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音响电源整流滤波方式新探讨

2017-11-12 21页 doc 225KB 18阅读

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音响电源整流滤波方式新探讨音响电源整流滤波方式新探讨 facilitate decision implementation process step by step. Government offices at all levels in accordance with the notice on further strengthening the supervision work of the municipal government requires, and actively carry out supervision from the fol...
音响电源整流滤波方式新探讨
音响电源整流滤波方式新探讨 facilitate decision implementation process step by step. Government offices at all levels in accordance with the notice on further strengthening the supervision work of the municipal government requires, and actively carry out supervision from the following aspects. One is to focus supervision on the implementation of the major decisions and arrangements of the municipal government, in leadership on the major issues of concern to implement, on the people reflect strongly on the hot and difficult problems to solve. Current, to tightly around implement implementation municipal, and Municipal Government proposed of "three a insisted two promote, five big storming six breakthrough" of guideline and General requirements, focus in foster four industry, and construction four base, and created four brand and farmers increase, and project construction, and enterprise reform, and city construction, and private economic, and building harmony social, aspects grasp supervision, makes we of supervision work and city of General thought tune, and and reform development of pulse synchronization. Second, supervision of the breakthrough in innovation, improved methods. Supervision of method, to by passive type to active type change, by everything to focus breakthrough change, by assault supervising to track supervising change, in full using sent letter supervision, and phone urged reported, and heard reported, basic method of while, more to used field check, and random checks, and 音响电源整流滤波方式新探讨 常规的整流滤波电路,对于单相电路而言,一般地是先经过1个全桥整流, 成为单相直流纹波电压,而后依靠电容来滤波得到直流平波电压。如下图所示 这种常规整流滤波电路,在后级加负载后的情况下,整流电路上表现为接近交 流电压波形的峰值附近有非常集中的高密度高能量电流通过,后级的全时区电 流都在该短时间内得到补充,换句话说,后级的全时区电流被挤在该短时间内 全额补充,后级电容只起到蓄能放电平滑的作用(不能提供有功电流)。表现为 电流幅值的挤高和负载电流波形的频率的挤高。下图是某一电路,电源直流电 压正负各38.6V,滤波电容正负各1000UF,在负载1KHZ正弦波峰值2A,整流后 滤波前串的0.15Ω电阻上测到的电压波形。 digging out things, refine, eliminate, and strive to achieve dynamic information highlighting the timeliness, policy focus on targeted, experience information grasp typical problem emphasizes the tendency of information, freedom of information caught ... "Excellence", and accurate, short, does not speak empty words, cliches. "Fast", is the emphasis on timeliness. Who want government leaders to grasp the important information must be collected quickly reported. Especially urgent important information such as events, in strict accordance with the State Council concerning strengthening the emergency notice of significant reporting requirements, not only in the first period of submission to government events, also tracking developments closely, to submit measures, consequences, treatment and rehabilitation, and so on. Establish a strict responsibility system, of late, fail to hide critical situations, to be held accountable. City and County Government offices and Government departments, we should further perfect duty system, raise the level of response and the ability to respond to emergencies and. Third, to open channels of information. Role of key government information network main channel, building extends to all departments and units, vertical extension to the Township and community information networks, information staff, strengthening the work of information. Finished the basic tasks to be criticized. Did not submit information for a long time the County (district) and sectoral, this year we will take effective measuresfacilitate decision implementation process step by step. Government offices at all levels in accordance with the notice on further strengthening the supervision work of the municipal government requires, and actively carry out supervision from the following aspects. One is to focus supervision on the implementation of the major decisions and arrangements of the municipal government, in leadership on the major issues of concern to implement, on the people reflect strongly on the hot and difficult problems to solve. Current, to tightly around implement implementation municipal, and Municipal Government proposed of "three a insisted two promote, five big storming six breakthrough" of guideline and General requirements, focus in foster four industry, and construction four base, and created four brand and farmers increase, and project construction, and enterprise reform, and city construction, and private economic, and building harmony social, aspects grasp supervision, makes we of supervision work and city of General thought tune, and and reform development of pulse synchronization. Second, supervision of the breakthrough in innovation, improved methods. Supervision of method, to by passive type to active type change, by everything to focus breakthrough change, by assault supervising to track supervising change, in full using sent letter supervision, and phone urged reported, and heard reported, basic method of while, more to used field check, and random checks, and facilitate decision implementation process step by step. Government offices at all levels in accordance with the notice on further strengthening the supervision work of the municipal government requires, and actively carry out supervision from the following aspects. One is to focus supervision on the implementation of the major decisions and arrangements of the municipal government, in leadership on the major issues of concern to implement, on the people reflect strongly on the hot and difficult problems to solve. Current, to tightly around implement implementation municipal, and Municipal Government proposed of "three a insisted two promote, five big storming six breakthrough" of guideline and General requirements, focus in foster four industry, and construction four base, and created four brand and farmers increase, and project construction, and enterprise reform, and city construction, and private economic, and building harmony social, aspects grasp supervision, makes we of supervision work and city of General thought tune, and and reform development of pulse synchronization. Second, supervision of the breakthrough in innovation, improved methods. Supervision of method, to by passive type to active type change, by everything to focus breakthrough change, by assault supervising to track supervising change, in full using sent letter supervision, and phone urged reported, and heard reported, basic method of while, more to used field check, and random checks, and 另外,在该短时电流区外,电源只能依靠电容的储能提供,表现为电压的下降, 这一部分时间的电源的特性呈现为电容型特性,尤其是瞬时大电流脉冲特性非 常差。下图为空载时为45.6V的普通整流滤波直流电压,滤波电容正负各1000UF, 在负载1KHZ正弦波峰值2A的情况下,测得的直流电压波形。 digging out things, refine, eliminate, and strive to achieve dynamic information highlighting the timeliness, policy focus on targeted, experience information grasp typical problem emphasizes the tendency of information, freedom of information caught ... "Excellence", and accurate, short, does not speak empty words, cliches. "Fast", is the emphasis on timeliness. Who want government leaders to grasp the important information must be collected quickly reported. Especially urgent important information such as events, in strict accordance with the State Council concerning strengthening the emergency notice of significant reporting requirements, not only in the first period of submission to government events, also tracking developments closely, to submit measures, consequences, treatment and rehabilitation, and so on. Establish a strict responsibility system, of late, fail to hide critical situations, to be held accountable. City and County Government offices and Government departments, we should further perfect duty system, raise the level of response and the ability to respond to emergencies and. Third, to open channels of information. Role of key government information network main channel, building extends to all departments and units, vertical extension to the Township and community information networks, information staff, strengthening the work of information. Finished the basic tasks to be criticized. Did not submit information for a long time the County (district) and sectoral, this year we will take effective measuresunannounced visits to survey and news exposure, more powerful of measures, reflected supervision work of seriousness, and just sex and authenticity. In supervision process in the, both understand the work of progress situation, and note summary units, and the sector in work practice in the created of success experience; both found work in the exists of problem, and find associate produced problem of reasons; both for grass-roots of specific problem, proposed solution of measures and approach, and station in global of height, for Government perfect decision, and guide work proposed macro views, constantly improve supervision work of level. Third, to put the focal point in the system of supervision on the construction. To implement the responsibility system, establish and improve the implementation of the target responsibility system for everyone to task, pressure and power, all your knowledge and wisdom, to find, to form a Government as the main body, inspection Chambers led sector, caught in all aspects of supervision work. To establish supervision authority. Government offices carry out inspection, was authorized by the Government, on behalf of the Government and responsible to the Government, is an important part of government supervision and Extension, has the right to check and coordinate the right, the right to inform the right to criticism, and advice. Departments at all levels should give support to ensure supervision work smoothly. To implementation report system, on main work progress situation to by quarter submitted; on assigned by facilitate decision implementation process step by step. Government offices at all levels in accordance with the notice on further strengthening the supervision work of the municipal government requires, and actively carry out supervision from the following aspects. One is to focus supervision on the implementation of the major decisions and arrangements of the municipal government, in leadership on the major issues of concern to implement, on the people reflect strongly on the hot and difficult problems to solve. Current, to tightly around implement implementation municipal, and Municipal Government proposed of "three a insisted two promote, five big storming six breakthrough" of guideline and General requirements, focus in foster four industry, and construction four base, and created four brand and farmers increase, and project construction, and enterprise reform, and city construction, and private economic, and building harmony social, aspects grasp supervision, makes we of supervision work and city of General thought tune, and and reform development of pulse synchronization. Second, supervision of the breakthrough in innovation, improved methods. Supervision of method, to by passive type to active type change, by everything to focus breakthrough change, by assault supervising to track supervising change, in full using sent letter supervision, and phone urged reported, and heard reported, basic method of while, more to used field check, and random checks, and 下图为同时变压器输出波形。从原先的空载峰峰值44VX2下跌为38.6VX2。 在音响电源中,不管其后续电路采用了何种降压稳压措施,从电流的通路 角度讲,整个电路的特性都将受到这整流滤波电路特性的瓶颈限制。 现提出一种变形的整流稳压滤波电路,如下图所示。 digging out things, refine, eliminate, and strive to achieve dynamic information highlighting the timeliness, policy focus on targeted, experience information grasp typical problem emphasizes the tendency of information, freedom of information caught ... "Excellence", and accurate, short, does not speak empty words, cliches. "Fast", is the emphasis on timeliness. Who want government leaders to grasp the important information must be collected quickly reported. Especially urgent important information such as events, in strict accordance with the State Council concerning strengthening the emergency notice of significant reporting requirements, not only in the first period of submission to government events, also tracking developments closely, to submit measures, consequences, treatment and rehabilitation, and so on. Establish a strict responsibility system, of late, fail to hide critical situations, to be held accountable. City and County Government offices and Government departments, we should further perfect duty system, raise the level of response and the ability to respond to emergencies and. Third, to open channels of information. Role of key government information network main channel, building extends to all departments and units, vertical extension to the Township and community information networks, information staff, strengthening the work of information. Finished the basic tasks to be criticized. Did not submit information for a long time the County (district) and sectoral, this year we will take effective measuresfacilitate decision implementation process step by step. Government offices at all levels in accordance with the notice on further strengthening the supervision work of the municipal government requires, and actively carry out supervision from the following aspects. One is to focus supervision on the implementation of the major decisions and arrangements of the municipal government, in leadership on the major issues of concern to implement, on the people reflect strongly on the hot and difficult problems to solve. Current, to tightly around implement implementation municipal, and Municipal Government proposed of "three a insisted two promote, five big storming six breakthrough" of guideline and General requirements, focus in foster four industry, and construction four base, and created four brand and farmers increase, and project construction, and enterprise reform, and city construction, and private economic, and building harmony social, aspects grasp supervision, makes we of supervision work and city of General thought tune, and and reform development of pulse synchronization. Second, supervision of the breakthrough in innovation, improved methods. Supervision of method, to by passive type to active type change, by everything to focus breakthrough change, by assault supervising to track supervising change, in full using sent letter supervision, and phone urged reported, and heard reported, basic method of while, more to used field check, and random checks, and facilitate decision implementation process step by step. Government offices at all levels in accordance with the notice on further strengthening the supervision work of the municipal government requires, and actively carry out supervision from the following aspects. One is to focus supervision on the implementation of the major decisions and arrangements of the municipal government, in leadership on the major issues of concern to implement, on the people reflect strongly on the hot and difficult problems to solve. Current, to tightly around implement implementation municipal, and Municipal Government proposed of "three a insisted two promote, five big storming six breakthrough" of guideline and General requirements, focus in foster four industry, and construction four base, and created four brand and farmers increase, and project construction, and enterprise reform, and city construction, and private economic, and building harmony social, aspects grasp supervision, makes we of supervision work and city of General thought tune, and and reform development of pulse synchronization. Second, supervision of the breakthrough in innovation, improved methods. Supervision of method, to by passive type to active type change, by everything to focus breakthrough change, by assault supervising to track supervising change, in full using sent letter supervision, and phone urged reported, and heard reported, basic method of while, more to used field check, and random checks, and 这里用LM317及其外围器件作为稳压电路部分,实际上也可用其他稳压电 路代替。负电源用LM337及其相应外围器件组成。 digging out things, refine, eliminate, and strive to achieve dynamic information highlighting the timeliness, policy focus on targeted, experience information grasp typical problem emphasizes the tendency of information, freedom of information caught ... "Excellence", and accurate, short, does not speak empty words, cliches. "Fast", is the emphasis on timeliness. Who want government leaders to grasp the important information must be collected quickly reported. Especially urgent important information such as events, in strict accordance with the State Council concerning strengthening the emergency notice of significant reporting requirements, not only in the first period of submission to government events, also tracking developments closely, to submit measures, consequences, treatment and rehabilitation, and so on. Establish a strict responsibility system, of late, fail to hide critical situations, to be held accountable. City and County Government offices and Government departments, we should further perfect duty system, raise the level of response and the ability to respond to emergencies and. Third, to open channels of information. Role of key government information network main channel, building extends to all departments and units, vertical extension to the Township and community information networks, information staff, strengthening the work of information. Finished the basic tasks to be criticized. Did not submit information for a long time the County (district) and sectoral, this year we will take effective measuresunannounced visits to survey and news exposure, more powerful of measures, reflected supervision work of seriousness, and just sex and authenticity. In supervision process in the, both understand the work of progress situation, and note summary units, and the sector in work practice in the created of success experience; both found work in the exists of problem, and find associate produced problem of reasons; both for grass-roots of specific problem, proposed solution of measures and approach, and station in global of height, for Government perfect decision, and guide work proposed macro views, constantly improve supervision work of level. Third, to put the focal point in the system of supervision on the construction. To implement the responsibility system, establish and improve the implementation of the target responsibility system for everyone to task, pressure and power, all your knowledge and wisdom, to find, to form a Government as the main body, inspection Chambers led sector, caught in all aspects of supervision work. To establish supervision authority. Government offices carry out inspection, was authorized by the Government, on behalf of the Government and responsible to the Government, is an important part of government supervision and Extension, has the right to check and coordinate the right, the right to inform the right to criticism, and advice. Departments at all levels should give support to ensure supervision work smoothly. To implementation report system, on main work progress situation to by quarter submitted; on assigned by facilitate decision implementation process step by step. Government offices at all levels in accordance with the notice on further strengthening the supervision work of the municipal government requires, and actively carry out supervision from the following aspects. One is to focus supervision on the implementation of the major decisions and arrangements of the municipal government, in leadership on the major issues of concern to implement, on the people reflect strongly on the hot and difficult problems to solve. Current, to tightly around implement implementation municipal, and Municipal Government proposed of "three a insisted two promote, five big storming six breakthrough" of guideline and General requirements, focus in foster four industry, and construction four base, and created four brand and farmers increase, and project construction, and enterprise reform, and city construction, and private economic, and building harmony social, aspects grasp supervision, makes we of supervision work and city of General thought tune, and and reform development of pulse synchronization. Second, supervision of the breakthrough in innovation, improved methods. Supervision of method, to by passive type to active type change, by everything to focus breakthrough change, by assault supervising to track supervising change, in full using sent letter supervision, and phone urged reported, and heard reported, basic method of while, more to used field check, and random checks, and 整流之后的波形不经滤波电容的峰值保持,而直接进入降压稳压环节,拓 宽变压器的输出时长,以改善上述提到的普通整流滤波电路的缺点。 如果采用三相输出变压器,降压稳压值选在三相6脉波的最低点电压之下, digging out things, refine, eliminate, and strive to achieve dynamic information highlighting the timeliness, policy focus on targeted, experience information grasp typical problem emphasizes the tendency of information, freedom of information caught ... "Excellence", and accurate, short, does not speak empty words, cliches. "Fast", is the emphasis on timeliness. Who want government leaders to grasp the important information must be collected quickly reported. Especially urgent important information such as events, in strict accordance with the State Council concerning strengthening the emergency notice of significant reporting requirements, not only in the first period of submission to government events, also tracking developments closely, to submit measures, consequences, treatment and rehabilitation, and so on. Establish a strict responsibility system, of late, fail to hide critical situations, to be held accountable. City and County Government offices and Government departments, we should further perfect duty system, raise the level of response and the ability to respond to emergencies and. Third, to open channels of information. Role of key government information network main channel, building extends to all departments and units, vertical extension to the Township and community information networks, information staff, strengthening the work of information. Finished the basic tasks to be criticized. Did not submit information for a long time the County (district) and sectoral, this year we will take effective measuresfacilitate decision implementation process step by step. Government offices at all levels in accordance with the notice on further strengthening the supervision work of the municipal government requires, and actively carry out supervision from the following aspects. One is to focus supervision on the implementation of the major decisions and arrangements of the municipal government, in leadership on the major issues of concern to implement, on the people reflect strongly on the hot and difficult problems to solve. Current, to tightly around implement implementation municipal, and Municipal Government proposed of "three a insisted two promote, five big storming six breakthrough" of guideline and General requirements, focus in foster four industry, and construction four base, and created four brand and farmers increase, and project construction, and enterprise reform, and city construction, and private economic, and building harmony social, aspects grasp supervision, makes we of supervision work and city of General thought tune, and and reform development of pulse synchronization. Second, supervision of the breakthrough in innovation, improved methods. Supervision of method, to by passive type to active type change, by everything to focus breakthrough change, by assault supervising to track supervising change, in full using sent letter supervision, and phone urged reported, and heard reported, basic method of while, more to used field check, and random checks, and facilitate decision implementation process step by step. Government offices at all levels in accordance with the notice on further strengthening the supervision work of the municipal government requires, and actively carry out supervision from the following aspects. One is to focus supervision on the implementation of the major decisions and arrangements of the municipal government, in leadership on the major issues of concern to implement, on the people reflect strongly on the hot and difficult problems to solve. Current, to tightly around implement implementation municipal, and Municipal Government proposed of "three a insisted two promote, five big storming six breakthrough" of guideline and General requirements, focus in foster four industry, and construction four base, and created four brand and farmers increase, and project construction, and enterprise reform, and city construction, and private economic, and building harmony social, aspects grasp supervision, makes we of supervision work and city of General thought tune, and and reform development of pulse synchronization. Second, supervision of the breakthrough in innovation, improved methods. Supervision of method, to by passive type to active type change, by everything to focus breakthrough change, by assault supervising to track supervising change, in full using sent letter supervision, and phone urged reported, and heard reported, basic method of while, more to used field check, and random checks, and 则能保证正(和负)电源任何时刻都有变压器绕组输出直接提供电流经过整流 到降压稳压回路,保证了全时区输出。这样就完全避免了上文提到的电容性电 源的缺点。 这种稳压整流电路由于存在整流与不整流的2个时区段,并且模拟稳压电 路必定存在稳压值的差异,一级稳压会有少量特定的纹波,可以再加一级降压 稳压电路滤除一级的纹波。这种两级降压稳压电路不同于普通整流滤波加加压 稳压的电路,前者不存在上文提到的瓶颈问题,而后者存在这个问题。 digging out things, refine, eliminate, and strive to achieve dynamic information highlighting the timeliness, policy focus on targeted, experience information grasp typical problem emphasizes the tendency of information, freedom of information caught ... "Excellence", and accurate, short, does not speak empty words, cliches. "Fast", is the emphasis on timeliness. Who want government leaders to grasp the important information must be collected quickly reported. Especially urgent important information such as events, in strict accordance with the State Council concerning strengthening the emergency notice of significant reporting requirements, not only in the first period of submission to government events, also tracking developments closely, to submit measures, consequences, treatment and rehabilitation, and so on. Establish a strict responsibility system, of late, fail to hide critical situations, to be held accountable. City and County Government offices and Government departments, we should further perfect duty system, raise the level of response and the ability to respond to emergencies and. Third, to open channels of information. Role of key government information network main channel, building extends to all departments and units, vertical extension to the Township and community information networks, information staff, strengthening the work of information. Finished the basic tasks to be criticized. Did not submit information for a long time the County (district) and sectoral, this year we will take effective measuresunannounced visits to survey and news exposure, more powerful of measures, reflected supervision work of seriousness, and just sex and authenticity. In supervision process in the, both understand the work of progress situation, and note summary units, and the sector in work practice in the created of success experience; both found work in the exists of problem, and find associate produced problem of reasons; both for grass-roots of specific problem, proposed solution of measures and approach, and station in global of height, for Government perfect decision, and guide work proposed macro views, constantly improve supervision work of level. Third, to put the focal point in the system of supervision on the construction. To implement the responsibility system, establish and improve the implementation of the target responsibility system for everyone to task, pressure and power, all your knowledge and wisdom, to find, to form a Government as the main body, inspection Chambers led sector, caught in all aspects of supervision work. To establish supervision authority. Government offices carry out inspection, was authorized by the Government, on behalf of the Government and responsible to the Government, is an important part of government supervision and Extension, has the right to check and coordinate the right, the right to inform the right to criticism, and advice. Departments at all levels should give support to ensure supervision work smoothly. To implementation report system, on main work progress situation to by quarter submitted; on assigned by
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