CN107861600B - A computer monitor power controller - Google Patents
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- CN107861600B CN107861600B CN201711163111.4A CN201711163111A CN107861600B CN 107861600 B CN107861600 B CN 107861600B CN 201711163111 A CN201711163111 A CN 201711163111A CN 107861600 B CN107861600 B CN 107861600B
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- 239000003990 capacitor Substances 0.000 claims abstract description 31
- 238000004804 winding Methods 0.000 claims description 9
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- 230000001052 transient effect Effects 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 abstract 2
- 238000011105 stabilization Methods 0.000 abstract 2
- 239000003381 stabilizer Substances 0.000 description 4
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- 230000009286 beneficial effect Effects 0.000 description 1
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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 supply controller, comprising a voltage stabilization circuit and a voltage protection circuit, the voltage stabilization circuit outputs a DC voltage VCC, and the voltage protection circuit includes a chip IC1, a triode V1, a speaker B and a 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 has the advantages of simple circuit structure and few components, which can not only provide stable DC voltage, but also set up a short-circuit protection module. At the same time, the circuit also adds a backup power supply and a power failure alarm module to prevent the influence caused by power failure. It has the advantages of versatility, ease of 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。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. Computers are divided into mainframes and monitors. Generally speaking, monitors and mainframes are separated. In the way of power supply, most of the existing computer monitors use liquid crystal display screens. In the prior art, the power supply to computer monitors is mostly rough. Only transformers are used to reduce voltage and directly supply power. The stability of the voltage is poor, which indirectly affects the power supply. the lifespan of the display.
发明内容SUMMARY 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 display power supply controller to solve the above-mentioned problems in the background art.
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 computer display power supply controller includes a voltage regulator circuit and a voltage protection circuit, the voltage regulator circuit outputs a DC voltage VCC, and the voltage protection circuit includes a chip IC1, a transistor V1, a speaker B and a battery E. 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 base of the capacitor C1 and the transistor V1, the other end of the capacitor C1 is connected to the capacitor C2, the capacitor C3, the negative electrode of the battery E, and the speaker B , Display A and
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IC2，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 stabilizer circuit includes a step-down transformer W, a transient voltage suppression diode D8, a rectifier circuit, a filter capacitor C4 and a voltage stabilizer chip IC2, the rectifier circuit includes diodes D3-D6, and the step-down voltage The two ends of the primary winding N1 of the step-down 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, the cathode of the diode D3 is connected to the cathode of the diode D5, the filter capacitor C4, and the Zener diode D7. The cathode and
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 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 model of the triode V1 and the triode V4 is 9012, and the model of the triode V2 and the triode V3 is 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 regulator 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 as follows: the computer display power supply controller of the present invention has a simple circuit structure and few components, not only can provide a stable DC voltage, but also a short-circuit protection module is provided, and the circuit also increases the backup The power supply and power failure alarm module prevents the impact of 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 supply controller.
图2为稳压电路的电路图。Figure 2 is a circuit diagram of a 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 technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within 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 regulator circuit and a voltage protection circuit, the voltage regulator circuit outputs a DC voltage VCC, and the voltage protection circuit includes a chip IC1, a transistor V1, a speaker B and a 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 base of the capacitor C1 and the transistor V1, 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
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IC2，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 stabilizer circuit includes a step-down transformer W, a transient voltage suppression diode D8, a rectifier circuit, a filter capacitor C4 and a voltage stabilizer chip IC2, the rectifier circuit includes diodes D3-D6, and the step-down voltage The two ends of the primary winding N1 of the step-down 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, the cathode of the diode D3 is connected to the cathode of the diode D5, the filter capacitor C4, and the Zener diode D7. The cathode and
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 the 12V pulsating direct current output after the 220V alternating current is stepped down and rectified. Diode D1 and diode D2 are both IN4003 models. The models of transistors V1 and V4 are 9012, and the models of transistors V2 and V3 are 9013. The model of the voltage regulator 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: Figure 2 is a circuit diagram of a voltage stabilizing circuit, the 220V AC mains is stepped down by a step-down transformer W, rectified by a full-bridge rectifier circuit composed of D3-D5, and a transient voltage suppression diode D8 suppresses the spike voltage , The filter capacitor C4 filters, the voltage regulator IC2 outputs a stable 12V DC voltage VCC after voltage regulation. When the power is just 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, making the output current increases. If the load is short-circuited, it will cause the output current to overcurrent, and the current flowing through the resistor R3 will also increase, and the voltage drop across the current detection resistor R3 will increase to make V3 turn on, causing V2 to saturate, reducing the V1 tube base-to-emitter voltage. , limits the current of the power tube V1, and protects the load from damage due to overcurrent. When the VCC power supply is normal, the capacitor C3 and the battery E are both charged, and the base of the transistor V4 is energized through the resistor R4. When the power is cut off, firstly, battery E supplies power to A, which avoids the influence of sudden power failure. At the same time, the base voltage of transistor V4 disappears, capacitor C3 discharges through the emitter of transistor V4, transistor V4 is turned on, and speaker B emits an alarm sound. Remind people that there has been a power outage.
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| CN104459545A (en) * | 2013-09-13 | 2015-03-25 | 海洋王（东莞）照明科技有限公司 | Control circuit and battery short-circuit test device with the control circuit |
| 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 |
| CN206313426U (en) * | 2016-08-23 | 2017-07-07 | 熊小艳 | A kind of short-circuit protector with warning function |
| CN206389295U (en) * | 2017-02-07 | 2017-08-08 | 黎德君 | A kind of electric mu balanced circuit of short circuit protective |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104459545A (en) * | 2013-09-13 | 2015-03-25 | 海洋王（东莞）照明科技有限公司 | Control circuit and battery short-circuit test device with the control circuit |
| CN206313426U (en) * | 2016-08-23 | 2017-07-07 | 熊小艳 | A kind of short-circuit protector with warning function |
| 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 |
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