公开(公告)号：US06714068B2

公开(公告)日：2004-03-30

申请号：US10036031

申请日：2001-12-31

Applicant: Lothar Musiol ,  Henning Hohmann

Inventor： Lothar Musiol ,  Henning Hohmann

IPC: H03F114

CPC classification number: H03F3/72 ,  H03F1/526

Abstract: A circuit configuration is configured such that selectively a first amplifier or a second amplifier amplifies signals. The second amplifier is operated depending on the conditions established at the input terminal of the first amplifier. A switching element has a controlled path connected to an input terminal of the second amplifier. The switching state of the switching element can be controlled by the input terminal of the first amplifier. As a result, it is possible to effect the changeover between the amplifiers with minimal outlay and without disturbing the amplifiers.

Abstract translation: 电路配置被配置为使得选择性地第一放大器或第二放大器放大信号。 第二放大器根据在第一放大器的输入端子处建立的条件来操作。 开关元件具有连接到第二放大器的输入端子的受控通路。 开关元件的开关状态可以由第一放大器的输入端控制。 结果，可以以最小的费用来实现放大器之间的切换，而不会扰乱放大器。

公开(公告)号：US5214399A

公开(公告)日：1993-05-25

申请号：US703204

申请日：1991-05-20

Applicant: Henning Hohmann

Inventor： Henning Hohmann

IPC: H03J5/24 ,  H04B1/18 ,  H04N5/44 ,  H04N5/50

CPC classification number: H03J5/244

Abstract: A circuit configuration, especially in a television set, for range switching in tuners having at least two ranges includes at least two preselector stages each being assigned a respective tuner range. Each of the preselector stages is connected between a supply potential terminal and a reference potential terminal. Each of the preselector stages has an input terminal, an output terminal and an MOS tetrode. A switchgear for activating each of the MOS tetrodes has a switch output terminal being connected to the preselector stages and being connectable to the reference potential terminal. The preselector stages are coupled to one another for activating one of the preselector stages as a function of a switch state of the switch output terminal.

Abstract translation: 用于具有至少两个范围的调谐器中的范围切换的电视配置，特别是电视机中的电路配置包括至少两个预选器级，每个预选器级被分配相应的调谐器范围。 每个预选器级连接在电源端和参考电位端之间。 每个预选器级具有输入端子，输出端子和MOS四极管。 用于激活每个MOS四极管的开关装置具有开关输出端子，其连接到预选器级并且可连接到参考电位端子。 预选器级彼此耦合，用于根据开关输出端子的开关状态来激活预选器级中的一个。

公开(公告)号：US5745013A

公开(公告)日：1998-04-28

申请号：US756347

申请日：1996-11-26

Applicant: Henning Hohmann

Inventor： Henning Hohmann

IPC: H03B1/00 ,  H03B5/12 ,  H03J5/24 ,  H03B5/08

CPC classification number: H03B5/1231 ,  H03B5/1209 ,  H03B5/1243 ,  H03B2200/004 ,  H03B2200/0048 ,  H03B2200/0056 ,  H03B2200/0098 ,  H03B2201/0208

Abstract: A variable-frequency oscillator configuration, in particular for tuners, includes a feedback network for an oscillator amplifier. The feedback network contains a series circuit formed by two resonant circuit inductors and a resonant circuit capacitor, connected in parallel with a series circuit formed by a further resonant circuit capacitor and a variable capacitor. A switching device is connected to a coupling node between the two inductors, for short circuiting the first resonant circuit capacitor and the resonant circuit inductor connected thereto under the control of a switching signal. The feedback network can consequently be switched over between two frequency bands and is symmetrical with regard to the high-frequency effect.

Abstract translation: 特别是用于调谐器的可变频率振荡器配置包括用于振荡器放大器的反馈网络。 反馈网络包含由两个谐振电路电感器和谐振电路电容器构成的串联电路，该谐振电路电容器与由另外的谐振电路电容器和可变电容器形成的串联电路并联连接。 开关装置连接到两个电感器之间的耦合节点，用于在开关信号的控制下短路第一谐振电路电容器和与其连接的谐振电路电感器。 因此，反馈网络可以在两个频带之间切换，并且关于高频效应是对称的。

公开(公告)号：US06751449B1

公开(公告)日：2004-06-15

申请号：US09702027

申请日：2000-10-30

Applicant: Henning Hohmann ,  Bernd Pflaum

Inventor： Henning Hohmann ,  Bernd Pflaum

IPC: H04Q720

CPC classification number: H03J5/244 ,  H03G1/0029

Abstract: Conventional circuit configurations for range changeover between different bands (UHF, VHF) in television receivers utilize MOS tetrodes whose operating point adjustment is unproblematic. The MOS tetrodes of the inventive circuit configuration comprise a constant potential at their source electrode regardless of the band that is selected. Besides the savings in terms of components, the invention simplifies the dimensioning of the circuit configuration. The invention can be used in all high-frequency receivers having a plurality of frequency ranges between which a changeover is performed.

Abstract translation: 用于电视接收机中的不同频带（UHF，VHF）之间的范围切换的传统电路配置利用了MOS工作点，其工作点调整是无问题的。 本发明电路配置的MOS四极包括在其源电极处的恒定电位，而不考虑所选择的频带。 除了节省部件，本发明简化了电路配置的尺寸。 本发明可以用于具有多个频率范围的所有高频接收机，在这些频率范围之间进行切换。

公开(公告)号：US5204645A

公开(公告)日：1993-04-20

申请号：US703197

申请日：1991-05-20

Applicant: Henning Hohmann

Inventor： Henning Hohmann

IPC: H03J5/24 ,  H04B1/18 ,  H04N5/44

CPC classification number: H03J5/244

Abstract: A circuit configuration for range switching in tuners having at least two ranges includes at least two preselector stages each being assigned to a respective tuner range. Each of the preselector stages is connected between a supply potential terminal and a reference potential terminal. Each of the preselector stages has an input terminal, an output terminal and an MOS tetrode with a source terminal. A switchgear has switch outputs to be connected to the reference potential terminal for activating each of the MOS tetrodes. At least one resistor is connected between the source terminal of at least one of the MOS tetrodes and at least one of the switch outputs.

Abstract translation: 用于具有至少两个范围的调谐器中的范围切换的电路配置包括至少两个预选器级，每个预选器级分配给相应的调谐器范围。 每个预选器级连接在电源端和参考电位端之间。 每个预选器级具有输入端子，输出端子和具有源极端子的MOS四极管。 开关装置具有连接到参考电位端子的开关输出，用于激活每个MOS四极管。 至少一个电阻器连接在至少一个MOS四极管的源极端子与至少一个开关输出端子之间。

公开(公告)号：US06842094B2

公开(公告)日：2005-01-11

申请号：US10244641

申请日：2002-09-16

Applicant: Henning Hohmann

Inventor： Henning Hohmann

IPC: H04N5/44 ,  H01L27/08 ,  H03J3/18 ,  H03J5/24 ,  H04B1/18 ,  H03K3/18

CPC classification number: H03J3/185 ,  H01L27/0811

Abstract: An electronic component has at least a first diode and a second diode that are capacitance diodes. The characteristic curve of the second diode has a fixed, known relationship to that of the first diode. For example, the first diode and the second diode can have an identical variation ratio, being the quotient of the maximum and minimum adjustable capacitances. These components are suitable for use in television tuners, for example in three-band tuners, where diodes having the same characteristic curve and coming from different components are arranged and connected in each sub-receiving unit. The integration of a plurality of diodes reduces the number of components required, and also the time and cost involved in grouping together diodes with good synchronization properties.

Abstract translation: 电子部件至少具有作为电容二极管的第一二极管和第二二极管。 第二二极管的特性曲线与第一二极管的特性曲线具有固定的已知关系。 例如，第一二极管和第二二极管可以具有相同的变化比，即最大和最小可调电容的商。 这些组件适用于电视调谐器，例如在三频调谐器中，其中具有相同特性曲线并且来自不同部件的二极管被布置和连接在每个子接收单元中。 多个二极管的集成减少了所需组件的数量，以及将具有良好同步性能的二极管组合在一起的时间和成本。