an initial level signal to the trigger circuit module, a battery for supplying power to the BIOS module, and an oscillator for providing a clock signal to the trigger circuit module and the BIOS module;

[0009] The trigger output terminal of the trigger circuit module is connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, the collector of the transistor Q3 inputs the pull-up voltage VCC2 through the pull-up resistor R50, and the collector of the transistor Q3 is used to connect to the trigger pin of the ATX power supply.

[0010] By using a three-terminal regulator and a battery, the circuit can provide a stable power supply to ensure that the computer can obtain a reliable power supply when it is turned on; the switch button is used to provide a trigger switch signal to the trigger circuit module by pressing it, so that the user can manually start the computer; the oscillator provides a clock signal to the trigger circuit module and the BIOS module to ensure that the system can be synchronized and work together when it is started; through the design of the trigger circuit module and the transistor Q3, it can be effectively connected to the trigger pin of the ATX power supply to realize the management and control of the power supply, which helps to achieve effective management of the power supply, including precise control of the startup and shutdown processes.

[0011] The computer startup circuit combines the functions of startup trigger control, stable power management and clock synchronization, thereby improving the reliability of the computer system.

[0012] Furthermore, the trigger output terminal of the trigger circuit module is connected to the base of the transistor Q3 through the resistor R47 and the diode D4 in sequence, the anode of the diode D4 is connected to the resistor R47, and the cathode of the diode D4 is connected to the base of the transistor Q3.

[0013] By adding resistor R47 to the trigger output of the trigger circuit module, the current can be effectively controlled. Resistor R47 limits the flow of current, helping to ensure that the current in the circuit remains within a safe and appropriate range, improving the stability of the circuit.

[0014] The presence of diode D4 allows current to flow only in a certain direction, from the anode to the cathode of the diode. This helps prevent the influence of reverse current and increases the stability and reliability of the circuit.

[0015] The role of diode D4 is also to protect the trigger circuit module and the base of transistor Q3. The diode can prevent unwanted current from flowing in the reverse direction into these components, providing an additional layer of circuit protection and reducing the risk of damage.

[0016] By adding diode D4 to the trigger output of the trigger circuit module, signal shaping can be achieved. This helps ensure that the shape and waveform of the output signal meet expectations and improves the anti-interference and stability of the system.

[0017] Preferably, the transistor Q3 is an NPN transistor.

[0018] Furthermore, the power input end of the three-terminal regulator is used to connect to the normal power supply end of the ATX power supply, the power output end of the three-terminal regulator is connected to the first pin of the jumper seat through the diode D2, the voltage adjustment end of the three-terminal regulator is grounded through the resistor R44, and the ground end of the three-terminal regulator is grounded.

[0019] The presence of diode D2 ensures that current can only flow from the power output of the three-terminal regulator to the circuit, preventing the possibility of reverse current. This helps prevent the current in the circuit from flowing backwards during shutdown or other situations, providing effective protection for the power supply.

[0020] By using a jumper socket to connect the power output of the three-terminal regulator to a specific part of the circuit, the circuit is configurable. This design allows flexible configuration through jumper connections according to specific needs to meet different power distribution requirements.

[0021] The power supply is regulated by connecting the voltage regulation terminal of the three-terminal regulator to ground through resistor R44. The ground connection of resistor R44 provides a reference point for voltage regulation, ensuring that the power supply output is within the set range and improving the stability of the circuit.

[0022] The above improvements help to optimize the connection, protection and regulation of power supply, and improve the system's adaptability and stability to power supply.

[0023] Furthermore, the positive electrode of the battery is connected to the first pin of the jumper seat through the diode D3, the first end of the BIOS module is connected to the second pin of the jumper seat and the second end of the oscillator respectively, and the third pin of the jumper seat is grounded.

[0024] By connecting the positive terminal of the battery to pin 1 of the jumper holder, the presence of diode D3 ensures that the battery can only provide current to the circuit without being interfered by reverse current from the circuit. This helps protect the battery from unnecessary discharge or damage, and improves the battery life and reliability.

[0025] The first terminal of the BIOS module is connected to the second terminal of the oscillator. Through this connection, the clock signal provided by the oscillator can be synchronized to the BIOS module to ensure the coordinated operation of various components in the system.

[0026] Furthermore, one end of the switch button is grounded, the other end of the switch button is connected to the fourth end of the trigger circuit module through a resistor R45, the power output end of the three-terminal regulator is connected to the fourth end of the trigger circuit module through a resistor R46, the third end of the trigger circuit module is connected to the power output end of the three-terminal regulator, and the first end of the trigger circuit module is connected to the first end of the oscillator and the second end of the BIOS module respectively.

[0027] One end of the switch button is grounded, and the other end is connected to the fourth end of the trigger circuit module through resistor R45, so as to realize effective control of the power-on operation. The user can manually start the computer by pressing the switch button to provide a trigger power-on signal to the trigger circuit module through resistor R45.

[0028] By introducing resistor R45 between the switch button and the trigger circuit module, the current can be controlled, which helps prevent excessive current and improves the stability and safety of the circuit.

[0029] The power output terminal of the three-terminal voltage regulator is connected to the fourth terminal of the trigger circuit module through the resistor R46. This connection method helps to adjust the output current of the voltage regulator. The current in the circuit can be adjusted through the resistor R46 to ensure that sufficient current is provided to the trigger circuit module when the system is turned on, thereby achieving stable startup of the system.

[0030] The third terminal of the trigger circuit module is connected to the power output terminal of the three-terminal voltage regulator, and the first terminal of the trigger circuit module is connected to the first terminal of the oscillator and the second terminal of the BIOS module. Such connection ensures that the trigger circuit module can obtain the necessary signals from the voltage regulator, oscillator and BIOS module, and realizes the effective cooperation between the various components.

[0031] These design improvements help the user control the power-on operation. At the same time, the introduction of resistors R45 and R46 realizes the control of current and regulation of the regulator output, improving the stability and performance of the circuit.

[0032] The computer startup circuit provided by the utility model has the following advantages:

[0033] The computer startup circuit cleverly combines key functions such as startup trigger control, stable power management and clock synchronization, significantly improving the reliability of the computer system. This design not only ensures the stability of the power supply, but also provides users with a more reliable and efficient computer experience through user-friendly manual startup and clock synchronization mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The utility model provides a functional structure diagram of the computer startup circuit.

[0035] In the figure: U7, three-terminal regulator; U11, oscillator; U12, trigger circuit module; U13, BIOS module; J1, jumper seat; SW1, switch button. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] See also Figure 1The utility model provides a computer startup circuit, including a startup switch button SW1, a three-terminal regulator U7 for voltage conversion, a battery BAT4 for powering a BIOS module, a trigger circuit module U12, an oscillator U11, and a BIOS module U13. The oscillator U11 is used to provide a clock signal to the BIOS module and the trigger circuit module U12.

[0038] The power input terminal of the three-terminal voltage regulator U7 (the third terminal of U7 in the figure) is connected to the ATX power supply (the ATX power supply normally supplies power to it), the power output terminal of the three-terminal voltage regulator U7 (the fourth terminal of U7 in the figure) is connected to the first pin of the jumper seat J1 through the diode D2, the voltage adjustment terminal of the three-terminal voltage regulator U7 (the first terminal of U7 in the figure) is grounded through the resistor R44, the ground terminal of the three-terminal voltage regulator U7 (the second terminal of U7 in the figure) is grounded, and the power output terminal of the three-terminal voltage regulator U7 is used to power the trigger circuit module U12 and the BIOS module.

[0039] The positive pole of the battery BAT4 is connected to the 1st pin of the jumper seat J1 through the diode D3, the 1st end of the BIOS module U13 is respectively connected to the 2nd pin of the jumper seat J1 and the 2nd end of the oscillator U11, the 3rd pin of the jumper seat J1 is grounded, and the 1st and 2nd pins of the jumper seat J1 are provided with jumper caps.

[0040] One end of the switch button SW1 is grounded, and the other end of the switch button SW1 is connected to the fourth end of the trigger circuit module through a resistor R45. The power output end of the three-terminal regulator U7 is connected to the fourth end of the trigger circuit module through a resistor R46. The third end of the trigger circuit module U12 is connected to the power output end of the three-terminal regulator U7. The first end of the trigger circuit module U12 is connected to the first end of the oscillator U11 and the second end of the BIOS module respectively. The second end of the trigger circuit module U12 is connected to the base of the transistor Q3 through a resistor R47 and a diode D4 in sequence.

[0041] The emitter of the transistor Q3 is grounded, the collector of the transistor Q3 is connected to the power supply VCC2 via the resistor R50, and the collector of the transistor Q3 serves as an output end of a power-on signal.

[0042] The third terminal and the fourth terminal of the oscillator U11 are connected to the two ends of the crystal oscillator Y2 respectively, and the two ends of the crystal oscillator Y2 are grounded through matching capacitors respectively.

[0043] When it is necessary to turn on the computer, the moment the switch button SW1 is pressed, the switch button SW1 is grounded, and the voltage of the power button SW1 becomes low, which pulls down the voltage of the 4th terminal of the trigger circuit module U12, and the trigger circuit module U12 does not work. When the switch button SW1 is released, the voltage of the switch button SW1 becomes high, the voltage of the 4th terminal of the trigger circuit module U12 becomes high, and the 2nd terminal (trigger output terminal) of the trigger circuit module U12 outputs a high-level trigger signal. At this time, the base of the transistor Q3 is at a high level, and the transistor Q3 is turned on. The collector of the transistor Q3 is connected to the ATX power supply, and the port in the figure is ON. The voltage of this pin of the ATX power supply changes from a high level to a low level, so the power supply starts to work, and the other pins of the power supply supply power to the motherboard respectively, and the motherboard is in the startup state.

[0044] When the computer needs to be shut down, the moment the power button SW1 is pressed, the voltage of the power button SW1 becomes low again, and the trigger circuit module U12 is not triggered; at the moment the power button SW1 is released, the voltage of the power button SW1 becomes high, the trigger circuit module U12 is triggered, and the trigger output end outputs a low-level trigger signal, the base of the transistor Q3 is at a low level, and the transistor Q3 is cut off. At this time, the ON pin of the ATX power supply becomes high again, the ATX power supply stops working, and the motherboard is in a stopped state.

[0045] In summary, the computer startup circuit provided by the utility model realizes effective control of the startup and shutdown of the computer by using the startup switch button SW1, the trigger circuit module U12, and the related resistors and diodes. When the user presses and releases the startup button SW1, the working state of the computer can be accurately triggered and stopped.

[0046] The use of a three-terminal regulator U7, a battery BAT4, and a trigger circuit module U12 helps to effectively manage power. Battery BAT4 provides backup power to ensure that the computer can continue to work when the main power is cut off. The design of the trigger circuit module U12 and the three-terminal regulator U7 enables controllable management of power.

[0047] The technical solution provided by the utility model realizes a precisely controllable and reliable computer startup circuit by cleverly designing a switch button, a trigger circuit module, a battery and a power management part.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A computer startup circuit, characterized in that: It comprises a trigger circuit module (U12), a BIOS module (U13), a switch button (SW1) for providing a trigger switch signal to the trigger circuit module (U12) by pressing, a three-terminal regulator (U7) for providing an initial level signal to the trigger circuit module (U12), a battery (BAT4) for supplying power to the BIOS module (U13), and an oscillator (U11) for providing a clock signal to the trigger circuit module (U12) and the BIOS module (U13); The trigger output end of the trigger circuit module (U12) is connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, the collector of the transistor Q3 inputs the pull-up voltage VCC2 through the pull-up resistor R50, and the collector of the transistor Q3 is used to connect to the trigger pin of the ATX power supply.

2. A computer startup circuit according to claim 1, characterized in that: The trigger output terminal of the trigger circuit module (U12) is connected to the base of the transistor Q3 through the resistor R47 and the diode D4 in sequence, the anode of the diode D4 is connected to the resistor R47, and the cathode of the diode D4 is connected to the base of the transistor Q3.

3. A computer startup circuit according to claim 2, characterized in that: Transistor Q3 is an NPN transistor.

4. A computer startup circuit according to claim 3, characterized in that: The power input terminal of the three-terminal voltage regulator (U7) is used to connect to the normal power supply terminal of the ATX power supply, the power output terminal of the three-terminal voltage regulator (U7) is connected to the first pin of the jumper seat (J1) through the diode D2, the voltage adjustment terminal of the three-terminal voltage regulator (U7) is grounded through the resistor R44, and the ground terminal of the three-terminal voltage regulator (U7) is grounded.

5. A computer startup circuit according to claim 4, characterized in that: The positive electrode of the battery (BAT4) is connected to the first pin of the jumper seat (J1) through the diode D3, the first end of the BIOS module (U13) is connected to the second pin of the jumper seat (J1) and the second end of the oscillator (U11), respectively, and the third pin of the jumper seat (J1) is grounded.

6. A computer startup circuit according to claim 5, characterized in that: One end of the switch button (SW1) is grounded, the other end of the switch button (SW1) is connected to the fourth end of the trigger circuit module (U12) through a resistor R45, the power output end of the three-terminal voltage regulator (U7) is connected to the fourth end of the trigger circuit module (U12) through a resistor R46, the third end of the trigger circuit module (U12) is connected to the power output end of the three-terminal voltage regulator (U7), and the first end of the trigger circuit module (U12) is respectively connected to the first end of the oscillator (U11) and the second end of the BIOS module (U13).

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