CN205983380U - DC power supply circuit for computer - Google Patents

Abstract

The utility model discloses a DC power supply circuit for a computer, which comprises a resistor R1, a capacitor C1, a NOT gate F1, a triode VT1, a diode D1 and an inductance L. One end of the inductance L is respectively connected to a power supply VCC, a resistor R3, a resistor R7 and a resistor R8, the other end of the resistor R7 is connected to the collector of the triode VT1, the base of the triode VT1 is respectively connected to the negative pole of the grounding diode D2 and the other end of the resistor R8, the emitter of the triode VT1 is connected to the resistor R6, the negative pole of the diode D1 and the output terminal Vo respectively, and the other ends of the resistor R6 are respectively Connect the grounding resistor R5 to the input terminal of the NOT gate F4, and connect the output terminal of the NOT gate F4 to the grounding capacitor C2 and the resistor R4 respectively. The utility model computer DC power supply circuit is controlled by a gate circuit and a triode, which not only has a voltage stabilizing function, but also has a short circuit protection function, high safety, simple circuit structure, low cost, and small volume, which meets the requirements of miniaturization of electrical appliances at the present stage. need.

Description

A DC power supply circuit for computer

technical field

The utility model relates to a computer, in particular to a DC power supply circuit for a computer.

Background technique

A computer, commonly known as a computer, is an electronic computing machine used for high-speed calculations. It can perform numerical calculations, logical calculations, and has storage and memory functions. It is a modern intelligent electronic device that can run according to the program and process massive data automatically and at high speed. Composed of hardware systems and software systems, computers without any software installed are called bare metal. It can be divided into five categories: supercomputers, industrial control computers, network computers, personal computers, and embedded computers. More advanced computers include biological computers, photonic computers, and quantum computers.

The computer needs a stable voltage power supply, and the unstable voltage has a great impact on the service life and safety of the computer. Many existing non-brand computers are designed with a regulated power supply without short-circuit protection for cost considerations. Less security.

Utility model content

The purpose of this utility model is to provide a DC power supply circuit for computers to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A DC power supply circuit for a computer, comprising a resistor R1, a capacitor C1, a NOT gate F1, a transistor VT1, a diode D1 and an inductance L, one end of the inductance L is respectively connected to a power supply VCC, a resistor R3, a resistor R7 and a resistor R8, and the resistor R7 is another One end is connected to the collector of the triode VT1, the base of the triode VT1 is respectively connected to the cathode of the grounding diode D2 and the other end of the resistor R8, the emitter of the triode VT1 is respectively connected to the resistor R6, the cathode of the diode D1 and the output terminal Vo, and the other end of the resistor R6 is respectively connected to the grounding resistor R5 and The input terminal of the NOT gate F4, the output terminal of the NOT gate F4 are respectively connected to the ground capacitor C2 and the resistor R4, and the other end of the resistor R4 is respectively connected to the capacitor C1, the output terminal of the NOT gate F2, the other end of the resistor R3 and the input terminal of the NOT gate F3, and the other end of the capacitor C1 Respectively connect the resistor R1 and the input terminal of the NOT gate F1, the output terminal of the NOT gate F1 is respectively connected to the other end of the resistor R1, the other end of the resistor R2 and the input terminal of the NOT gate F2, and the output terminal of the NOT gate F3 is respectively connected to the other end of the inductor L and the diode D1 positive electrode.

As a further solution of the present invention: the diode D2 is a Zener diode.

As a further solution of the utility model: the voltage of the power supply VCC is 12V.

Compared with the prior art, the beneficial effect of the utility model is: the DC power supply circuit for the computer of the utility model is controlled by a gate circuit and a triode, not only has a voltage stabilizing function, but also has a short-circuit protection function, high safety, and a circuit structure It is simple, low in cost, and small in size, and meets the demand for miniaturization of electrical appliances at the present stage.

Description of drawings

Figure 1 is a circuit diagram of a DC power supply circuit for a computer.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, in the embodiment of the present utility model, a kind of DC power supply circuit for computer comprises resistance R1, capacitor C1, NOT gate F1, triode VT1, diode D1 and inductance L, and one end of said inductance L is respectively connected to power supply VCC, Resistor R3, resistor R7 and resistor R8, the other end of resistor R7 is connected to the collector of triode VT1, the base of triode VT1 is respectively connected to the cathode of grounding diode D2 and the other end of resistor R8, and the emitter of triode VT1 is respectively connected to resistor R6, the cathode of diode D1 and the output terminal Vo, the other end of the resistor R6 is connected to the grounding resistor R5 and the input terminal of the NOT gate F4, the output terminal of the NOT gate F4 is respectively connected to the grounding capacitor C2 and the resistor R4, and the other end of the resistor R4 is respectively connected to the capacitor C1, the output terminal of the NOT gate F2, and the resistor R3 One end is connected to the input terminal of the NOT gate F3, the other end of the capacitor C1 is connected to the resistor R1 and the input terminal of the NOT gate F1, and the output terminal of the NOT gate F1 is respectively connected to the other end of the resistor R1, the other end of the resistor R2 and the input terminal of the NOT gate F2. The output terminal of F3 is respectively connected to the other end of the inductor L and the anode of the diode D1; the diode D2 is a Zener diode; the voltage of the power supply VCC is 12V.

Please refer to Figure 1. The NOT gates F1 and F2 and their peripheral components form an oscillating circuit. The output of the oscillating circuit drives the NOT gate F3. The inductor L and the diode D1 form an enhanced converter circuit. When the output of the NOT gate F3 is low, the inductor L The lower part is grounded, and the current flowing through the inductance L increases. When the output of the invertor F3 is high, the energy stored in L causes the anode voltage of the diode D1 to rise, and D1 is turned on, and a stable voltage is output from the output terminal Vo. The adjustment function of the NOT gate F4 is to use the feedback resistors R5 and R6 to monitor the voltage of the output terminal Vo. When the voltage at the output terminal Vo rises, the input of F4 will exceed the threshold of F4, and the output of F4 will turn to low level, so that The level at the output terminal of F4 is 0, thereby reducing the voltage amplitude output by the oscillating circuit, so that the voltage at the output terminal Vo remains stable; when the voltage at the output terminal Vo drops, the non-gate F4 outputs a high level, so that the oscillating circuit oscillates Strengthen to further keep the voltage at the output terminal Vo stable; the triode VT1 and its peripheral electronic components form a short-circuit protection circuit. When a short-circuit fault occurs at the output terminal Vo, the triode VT1 is saturated and turned on, and the current passing through it is limited by the resistor R7 , thereby protecting the safety of the load (not shown in Figure 1) at the output terminal Vo; when the short-circuit fault is eliminated, the input terminal of the NOT gate F4 gets a low level, so that the circuit returns to a stable state; the base of the transistor VT1 The voltage is given a level by the Zener diode D2 in advance, so that when the whole circuit enters the normal working state, VT1 can be kept off.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (1)

1. A DC power supply circuit for a computer, comprising resistor R1, capacitor C1, NOT gate F1, triode VT1, diode D1 and inductor L, characterized in that one end of the inductor L is connected to power supply VCC, resistor R3, resistor R7 and Resistor R8 and the other end of resistor R7 are connected to the collector of triode VT1, the base of triode VT1 is respectively connected to the negative pole of grounding diode D2 and the other end of resistor R8, the emitter of triode VT1 is respectively connected to resistor R6, the negative pole of diode D1 and the output terminal Vo, and the other end of resistor R6 Connect the grounding resistor R5 and the input terminal of the NOT gate F4 respectively, the output terminal of the NOT gate F4 is respectively connected to the grounding capacitor C2 and the resistor R4, and the other end of the resistor R4 is respectively connected to the capacitor C1, the output terminal of the NOT gate F2, the other end of the resistor R3 and the input of the NOT gate F3 terminal, the other end of the capacitor C1 is connected to the resistor R1 and the input terminal of the NOT gate F1 respectively, the output terminal of the NOT gate F1 is respectively connected to the other end of the resistor R1, the other end of the resistor R2 and the input terminal of the NOT gate F2, and the output terminal of the NOT gate F3 is respectively connected to the inductor The other end of L and the positive pole of diode D1.