CN108039828A - Capacitance-resistance full-wave rectifying circuit - Google Patents

Capacitance-resistance full-wave rectifying circuit Download PDF

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Publication number
CN108039828A
CN108039828A CN201711445547.2A CN201711445547A CN108039828A CN 108039828 A CN108039828 A CN 108039828A CN 201711445547 A CN201711445547 A CN 201711445547A CN 108039828 A CN108039828 A CN 108039828A
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capacitance
diode
resistance
full
anode
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马巧娟
孙林忠
傅亮
胡萌
黄亨
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Zhejiang Hengye Electronic Co Ltd
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Zhejiang Hengye Electronic Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/08—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC
    • H02M5/04—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters
    • H02M5/06—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using impedances
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/06—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H02M7/066—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode particular circuits having a special characteristic
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0048—Circuits or arrangements for reducing losses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

阻容全波整流电路，包括依次连接的阻容降压电路、全波整流电路、稳压滤波电路，所述全波整流电路包括二极管D4、电容EC1、二极管D7、二极管D8和三极管Q3，所述二极管D4正极、所述电容EC1负极之间的节点与所述三极管Q3发射极连接，所述电容EC1的正极与二极管D7正极、二极管D8负极之间的节点连接，所述三极管Q3基极与二极管D4负极之间的节点接火线L，所述三极管Q3集电极、二极管D8正极之间的节点接地，所述二极管D7负极接输出端HVCC。采用本阻容全波整流电路提高了电源的输出能力、电源输出电压的稳定性、电源的安全性和可靠性，有效降低了使用该电路产品的成本，提高了产品质量和竞争力。

The resistance-capacitance full-wave rectification circuit includes a resistance-capacitance step-down circuit, a full-wave rectification circuit, and a voltage stabilizing filter circuit connected in sequence. The full-wave rectification circuit includes a diode D4, a capacitor EC1, a diode D7, a diode D8, and a transistor Q3. The node between the anode of the diode D4 and the cathode of the capacitor EC1 is connected to the emitter of the triode Q3, the anode of the capacitor EC1 is connected to the node between the anode of the diode D7 and the cathode of the diode D8, and the base of the transistor Q3 is connected to the cathode of the diode D8. The node between the cathodes of the diode D4 is connected to the live wire L, the node between the collector of the triode Q3 and the anode of the diode D8 is grounded, and the cathode of the diode D7 is connected to the output terminal HVCC. The use of the resistance-capacity full-wave rectification circuit improves the output capability of the power supply, the stability of the output voltage of the power supply, the safety and reliability of the power supply, effectively reduces the cost of products using the circuit, and improves product quality and competitiveness.

Description

阻容全波整流电路RC full wave rectifier circuit

技术领域technical field

本发明属于电子电路技术领域，具体涉及一种用于单相电子式有功电能表的阻容全波整流电路。The invention belongs to the technical field of electronic circuits, and in particular relates to a resistance-capacity full-wave rectification circuit for a single-phase electronic active energy meter.

背景技术Background technique

单相电子式有功电能表，适应于计量额定频率为50hz60hz的单相交流有功电能的电表，因具有功耗低、负载范围宽、无机械磨损的优点，被广泛使用。在这种电能表中都存在这电源电路，而电源电路中基本都需要进行降压处理，而现有的降压处理往往是采用线性变压器和阻容两种降压方式。电能表在制造使用过程中，尤其是出口外贸型的单相电子式有功电能表，因出厂价格低，如采用价格较高的线性变压器，就会增加单个电能表的制造成本，因而制造时普遍选择采用阻容降压的方式来设计电能表电源电路。Single-phase electronic active energy meters are suitable for measuring single-phase AC active energy with a rated frequency of 50hz60hz. They are widely used because of their advantages of low power consumption, wide load range, and no mechanical wear. This power supply circuit exists in this kind of electric energy meter, and the step-down treatment is basically required in the power supply circuit, and the existing step-down treatment often adopts two kinds of step-down methods, a linear transformer and a resistance-capacitance method. During the manufacture and use of electric energy meters, especially single-phase electronic active electric energy meters for export, due to the low ex-factory price, if a linear transformer with a higher price is used, the manufacturing cost of a single electric energy meter will be increased, so it is common to manufacture Choose to use the resistance-capacitance step-down method to design the power supply circuit of the electric energy meter.

在电能表的电源电路采用阻容降压的方式时，通常采用以下两种方式：半波整流方式和全波整流方式，其对应参见图1及图2，图1利用电源输入通过电容C1、电阻R1、稳压二极管VD1、二极管VD2、电容C2形成的电路输出VOUT，但这种半波输出方式存在一个缺点:电路的阻容降压输出能力有限；而图2中电源输入通过电容C1、电阻R1、二极管VD1-VD4、稳压二极管VD5及电容C2形成的电路输出输出VOUT，这种全波输出方式同样也存在缺点:电路的阻容降压上稳定性和安全性都比较差。When the power supply circuit of the watt-hour meter adopts the resistance-capacitance step-down method, the following two methods are usually used: half-wave rectification and full-wave rectification, and their corresponding references are shown in Figure 1 and Figure 2. Figure 1 uses the power input through the capacitor C1, The circuit formed by resistor R1, Zener diode VD1, diode VD2, and capacitor C2 outputs VOUT, but this half-wave output mode has a shortcoming: the circuit’s resistance-capacitance step-down output capability is limited; while the power input in Figure 2 passes through capacitor C1, The circuit formed by resistor R1, diodes VD1-VD4, Zener diode VD5 and capacitor C2 outputs VOUT. This full-wave output mode also has disadvantages: the stability and safety of the circuit's resistance-capacitance step-down are relatively poor.

因此，需要研究一种更加稳定及安全可靠的电路。Therefore, it is necessary to study a more stable, safe and reliable circuit.

发明内容Contents of the invention

本发明为了解决上述现有技术中存在的缺点和不足，提供一种阻容全波整流电路，能提高电源输出能力、稳定性和安全性，相比于传统整流方式具有更大优势，主要应用于单相电子式电能表的前端电源电路。In order to solve the shortcomings and deficiencies in the above-mentioned prior art, the present invention provides a resistance-capacitance full-wave rectification circuit, which can improve power output capability, stability and safety, and has greater advantages compared with traditional rectification methods. It is used in the front-end power supply circuit of single-phase electronic energy meter.

为了达到上述发明目的，本发明采用以下技术方案：In order to achieve the above object of the invention, the present invention adopts the following technical solutions:

阻容全波整流电路，包括依次连接的阻容降压电路、全波整流电路、稳压滤波电路，所述全波整流电路包括二极管D4、电容EC1、二极管D7、二极管D8和三极管Q3，所述二极管D4正极、所述电容EC1负极之间的节点与所述三极管Q3发射极连接，所述电容EC1的正极与二极管D7正极、二极管D8负极之间的节点连接，所述三极管Q3基极与二极管D4负极之间的节点接火线L，所述三极管Q3集电极、二极管D8正极之间的节点接地，所述二极管D7负极接输出端HVCC。The resistance-capacitance full-wave rectification circuit includes a resistance-capacitance step-down circuit, a full-wave rectification circuit, and a voltage stabilizing filter circuit connected in sequence. The full-wave rectification circuit includes a diode D4, a capacitor EC1, a diode D7, a diode D8, and a transistor Q3. The node between the anode of the diode D4 and the cathode of the capacitor EC1 is connected to the emitter of the triode Q3, the anode of the capacitor EC1 is connected to the node between the anode of the diode D7 and the cathode of the diode D8, and the base of the transistor Q3 is connected to the cathode of the diode D8. The node between the cathodes of the diode D4 is connected to the live line L, the node between the collector of the triode Q3 and the anode of the diode D8 is grounded, and the cathode of the diode D7 is connected to the output terminal HVCC.

进一步，还包括电阻R60，所述电阻R60两端分别与所述三极管Q3基极、所述二极管D4负极连接。Further, a resistor R60 is further included, and both ends of the resistor R60 are respectively connected to the base of the transistor Q3 and the cathode of the diode D4.

进一步，所述电容EC1采用电解电容。Further, the capacitor EC1 is an electrolytic capacitor.

进一步，所述三极管Q3采用LBC817型号。Further, the transistor Q3 adopts the model of LBC817.

更进一步，所述全波整流电路包括二极管D1，所述二极管D1正极、负极分别接火线L与二极管D4负极之间的节点、接电源输出端HVCC与二极管D7负极之间的节点。Furthermore, the full-wave rectification circuit includes a diode D1, the anode and cathode of the diode D1 are respectively connected to the node between the live line L and the cathode of the diode D4, and connected to the node between the output terminal HVCC of the power supply and the cathode of the diode D7.

进一步，所述稳压滤波电路包括电阻R28和稳压二极管D9，所述电阻R28、稳压二极管D9负极之间的节点与所述二极管D1负极连接，所述稳压二极管D9正极接零线N的同时也接地。Further, the voltage stabilizing filter circuit includes a resistor R28 and a voltage stabilizing diode D9, the node between the resistor R28 and the negative pole of the voltage stabilizing diode D9 is connected to the negative pole of the diode D1, and the positive pole of the voltage stabilizing diode D9 is connected to the zero line N while also grounding.

更进一步，还包括电容EC3，所述电容EC3正极接电源输出端HVCC，电容EC3负极接地。Further, a capacitor EC3 is also included, the positive pole of the capacitor EC3 is connected to the output terminal HVCC of the power supply, and the negative pole of the capacitor EC3 is grounded.

进一步，所述阻容降压电路包括电容C17、电阻R21，所述电容C17一端接电源火线L，所述电容C17另一端、电阻R21与二极管D1正极依次连接。Further, the RC step-down circuit includes a capacitor C17 and a resistor R21, one end of the capacitor C17 is connected to the live line L of the power supply, and the other end of the capacitor C17, the resistor R21 is connected to the anode of the diode D1 in sequence.

更进一步，所述电容C17采用0.22μF或0.33μF的安规电容，和/或，所述电阻R21采用限流功率电阻。Furthermore, the capacitor C17 is a safety capacitor of 0.22 μF or 0.33 μF, and/or the resistor R21 is a current-limiting power resistor.

进一步，还包括电源保护电路，所述电源保护电路采用压敏电阻RV1，所述压敏电阻RV1两端分别与输入电源的火线L、零线N连接。Further, it also includes a power supply protection circuit, the power supply protection circuit adopts a varistor RV1, and the two ends of the varistor RV1 are respectively connected to the live line L and the neutral line N of the input power supply.

本发明与现有技术相比，有益效果是：The present invention compares with prior art, beneficial effect is:

1.相比于传统半波整流电路，本发明电路的电源输出能力强；1. Compared with the traditional half-wave rectification circuit, the power output capability of the circuit of the present invention is strong;

2.相比于传统全波整流电路，本发明电路通过电容充放电补全负半轴波形的方法，其稳定性和安全性更高；2. Compared with the traditional full-wave rectification circuit, the circuit of the present invention complements the negative half-axis waveform by charging and discharging the capacitor, which has higher stability and safety;

3.电源输出能力强，针对后端需要相同输出能力时，本发明电路比比半波整流电路消耗的能量小，视在功耗比半波整流电路小；3. The power output capability is strong. When the same output capability is required for the back end, the circuit of the present invention consumes less energy than the half-wave rectification circuit, and the apparent power consumption is smaller than the half-wave rectification circuit;

4.本发明电路结构简单，具有防雷、浪涌、谐波、高压保护及降压稳压功能，应用于单相电子式电能表前端电源电路安全可靠，实用性大；4. The circuit structure of the present invention is simple, and has the functions of lightning protection, surge, harmonic, high-voltage protection and step-down voltage stabilization, and is safe and reliable when applied to the front-end power supply circuit of a single-phase electronic electric energy meter, and has great practicability;

5.本发明提高了电源的输出能力、电源输出电压的稳定性、电源的安全性和可靠性，有效降低了使用该电路产品的成本，提高了产品质量和竞争力。5. The present invention improves the output capability of the power supply, the stability of the output voltage of the power supply, the safety and reliability of the power supply, effectively reduces the cost of using the circuit product, and improves the product quality and competitiveness.

附图说明Description of drawings

图1是现有技术中的半波整流方式的电源电路；Fig. 1 is the power supply circuit of the half-wave rectification mode in the prior art;

图2是现有技术中的全波整流方式的电源电路；Fig. 2 is the power supply circuit of the full-wave rectification mode in the prior art;

图3是本发明的阻容全波整流电路图；Fig. 3 is the RC full-wave rectification circuit diagram of the present invention;

图4是本发明的半波整流波形图；Fig. 4 is a half-wave rectification waveform diagram of the present invention;

图5是本发明的全波整流波形图；Fig. 5 is a full-wave rectification waveform diagram of the present invention;

图6是本发明的实现原理框图；Fig. 6 is the realization principle block diagram of the present invention;

图7是现有的半波整流电路图。Fig. 7 is a circuit diagram of an existing half-wave rectifier.

具体实施方式Detailed ways

下面通过具体实施例对本发明的技术方案作进一步描述说明。The technical solutions of the present invention will be further described and illustrated through specific examples below.

如图3所示，本实施例公开了一种阻容全波整流电路，电源火线L、零线N之间接压敏电阻RV1，电源火线L、电容C17、电阻R21、二极管D1、电阻R28、输出端HVCC依次连接，电阻R21、二极管D1之间的节点与二极管D4负极、电阻R60连接，二极管D4正极、电容EC1负极之间的节点与三极管Q3发射极连接，电阻R60与三极管Q3基极连接，三极管Q3集电极、二极管D8正极、稳压二极管D9正极同时接地与火线N，稳压二极管D9正极与电容EC3负极连接，稳压二极管D9负极接电阻R28，电容EC3正极接输出端HVCC，二极管D7正极与二极管负极、电阻R28之间的节点连接。As shown in Figure 3, this embodiment discloses a resistance-capacitance full-wave rectification circuit, a varistor RV1 is connected between the live wire L of the power supply and the neutral wire N, the live wire L of the power supply, the capacitor C17, the resistor R21, the diode D1, the resistor R28, The output terminal HVCC is connected sequentially, the node between the resistor R21 and the diode D1 is connected to the cathode of the diode D4 and the resistor R60, the node between the anode of the diode D4 and the cathode of the capacitor EC1 is connected to the emitter of the transistor Q3, and the resistor R60 is connected to the base of the transistor Q3 , the collector of the transistor Q3, the positive pole of the diode D8, the positive pole of the Zener diode D9 are connected to the live wire N at the same time, the positive pole of the Zener diode D9 is connected to the negative pole of the capacitor EC3, the negative pole of the Zener diode D9 is connected to the resistor R28, the positive pole of the capacitor EC3 is connected to the output terminal HVCC, and the diode The node between the anode of D7 and the cathode of the diode and resistor R28 is connected.

结合图6原理图可知，本实施例的阻容全波整流电路主要由电源保护电路、阻容降压电路、全波整流电路和稳压滤波电路这几个功能电路串联而成。电容EC1、电容EC3采用电解电容,。阻容降压电路中,降压用的电容C17选用0.22μF或0.33μF的安规电容，电阻R21采用限流功率电阻。It can be seen from the schematic diagram in FIG. 6 that the RC full-wave rectification circuit of this embodiment is mainly composed of several functional circuits connected in series: a power supply protection circuit, a RC step-down circuit, a full-wave rectification circuit and a voltage stabilizing filter circuit. Capacitor EC1 and capacitor EC3 are electrolytic capacitors. In the resistance-capacitance step-down circuit, the capacitor C17 used for step-down is a 0.22μF or 0.33μF safety capacitor, and the resistor R21 is a current-limiting power resistor.

针对本实施例的阻容全波整流电路，其原理为：当交流电处于第一个正半轴时，通过D1整流成不连续的半波，输出到后端负载；当交流电处于第一个负半轴时，Q3截止，通过D8给电容充电，过D4后形成回路；当交流电处于下一个周期的负半轴时，电容EC1通过D7放电，同时进行充电，开始补全半波整流的负半轴波形，其形成的半波整流波形见图4；随着电容放电，电压逐渐降低，补全电压呈曲线下降，其补全波形图见图5所示。For the RC full-wave rectification circuit of this embodiment, its principle is: when the alternating current is in the first positive half-axis, it is rectified into a discontinuous half-wave by D1 and output to the back-end load; when the alternating current is in the first negative half-axis When half-axis, Q3 cuts off, charges the capacitor through D8, and forms a loop after passing through D4; when the alternating current is in the negative half-axis of the next cycle, capacitor EC1 discharges through D7 and charges at the same time, and starts to complete the negative half of the half-wave rectification Shaft waveform, the half-wave rectification waveform formed by it is shown in Figure 4; as the capacitor is discharged, the voltage gradually decreases, and the complementary voltage decreases in a curve, and the complementary waveform is shown in Figure 5.

为了使得本实施例的效果体现的更加清楚明白，本实施例采用图7所述的一种半波整流电路图作为比较，根据图7的半波整流电路图，在实际测量后得到的视在功耗为3.69VA，而采用本实施例即图3所示的全波阻容整流电路，补全波形的电路实际测得的视在功耗为3.30VA；将安规电容(即图7中的C19和图3中的C17)换成0.33uf后，图7的半波测得视在功耗为：5.18VA；图3的补全波形的电路测得为：4.89VA。明显，采用本实施例的电路其测得的视在功耗低于图7的半波的视在功耗，。In order to make the effect of this embodiment more clear, this embodiment uses a half-wave rectification circuit diagram shown in Figure 7 as a comparison. According to the half-wave rectification circuit diagram in Figure 7, the apparent power consumption obtained after actual measurement It is 3.69VA, and adopt the full-wave resistance-capacitance rectification circuit shown in Fig. 3 in this embodiment, the actual measured apparent power consumption of the circuit of the complementary waveform is 3.30VA; After replacing C17 in Figure 3 with 0.33uf, the measured apparent power consumption of the half-wave in Figure 7 is: 5.18VA; the circuit of the complementary waveform in Figure 3 is measured as: 4.89VA. Obviously, the apparent power consumption measured by the circuit of this embodiment is lower than the half-wave apparent power consumption shown in FIG. 7 .

本实施例的输出能力的计算：The calculation of the output capacity of the present embodiment:

输出能力为半波整流输出能力+补全波形输出能力，其中半波整流输出能力为：The output capability is half-wave rectification output capability + complementary waveform output capability, where the half-wave rectification output capability is:

I(AV)＝0.44*V/Zc＝0.44*220*2*Pi*f*CI(AV)＝0.44*V/Zc＝0.44*220*2*Pi*f*C

＝0.44*220*2*3.14*50*C＝30395C=0.44*220*2*3.14*50*C＝30395C

＝30395*0.00000022≈0.0067A＝6.7mA=30395*0.00000022≈0.0067A＝6.7mA

补全波形用积分算面积太复杂，这里近似看成电容放电为线性下降，面积是三角形面积，输出能力是半波整流的一半为3.35mA。It is too complicated to calculate the area by integral of the complementary waveform. Here, it is approximated that the discharge of the capacitor is a linear decrease, the area is a triangular area, and the output capacity is half of the half-wave rectification, which is 3.35mA.

所以总的输出能力为10.05mA。大约是半波整流的1.5倍。本实施例的电源输出能力相对于半波整流电路的输出能力更强。So the total output capability is 10.05mA. It is about 1.5 times that of half-wave rectification. The output capability of the power supply in this embodiment is stronger than that of the half-wave rectification circuit.

本实施例中元器件的型号类型选择：The model type selection of components and parts in this embodiment:

1.三极管选型：放电时集电极-发射极电压最大为电容两端电压，由于后端稳压管的存在，电压为15V，所以集电极-发射极最大电压为15V，最大电流为阻容降压能提供的最大电流为10.05mA.LBC817完全足够。1. Triode selection: the maximum collector-emitter voltage is the voltage at both ends of the capacitor during discharge. Due to the existence of the back-end regulator, the voltage is 15V, so the maximum collector-emitter voltage is 15V, and the maximum current is the resistance-capacitance The maximum current that the buck can provide is 10.05mA.LBC817 is completely sufficient.

2、电解电容选型：电解电容起到充放电作用，需要充电半个周期，半个周期时间为0.01s，充电电流为3.35mA，Q＝It＝0.0335库伦，C＝Q/U＝0.0335/15＝0.00223F＝220uf。2. Type selection of electrolytic capacitors: electrolytic capacitors play the role of charging and discharging, and need to be charged for half a cycle. 15 = 0.00223F = 220uf.

以上为本发明的优选实施方式，并不限定本发明的保护范围，对于本领域技术人员根据本发明的设计思路做出的变形及改进，都应当视为本发明的保护范围之内。The above are preferred embodiments of the present invention, and do not limit the scope of protection of the present invention. All modifications and improvements made by those skilled in the art according to the design concept of the present invention should be considered within the scope of protection of the present invention.

Claims (10)

1. capacitance-resistance full-wave rectifying circuit, it is characterised in that including sequentially connected capacitance-resistance voltage reduction circuit, full-wave rectifying circuit, steady Press filtration wave circuit, the full-wave rectifying circuit include diode D4, capacitance EC1, diode D7, diode D8 and triode Q3, Node between the diode D4 cathodes, the capacitance EC1 anode is connected with the triode Q3 emitters, the capacitance Node connection between the cathode and diode D7 cathodes, diode D8 anode of EC1, the triode Q3 base stages and diode D4 Node between anode is started to exchange fire line L, the node ground connection between the triode Q3 collectors, diode D8 cathodes, two pole Pipe D7 anode meet output terminal HVCC.
2. capacitance-resistance full-wave rectifying circuit according to claim 1, it is characterised in that further include resistance R60, the resistance R60 both ends are connected with the triode Q3 base stages, the diode D4 anode respectively.
3. capacitance-resistance full-wave rectifying circuit according to claim 1 or 2, it is characterised in that the capacitance EC1 is using electrolysis electricity Hold.
4. capacitance-resistance full-wave rectifying circuit according to claim 1 or 2, it is characterised in that the triode Q3 is used LBC817 models.
5. capacitance-resistance full-wave rectifying circuit according to claim 1 or 2, it is characterised in that the full-wave rectifying circuit includes Diode D1, the diode D1 cathodes, anode start to exchange fire respectively node between line L and diode D4 anode, connect power supply output Hold the node between HVCC and diode D7 anode.
6. capacitance-resistance full-wave rectifying circuit according to claim 1 or 2, it is characterised in that the filter circuit of pressure-stabilizing includes Resistance R28 and zener diode D9, the node between the resistance R28, zener diode D9 anode are born with the diode D1 Pole connects, and the zener diode D9 cathodes are also grounded while meeting zero curve N.
7. capacitance-resistance full-wave rectifying circuit according to claim 6, it is characterised in that further include capacitance EC3, the capacitance EC3 cathodes connect power output end HVCC, capacitance EC3 anode ground connection.
8. capacitance-resistance full-wave rectifying circuit according to claim 1 or 2, it is characterised in that the capacitance-resistance voltage reduction circuit includes Capacitance C17, resistance R21, the capacitance C17 mono- terminate power firestreak L, the capacitance C17 other ends, resistance R21 and the diode D1 cathodes are sequentially connected.
9. capacitance-resistance full-wave rectifying circuit according to claim 8, it is characterised in that the capacitance C17 using 0.22 μ F or The safety capacitance of 0.33 μ F, and/or, the resistance R21 uses current-limited power resistance.
10. capacitance-resistance full-wave rectifying circuit according to claim 1 or 2, it is characterised in that power protecting circuit is further included, The power protecting circuit uses varistor RV1, varistor RV1 both ends firewire L, the zero curve with input power respectively N connections.
CN201711445547.2A 2017-12-27 2017-12-27 Capacitance-resistance full-wave rectifying circuit Pending CN108039828A (en)

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CN112332659A (en) * 2020-09-18 2021-02-05 杭州小电科技股份有限公司 Voltage stabilizing system and resistance-capacitance power supply
CN112421969A (en) * 2020-06-22 2021-02-26 杭州炬华科技股份有限公司 Enhanced resistance-capacitance power circuit
CN114675204A (en) * 2022-02-25 2022-06-28 王建军 Power supply voltage loss recorder

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CN204304808U (en) * 2014-12-26 2015-04-29 国网甘肃省电力公司 A kind of capacitance-resistance voltage reduction circuit
CN207782677U (en) * 2017-12-27 2018-08-28 浙江恒业电子有限公司 Capacitance-resistance full-wave rectifying circuit

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Publication number Priority date Publication date Assignee Title
CN201256356Y (en) * 2008-08-09 2009-06-10 陈小尘 Novel step-down power supply circuit
CN201956915U (en) * 2011-03-16 2011-08-31 无锡和晶信息技术有限公司 Circuit for reducing standby power consumption of RC (Resistance-Capacitance) reduction voltage power circuit
CN202135069U (en) * 2011-07-06 2012-02-01 深圳威胜科技有限公司 Resistance-capacitance voltage reduction power supply circuit
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CN112421969A (en) * 2020-06-22 2021-02-26 杭州炬华科技股份有限公司 Enhanced resistance-capacitance power circuit
CN112332659A (en) * 2020-09-18 2021-02-05 杭州小电科技股份有限公司 Voltage stabilizing system and resistance-capacitance power supply
CN114675204A (en) * 2022-02-25 2022-06-28 王建军 Power supply voltage loss recorder

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