CN107861600A - A kind of computer display power-supply controller of electric - Google Patents
A kind of computer display power-supply controller of electric Download PDFInfo
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- CN107861600A CN107861600A CN201711163111.4A CN201711163111A CN107861600A CN 107861600 A CN107861600 A CN 107861600A CN 201711163111 A CN201711163111 A CN 201711163111A CN 107861600 A CN107861600 A CN 107861600A
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- 239000003990 capacitor Substances 0.000 claims abstract description 31
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims description 9
- 230000001629 suppression Effects 0.000 claims description 7
- 230000001052 transient effect Effects 0.000 claims description 7
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
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Abstract
本发明公开了一种计算机显示器电源控制器，包括稳压电路和电压保护电路，所述稳压电路输出直流电压VCC，所述电压保护电路包括芯片IC1、三极管V1、喇叭B和蓄电池E，所述三极管V1的发射极连接电阻R1、三极管V2的发射极和直流电压VCC，电阻R1的另一端连接电容C1和三极管V1的基极。本发明计算机显示器电源控制器电路结构简单、元器件少，不仅能够提供稳定的直流电压，而且还设置了短路保护模块，同时电路还增加备用电源和停电报警模块，防止断电造成的影响，因此具有功能多样、使用方便和控制精准的优点。
The invention discloses a computer display power controller, which includes a voltage stabilizing circuit and a voltage protection circuit, the voltage stabilizing circuit outputs a DC voltage VCC, and the voltage protecting circuit includes a chip IC1, a triode V1, a speaker B and a storage battery E. The emitter of the transistor V1 is connected to the resistor R1, the emitter of the transistor V2 and the DC voltage VCC, and the other end of the resistor R1 is connected to the capacitor C1 and the base of the transistor V1. The present invention computer display power supply controller circuit structure is simple, and components and parts are few, can not only provide stable DC voltage, but also be provided with short-circuit protection module, simultaneously circuit also adds standby power supply and power failure alarm module, prevents the influence that power failure causes, therefore It has the advantages of various functions, convenient use and precise control.
Description
技术领域technical field
本发明涉及一种显示器电源，具体是一种计算机显示器电源控制器。The invention relates to a display power supply, in particular to a computer display power supply controller.
背景技术Background technique
计算机是日常生活中常用的办公和娱乐工具，能够极大的方便人们的工作并且给人们的业余生活带来极大的乐趣，计算机分为主机和显示器，一般情况而言，显示器和主机为分开供电的方式，现有的计算机显示器大多采用液晶显示屏，现有技术中对计算机显示器的供电大多较为粗糙，仅采用变压器进行降压后直接供电，其电压的稳定性较差，间接的影响到显示器的使用寿命。The computer is a commonly used office and entertainment tool in daily life, which can greatly facilitate people's work and bring great fun to people's spare time. The computer is divided into a host and a monitor. Generally speaking, the monitor and the host are separated. The way of power supply, most of the existing computer monitors use liquid crystal display screens, the power supply to computer monitors in the prior art is mostly relatively rough, and only the transformer is used to step down the voltage and then directly supply power, the voltage stability is poor, which indirectly affects the The lifespan of the display.
发明内容Contents of the invention
本发明的目的在于提供一种计算机显示器电源控制器，以解决上述背景技术中提出的问题。The purpose of the present invention is to provide a computer monitor power controller to solve the problems raised in the above-mentioned background technology.
为实现上述目的，本发明提供如下技术方案：To achieve the above object, the present invention provides the following technical solutions:
一种计算机显示器电源控制器，包括稳压电路和电压保护电路，所述稳压电路输出直流电压VCC，所述电压保护电路包括芯片IC1、三极管V1、喇叭B和蓄电池E，所述三极管V1的发射极连接电阻R1、三极管V2的发射极和直流电压VCC，电阻R1的另一端连接电容C1和三极管V1的基极，电容C1的另一端连接电容C2、电容C3、蓄电池E的负极、喇叭B、显示器A和芯片IC1的引脚2，三极管V2的基极连接电阻R2，电阻R2的另一端连接三极管V3的集电极，三极管V1的集电极连接三极管V3的基极和电阻R3，电阻R3的另一端连接电容C2的另一端、三极管V3的发射极、芯片IC1的引脚3、二极管D1的阳极、二极管D2的阳极和电阻R4，二极管D2的阴极连接显示器A的另一端和蓄电池E的正极，电阻R4的另一端连接三极管V4的基极，二极管D1的阴极连接三极管V4的发射极和电容C3的另一端，三极管V4的集电极连接喇叭B的另一端。A kind of computer display power supply controller, comprises voltage stabilizing circuit and voltage protection circuit, and described voltage stabilizing circuit outputs DC voltage VCC, and described voltage protection circuit comprises chip IC1, triode V1, speaker B and accumulator E, the power of described triode V1 The emitter is connected to the resistor R1, the emitter of the transistor V2 and the DC voltage VCC, the other end of the resistor R1 is connected to the capacitor C1 and the base of the transistor V1, the other end of the capacitor C1 is connected to the capacitor C2, the capacitor C3, the negative pole of the battery E, and the speaker B , Display A and pin 2 of the chip IC1, the base of the transistor V2 is connected to the resistor R2, the other end of the resistor R2 is connected to the collector of the transistor V3, the collector of the transistor V1 is connected to the base of the transistor V3 and the resistor R3, the resistor R3 The other end is connected to the other end of the capacitor C2, the emitter of the transistor V3, the pin 3 of the chip IC1, the anode of the diode D1, the anode of the diode D2 and the resistor R4, and the cathode of the diode D2 is connected to the other end of the display A and the positive electrode of the storage battery E , the other end of the resistor R4 is connected to the base of the triode V4, the cathode of the diode D1 is connected to the emitter of the triode V4 and the other end of the capacitor C3, and the collector of the triode V4 is connected to the other end of the speaker B.
作为本发明的优选方案：所述稳压电路包括降压器变压器W、瞬态电压抑制二极管D8、整流电路、滤波电容C4和稳压芯片IC1，所述整流电路包括二极管D3-D6，降压器变压器W的初级绕组N1的两端连接220V交流电，瞬态电压抑制二极管D8并联连接在降压器变压器W和220V交流电之间，降压器变压器W的次级绕组N2的一端连接二极管D5的阳极和二极管D6的阳极，降压器变压器W的次级绕组N2的另一端连接二极管D3的阳极和二极管D4的阳极，二极管D3的阴极连接二极管D5的阴极、滤波电容C4、稳压二极管D7的阴极和稳压芯片IC2的引脚1，稳压芯片IC2的引脚2分别连接滤波电容C4的另一端、稳压二极管D7的另一端、二极管D6的阳极和二极管D4的阳极，稳压芯片IC2的引脚3输出直流电压VCC。As a preferred solution of the present invention: the voltage stabilizing circuit includes a step-down transformer W, a transient voltage suppression diode D8, a rectifying circuit, a filter capacitor C4 and a voltage stabilizing chip IC1, and the rectifying circuit includes diodes D3-D6, step-down The two ends of the primary winding N1 of the transformer W are connected to 220V AC, the transient voltage suppression diode D8 is connected in parallel between the step-down transformer W and the 220V AC, and one end of the secondary winding N2 of the step-down transformer W is connected to the diode D5 The anode and the anode of the diode D6, the other end of the secondary winding N2 of the step-down transformer W is connected to the anode of the diode D3 and the anode of the diode D4, and the cathode of the diode D3 is connected to the cathode of the diode D5, the filter capacitor C4, and the voltage regulator diode D7 The cathode and pin 1 of the voltage regulator chip IC2, pin 2 of the voltage regulator chip IC2 are respectively connected to the other end of the filter capacitor C4, the other end of the voltage regulator diode D7, the anode of the diode D6 and the anode of the diode D4, and the voltage regulator chip IC2 Pin 3 outputs a DC voltage VCC.
作为本发明的优选方案：所述芯片IC1的型号为LM7812。As a preferred solution of the present invention: the model of the chip IC1 is LM7812.
作为本发明的优选方案：所述电源VCC是220V交流电通过降压整流后输出的12V脉动直流电。As a preferred solution of the present invention: the power supply VCC is a 12V pulsating direct current output after the 220V alternating current is stepped down and rectified.
作为本发明的优选方案：所述二极管D1和二极管D2的型号均为IN4003。As a preferred solution of the present invention: the models of the diode D1 and the diode D2 are both IN4003.
作为本发明的优选方案：所述三极管V1和三极管V4的型号为9012，三极管V2和三极管V3的型号为9013。As a preferred solution of the present invention: the models of the transistor V1 and the transistor V4 are 9012, and the models of the transistor V2 and the transistor V3 are 9013.
作为本发明的优选方案：所述稳压芯片IC2的型号为LM7812。As a preferred solution of the present invention: the model of the voltage stabilizing chip IC2 is LM7812.
与现有技术相比，本发明的有益效果是：本发明计算机显示器电源控制器电路结构简单、元器件少，不仅能够提供稳定的直流电压，而且还设置了短路保护模块，同时电路还增加备用电源和停电报警模块，防止断电造成的影响，因此具有功能多样、使用方便和控制精准的优点。Compared with the prior art, the beneficial effects of the present invention are: the circuit structure of the computer display power controller of the present invention is simple, the components are few, not only can provide a stable DC voltage, but also set a short-circuit protection module, and the circuit also increases the backup The power supply and power failure alarm module prevent the impact caused by power failure, so it has the advantages of multiple functions, convenient use and precise control.
附图说明Description of drawings
图1为计算机显示器电源控制器的电路图。Figure 1 is a circuit diagram of a computer monitor power controller.
图2为稳压电路的电路图。Figure 2 is a circuit diagram of the voltage regulator circuit.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
请参阅图1-2，一种计算机显示器电源控制器，包括稳压电路和电压保护电路，所述稳压电路输出直流电压VCC，所述电压保护电路包括芯片IC1、三极管V1、喇叭B和蓄电池E，所述三极管V1的发射极连接电阻R1、三极管V2的发射极和直流电压VCC，电阻R1的另一端连接电容C1和三极管V1的基极，电容C1的另一端连接电容C2、电容C3、蓄电池E的负极、喇叭B、显示器A和芯片IC1的引脚2，三极管V2的基极连接电阻R2，电阻R2的另一端连接三极管V3的集电极，三极管V1的集电极连接三极管V3的基极和电阻R3，电阻R3的另一端连接电容C2的另一端、三极管V3的发射极、芯片IC1的引脚3、二极管D1的阳极、二极管D2的阳极和电阻R4，二极管D2的阴极连接显示器A的另一端和蓄电池E的正极，电阻R4的另一端连接三极管V4的基极，二极管D1的阴极连接三极管V4的发射极和电容C3的另一端，三极管V4的集电极连接喇叭B的另一端。Please refer to Figure 1-2, a computer display power controller, including a voltage stabilizing circuit and a voltage protection circuit, the voltage stabilizing circuit outputs a DC voltage VCC, and the voltage protecting circuit includes a chip IC1, a transistor V1, a speaker B and a storage battery E, the emitter of the transistor V1 is connected to the resistor R1, the emitter of the transistor V2 and the DC voltage VCC, the other end of the resistor R1 is connected to the capacitor C1 and the base of the transistor V1, and the other end of the capacitor C1 is connected to the capacitor C2, the capacitor C3, The negative pole of battery E, speaker B, display A and pin 2 of chip IC1, the base of triode V2 is connected to resistor R2, the other end of resistor R2 is connected to the collector of triode V3, the collector of triode V1 is connected to the base of triode V3 And resistor R3, the other end of resistor R3 is connected to the other end of capacitor C2, the emitter of transistor V3, pin 3 of chip IC1, the anode of diode D1, the anode of diode D2 and resistor R4, the cathode of diode D2 is connected to the display A The other end is connected to the positive pole of the battery E, the other end of the resistor R4 is connected to the base of the triode V4, the cathode of the diode D1 is connected to the emitter of the triode V4 and the other end of the capacitor C3, and the collector of the triode V4 is connected to the other end of the speaker B.
作为本发明的优选方案：所述稳压电路包括降压器变压器W、瞬态电压抑制二极管D8、整流电路、滤波电容C4和稳压芯片IC1，所述整流电路包括二极管D3-D6，降压器变压器W的初级绕组N1的两端连接220V交流电，瞬态电压抑制二极管D8并联连接在降压器变压器W和220V交流电之间，降压器变压器W的次级绕组N2的一端连接二极管D5的阳极和二极管D6的阳极，降压器变压器W的次级绕组N2的另一端连接二极管D3的阳极和二极管D4的阳极，二极管D3的阴极连接二极管D5的阴极、滤波电容C4、稳压二极管D7的阴极和稳压芯片IC2的引脚1，稳压芯片IC2的引脚2分别连接滤波电容C4的另一端、稳压二极管D7的另一端、二极管D6的阳极和二极管D4的阳极，稳压芯片IC2的引脚3输出直流电压VCC。As a preferred solution of the present invention: the voltage stabilizing circuit includes a step-down transformer W, a transient voltage suppression diode D8, a rectifying circuit, a filter capacitor C4 and a voltage stabilizing chip IC1, and the rectifying circuit includes diodes D3-D6, step-down The two ends of the primary winding N1 of the transformer W are connected to 220V AC, the transient voltage suppression diode D8 is connected in parallel between the step-down transformer W and the 220V AC, and one end of the secondary winding N2 of the step-down transformer W is connected to the diode D5 The anode and the anode of the diode D6, the other end of the secondary winding N2 of the step-down transformer W is connected to the anode of the diode D3 and the anode of the diode D4, and the cathode of the diode D3 is connected to the cathode of the diode D5, the filter capacitor C4, and the voltage regulator diode D7 The cathode and pin 1 of the voltage regulator chip IC2, pin 2 of the voltage regulator chip IC2 are respectively connected to the other end of the filter capacitor C4, the other end of the voltage regulator diode D7, the anode of the diode D6 and the anode of the diode D4, and the voltage regulator chip IC2 Pin 3 outputs a DC voltage VCC.
芯片IC1的型号为LM7812。电源VCC是220V交流电通过降压整流后输出的12V脉动直流电。二极管D1和二极管D2的型号均为IN4003。三极管V1和三极管V4的型号为9012，三极管V2和三极管V3的型号为9013。稳压芯片IC2的型号为LM7812。The model of chip IC1 is LM7812. The power supply VCC is a 12V pulsating DC output after the 220V AC is stepped down and rectified. The models of diode D1 and diode D2 are both IN4003. The models of the transistor V1 and the transistor V4 are 9012, and the models of the transistor V2 and the transistor V3 are 9013. The model of voltage regulator chip IC2 is LM7812.
本发明的工作原理是：图2为稳压电路的电路图，220V的交流市电经过降压变压器W降压、D3-D5组成的全桥整流电路整流、瞬态电压抑制二极管D8抑制尖峰脉冲电压、滤波电容C4滤波，稳压芯片IC2稳压后输出稳定的12V直流电压VCC，刚通电时，图1中的三极管V2、V3截止，电阻R1上的电流产生压降使V1导通，使输出电流增加。若负载短路，则会引起输出电流过流，则流过电阻R3的电流也增加，电流检测电阻R3上压降增大使V3导通，导致V2趋于饱和，使V1管基-射间电压降低，限制了功率管V1的电流，保护负载不致因过流而损坏，当VCC供电正常时，电容C3和蓄电池E均进行充电，三极管V4的基极通过电阻R4得电而截止，遇到市电断电时，首先蓄电池E给A供电，避免了突然断电造成的影响，同时三极管V4的基极电压消失，电容C3通过三极管V4的发射极放电，三极管V4导通，喇叭B发出报警声，提醒人们已经停电。The working principle of the present invention is: Fig. 2 is the circuit diagram of the voltage stabilizing circuit, the alternating current mains of 220V passes step-down transformer W step-down, the full-bridge rectification circuit rectification that D3-D5 forms, transient voltage suppression diode D8 suppresses spike voltage , filter capacitor C4 filter, the voltage regulator chip IC2 outputs a stable 12V DC voltage VCC after voltage stabilization, when the power is first turned on, the transistors V2 and V3 in Figure 1 are cut off, and the current on the resistor R1 produces a voltage drop to turn V1 on and output The current increases. If the load is short-circuited, it will cause the output current to over-current, and the current flowing through the resistor R3 will also increase, and the voltage drop on the current detection resistor R3 will increase to make V3 turn on, causing V2 to become saturated, and the voltage between the base and emitter of V1 to decrease. , limiting the current of the power tube V1, protecting the load from damage due to over-current, when the VCC power supply is normal, the capacitor C3 and the battery E are both charged, the base of the triode V4 is energized by the resistor R4 and cut off, when it meets the mains When the power is cut off, the battery E supplies power to A at first, avoiding the influence caused by a sudden power failure. At the same time, the base voltage of the triode V4 disappears, the capacitor C3 discharges through the emitter of the triode V4, the triode V4 is turned on, and the speaker B emits an alarm sound. Remind people that there is a power outage.
Claims (6)
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| CN108429934A (en) * | 2018-05-23 | 2018-08-21 | 郑州天点科技有限公司 | A router with anti-power-off function |
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| CN106532630A (en) * | 2016-12-27 | 2017-03-22 | 郑州诚合信息技术有限公司 | Voltage protection circuit of computer display |
| CN206389295U (en) * | 2017-02-07 | 2017-08-08 | 黎德君 | A kind of electric mu balanced circuit of short circuit protective |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429934A (en) * | 2018-05-23 | 2018-08-21 | 郑州天点科技有限公司 | A router with anti-power-off function |
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| CN107861600B (en) | 2020-11-20 |
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