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1. 发明专利

JP2007336534A Single stage balanced voltage amplifier 审中-公开
标题翻译：单级平衡电压放大器
公开(公告)号：JP2007336534A
公开(公告)日：2007-12-27
申请号：JP2007143426
申请日：2007-05-30
申请人： Chi Ming John Lam , ラム・チ・ミン・ジョンLAM Chi Ming John
发明人： LAM CHI MING JOHN
IPC分类号： H03F1/24 , H03F3/45
CPC分类号： H03F3/52 , H03F3/45 , H03F2203/45291 , H03F2203/45318 , H03F2203/45338 , H03F2203/45372 , H03F2203/45631
摘要： PROBLEM TO BE SOLVED: To provide a single stage balanced voltage amplifier to achieve a high signal gain while holding an output impedance low.
SOLUTION: The balanced voltage amplifier includes a single stage having three pairs of vacuum tube triodes for amplifying two input signals (+ Input and - Input), and generating two output signals (+ Output and - Output). The balanced voltage amplifier provides a high voltage gain, wide bandwidth and low output impedance. A local feedback may be provided between the outputs and a second pair of the vacuum tube triodes. An overall feedback may be provided between the outputs and a first pair of the vacuum tube triodes. With the use of the local or overall feedback, further broadening the bandwidth and lowering the output impedance improve the overall balancing.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供单级平衡电压放大器，以在保持输出阻抗低的同时实现高信号增益。
解决方案：平衡电压放大器包括一个单级，具有三对用于放大两个输入信号（+输入和 - 输入）的真空管三极管，并产生两个输出信号（+输出和 - 输出）。平衡电压放大器提供高电压增益，宽带宽和低输出阻抗。可以在输出端和第二对真空管三极管之间提供局部反馈。可以在输出和第一对真空管三极管之间提供总体反馈。通过使用本地或整体反馈，进一步拓宽带宽和降低输出阻抗，提高整体平衡。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2007184918A Balanced amplifier 审中-公开
标题翻译：平衡放大器
公开(公告)号：JP2007184918A
公开(公告)日：2007-07-19
申请号：JP2006349684
申请日：2006-12-26
申请人： Chi Ming John Lam , ラム・チ・ミン・ジョンLAM Chi Ming John
发明人： LAM CHI MING JOHN
IPC分类号： H03F3/22 , H03F1/36 , H03F3/181 , H03F3/28 , H03F3/45
CPC分类号： H03F3/22 , H03F3/45
摘要： PROBLEM TO BE SOLVED: To provide a novel balanced amplifier available for a power amplifier comprising a vacuum valve for characteristic enhancement.
SOLUTION: A balanced amplifier includes a first stage which is connected with a second stage and outputs signals to the second stage, and the first stage includes a first differential amplifier which receives a balanced input signal and comprises two sets of feedback loops. At least one set of feedback loops feeds part of signals output from the second stage back to the first differential amplifier. The second stage includes a second differential amplifier for amplifying signals received from the first stage and holds the balanced signal.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供可用于功率放大器的新型平衡放大器，其包括用于特征增强的真空阀。解决方案：平衡放大器包括与第二级连接并将信号输出到第二级的第一级，并且第一级包括接收平衡输入信号并包括两组反馈回路的第一差分放大器。至少一组反馈回路将从第二级输出的信号的一部分返回到第一差分放大器。第二级包括用于放大从第一级接收的信号并保持平衡信号的第二差分放大器。版权所有（C）2007，JPO＆INPIT

3. 发明申请

US20130093517A1 Buffer Amplifier 有权
标题翻译：缓冲放大器
公开(公告)号：US20130093517A1
公开(公告)日：2013-04-18
申请号：US13692703
申请日：2012-12-03
申请人： Chi Ming John LAM
发明人： Chi Ming John LAM
IPC分类号： H03F3/45
CPC分类号： H03F3/45071 , A23V2002/00 , A61K31/198 , A61K31/205 , A61K31/40 , A61K31/4045 , A61K31/405 , A61K31/4415 , A61K31/519 , A61K31/675 , A61K31/7056 , A61K31/714 , H03F3/301 , H03F3/3069 , A61K2300/00 , A23V2200/32 , A23V2250/706 , A23V2250/7052 , A23V2250/7056 , A23V2250/0632
摘要： A buffer amplifier with unity voltage gain, high input impedance, high speed, high current gain, high output power and low offset includes three stages and a DC servo circuit. The first stage of the buffer amplifier contains complementary N-channel and P-channel MOSFET source followers that provide high input impedance to buffer the input signal source. A feedback DC servo signal is provided to correct the subsequent stages so as to maintain the output at virtual DC ground level. The second stage is a driver stage that also contains complementary N-channel and P-channel MOSFET source followers to provide sufficient current to drive the output stage. The last stage is an output stage that contains at least one pair of complementary power MOSFETs or BJTs to deliver high currents to a load.
摘要翻译：具有单位电压增益，高输入阻抗，高速度，高电流增益，高输出功率和低失调的缓冲放大器包括三级和直流伺服电路。缓冲放大器的第一级包含互补的N沟道和P沟道MOSFET源极跟随器，提供高输入阻抗来缓冲输入信号源。提供反馈DC伺服信号以校正后续级，以便将输出保持在虚拟DC接地电平。第二级是驱动器级，其还包含互补的N沟道和P沟道MOSFET源极跟随器，以提供足够的电流来驱动输出级。最后一个阶段是包含至少一对互补功率MOSFET或BJT以输出高电流到负载的输出级。

4. 发明授权

US07482867B2 Single stage balanced voltage amplifier 失效
标题翻译：单级平衡电压放大器
公开(公告)号：US07482867B2
公开(公告)日：2009-01-27
申请号：US11748508
申请日：2007-05-15
申请人： Chi Ming John Lam
发明人： Chi Ming John Lam
IPC分类号： H03F3/45
CPC分类号： H03F3/52 , H03F3/45 , H03F2203/45291 , H03F2203/45318 , H03F2203/45338 , H03F2203/45372 , H03F2203/45631
摘要： A balanced voltage amplifier is disclosed as comprising a single stage containing three pairs of vacuum tube triodes configured to amplify two input signals (+INPUT, −INPUT) and to generate two output signals (+OUTPUT, −OUTPUT). The balanced voltage amplifier offers high voltage gain, wide bandwidth and low output impedance. Local feedback may be applied between the outputs and the second pair of triodes. Overall feedback may be applied between the outputs and the first pair of triodes. If local or overall feedback is used, it will further broaden the bandwidth, lower the output impedance and improve the overall balancing.
摘要翻译：公开了一种平衡电压放大器，其包括单个级，其包含三对配置成放大两个输入信号（+ INPUT，-INPUT）并产生两个输出信号（+ OUTPUT，-OUTPUT）的真空管三极管。平衡电压放大器提供高电压增益，宽带宽和低输出阻抗。可以在输出和第二对三极管之间应用局部反馈。可以在输出和第一对三极管之间应用总体反馈。如果使用本地或整体反馈，它将进一步扩大带宽，降低输出阻抗并改善整体平衡。

5. 发明授权

US07304535B2 Balanced amplifier 失效
公开(公告)号：US07304535B2
公开(公告)日：2007-12-04
申请号：US11351764
申请日：2006-02-10
申请人： Chi Ming John Lam
发明人： Chi Ming John Lam
IPC分类号： H03F3/45
CPC分类号： H03F3/22 , H03F3/45
摘要： A balanced amplifier is disclosed as comprising an input stage connected with a second stage, in which the input stage outputs signals to the second stage, and the first stage includes a first differential amplifier for receiving balanced input signals and is provided with two pairs of feedback loops, at least one of the pair of feedback loops for feedbacking part of signals outputted by the second stage to the first differential amplifier, and the second stage includes a second differential amplifier for amplifying signals received from the first stage and for maintaining the balanced signals.

6. 发明授权

US08854138B2 Buffer amplifier 有权
标题翻译：缓冲放大器
公开(公告)号：US08854138B2
公开(公告)日：2014-10-07
申请号：US13692703
申请日：2012-12-03
申请人： Chi Ming John Lam
发明人： Chi Ming John Lam
IPC分类号： H03F3/217 , A61K31/4045 , A23L1/30 , A23L1/302 , A23L1/305 , A61K31/519 , H03F3/45 , A61K31/205 , A61K31/675 , A61K31/198 , A61K31/40 , A61K31/4415 , A61K31/405 , A61K31/714 , A61K31/7056
CPC分类号： H03F3/45071 , A23V2002/00 , A61K31/198 , A61K31/205 , A61K31/40 , A61K31/4045 , A61K31/405 , A61K31/4415 , A61K31/519 , A61K31/675 , A61K31/7056 , A61K31/714 , H03F3/301 , H03F3/3069 , A61K2300/00 , A23V2200/32 , A23V2250/706 , A23V2250/7052 , A23V2250/7056 , A23V2250/0632
摘要： A buffer amplifier with unity voltage gain, high input impedance, high speed, high current gain, high output power and low offset includes three stages and a DC servo circuit. The first stage of the buffer amplifier contains complementary N-channel and P-channel MOSFET source followers that provide high input impedance to buffer the input signal source. A feedback DC servo signal is provided to correct the subsequent stages so as to maintain the output at virtual DC ground level. The second stage is a driver stage that also contains complementary N-channel and P-channel MOSFET source followers to provide sufficient current to drive the output stage. The last stage is an output stage that contains at least one pair of complementary power MOSFETs or BJTs to deliver high currents to a load.
摘要翻译：具有单位电压增益，高输入阻抗，高速度，高电流增益，高输出功率和低失调的缓冲放大器包括三级和直流伺服电路。缓冲放大器的第一级包含互补的N沟道和P沟道MOSFET源极跟随器，提供高输入阻抗来缓冲输入信号源。提供反馈DC伺服信号以校正后续级，以便将输出保持在虚拟DC接地电平。第二级是驱动器级，其还包含互补的N沟道和P沟道MOSFET源极跟随器，以提供足够的电流来驱动输出级。最后一个阶段是包含至少一对互补功率MOSFET或BJT以输出高电流到负载的输出级。

7. 发明授权

US07733172B2 DC self-biased vacuum tube differential amplifier with grid-to-cathode over-voltage protection 失效
标题翻译：直流自偏压真空管差动放大器，具有栅极到阴极的过电压保护
公开(公告)号：US07733172B2
公开(公告)日：2010-06-08
申请号：US12351884
申请日：2009-01-12
申请人： Chi Ming John Lam
发明人： Chi Ming John Lam
IPC分类号： H03F3/45
CPC分类号： H03F3/45 , H03F1/54 , H03F2200/03
摘要： A single stage differential amplifier is disclosed as comprising a pair of vacuum tube triodes for amplifying two input signals and generating two output signals. The differential amplifier has DC self-biasing ability and grid-to-cathode over-voltage protection for directly coupling from the outputs of another differential amplifier. By possessing these unique features, this differential amplifier becomes an important building block in forming a balanced amplifier by cascading multi differential amplifiers in a directly coupled fashion.
摘要翻译：公开了一种单级差分放大器，包括一对用于放大两个输入信号并产生两个输出信号的真空管三极管。差分放大器具有直流自偏置能力和栅极到阴极过电压保护，用于从另一个差分放大器的输出直接耦合。通过拥有这些独特的特征，该差分放大器成为通过以直接耦合的方式级联多个差分放大器来形成平衡放大器的重要组成部分。

8. 发明申请

US20090212857A1 DC Self-Biased Vacuum Tube Differential Amplifier With Grid-to-Cathode Over-Voltage Protection 失效
标题翻译：直流自偏压真空管差分放大器，具有栅极到阴极过电压保护
公开(公告)号：US20090212857A1
公开(公告)日：2009-08-27
申请号：US12351884
申请日：2009-01-12
申请人： Chi Ming John LAM
发明人： Chi Ming John LAM
IPC分类号： H03F3/45
CPC分类号： H03F3/45 , H03F1/54 , H03F2200/03
摘要： A single stage differential amplifier is disclosed as comprising a pair of vacuum tube triodes for amplifying two input signals and generating two output signals. The differential amplifier has DC self-biasing ability and grid-to-cathode over-voltage protection for directly coupling from the outputs of another differential amplifier. By possessing these unique features, this differential amplifier becomes an important building block in forming a balanced amplifier by cascading multi differential amplifiers in a directly coupled fashion.
摘要翻译：公开了一种单级差分放大器，包括一对用于放大两个输入信号并产生两个输出信号的真空管三极管。差分放大器具有直流自偏置能力和栅极到阴极过电压保护，用于从另一个差分放大器的输出直接耦合。通过拥有这些独特的特征，该差分放大器成为通过以直接耦合的方式级联多个差分放大器来形成平衡放大器的重要组成部分。

9. 发明申请

US20070296492A1 Single Stage Balanced Voltage Amplifier 失效
标题翻译：单级平衡电压放大器
公开(公告)号：US20070296492A1
公开(公告)日：2007-12-27
申请号：US11748508
申请日：2007-05-15
申请人： Chi Ming John LAM
发明人： Chi Ming John LAM
IPC分类号： H03F3/36
CPC分类号： H03F3/52 , H03F3/45 , H03F2203/45291 , H03F2203/45318 , H03F2203/45338 , H03F2203/45372 , H03F2203/45631
摘要： A balanced voltage amplifier is disclosed as comprising a single stage containing three pairs of vacuum tube triodes configured to amplify two input signals (+INPUT, −INPUT) and to generate two output signals (+OUTPUT, −OUTPUT). The balanced voltage amplifier offers high voltage gain, wide bandwidth and low output impedance. Local feedback may be applied between the outputs and the second pair of triodes. Overall feedback may be applied between the outputs and the first pair of triodes. If local or overall feedback is used, it will further broaden the bandwidth, lower the output impedance and improve the overall balancing.
摘要翻译：公开了一种平衡电压放大器，其包括单个级，其包含三对配置成放大两个输入信号（+ INPUT，-INPUT）并产生两个输出信号（+ OUTPUT，-OUTPUT）的真空管三极管。平衡电压放大器提供高电压增益，宽带宽和低输出阻抗。可以在输出和第二对三极管之间应用局部反馈。可以在输出和第一对三极管之间应用总体反馈。如果使用本地或整体反馈，它将进一步扩大带宽，降低输出阻抗并改善整体平衡。

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