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1. 发明授权

US4259614A Electronic ballast-inverter for multiple fluorescent lamps 失效
标题翻译：多个荧光灯的电子镇流器逆变器
公开(公告)号：US4259614A
公开(公告)日：1981-03-31
申请号：US59218
申请日：1979-07-20
申请人： Thomas P. Kohler
发明人： Thomas P. Kohler
IPC分类号： H05B41/285 , H05B41/29
CPC分类号： H05B41/2855 , Y10S315/07
摘要： An electronic ballast-inverter for multiple fluorescent lamps employs a push-pull inverter and a series resonant circuit for driving the lamps. The inverter operates at the resonant frequency of the series resonant circuit. Current in the resonant circuit is limited, for low-load conditions, in response to a sensing voltage which is used to lower the frequency of operation of the inverter, to make the load more reactive.
摘要翻译：用于多个荧光灯的电子镇流器逆变器采用推挽逆变器和用于驱动灯的串联谐振电路。逆变器以串联谐振电路的谐振频率工作。响应于用于降低逆变器的操作频率的感测电压，谐振电路中的电流对于低负载条件是有限的，以使负载更具反应性。

2. 发明授权

US4375608A Electronic fluorescent lamp ballast 失效
标题翻译：电子荧光灯镇流器
公开(公告)号：US4375608A
公开(公告)日：1983-03-01
申请号：US154947
申请日：1980-05-30
申请人： Thomas P. Kohler
发明人： Thomas P. Kohler
IPC分类号： H05B41/24 , H05B41/298 , H05B41/392 , G05F1/00
CPC分类号： H05B41/392 , H05B41/2983 , Y10S315/07
摘要： An electronic ballast-inverter for multiple fluorescent lamps employs a push-pull inverter and a series resonant circuit for driving the lamps. The inverter operates at the resonant frequency of the series resonant circuit. The current in the resonant circuit is limited, for low load conditions, in response to a sensing voltage which is used to raise the frequency of operation of the inverter to make the load more reactive.
摘要翻译：用于多个荧光灯的电子镇流器逆变器采用推挽逆变器和用于驱动灯的串联谐振电路。逆变器工作在串联谐振电路的谐振频率。响应于用于提高逆变器的操作频率以使负载更具反应性的感测电压，谐振电路中的电流对于低负载条件是有限的。

3. 发明授权

US4250432A Touch dimmer circuit 失效
标题翻译：触摸调光电路
公开(公告)号：US4250432A
公开(公告)日：1981-02-10
申请号：US30465
申请日：1979-04-16
申请人： Thomas P. Kohler
发明人： Thomas P. Kohler
IPC分类号： H05B39/08 , H05B37/02
CPC分类号： H05B39/085 , Y10T307/766
摘要： A touch dimmer switch incorporating an integrated circuit for controlling a thyristor dimming circuit, has a touch control connected in a high impedance, unidirectionally conducting circuit, and a filter circuit for filtering out ambient electrical noise. The touch control is isolated from the AC power source so that the polarity of connection to the power source is not critical.
摘要翻译：具有用于控制晶闸管调光电路的集成电路的触摸调光开关具有连接在高阻抗单向导电电路中的触摸控制和用于滤除环境电噪声的滤波器电路。触摸控制与交流电源隔离，使得与电源的连接极性不是关键的。

4. 发明授权

US4240036A Linearized three-state switching amplifier 失效
标题翻译：线性三态开关放大器
公开(公告)号：US4240036A
公开(公告)日：1980-12-16
申请号：US29615
申请日：1979-04-13
申请人： Thomas P. Kohler
发明人： Thomas P. Kohler
IPC分类号： H03F3/217 , H03F3/38
CPC分类号： H03F3/217
摘要： A pulse width modulated switching amplifier is provided for amplifying an analog signal. Means is provided for producing positive and negative signals representative of positive and negative excursions of the analog signal, respectively. The positive and negative signals are applied to level shifters which produce positive and negative replica signals having the same waveshapes as the positive and negative signals, respectively, but which vary about a predetermined reference level. The level shifted replica signals are then applied to first and second comparators, respectively, which continuously sum the instantaneous magnitude thereof with the instantaneous magnitude of a triangular modulation signal also varying about the reference level. Each comparator produces a logical ONE output signal when the sum is positive and a logical ZERO output signal when the sum is negative. A switching circuit receives the logical signals from the comparators and produces an output pulse of one polarity when both comparators are producing logical ONE signals, an output pulse of the opposite polarity when both comparators are producing logical ZERO signals, and no output when the comparators are producing unlike logical signals. The output pulses are applied to a demodulator which produces an amplified replica of the analog signal.
摘要翻译：提供了一种用于放大模拟信号的脉宽调制开关放大器。提供了用于产生表示模拟信号的正偏移和负偏移的正和负信号的装置。正和负信号被施加到电平移位器，其分别产生具有与正信号和负信号相同波形的正和负副本信号，但是它们在预定参考电平上变化。电平移位的复制信号分别被施加到第一和第二比较器，它们将其瞬时幅度与也基于参考电平变化的三角调制信号的瞬时幅度连续相加。当和为正时，每个比较器产生逻辑“1”输出信号，当和为负时，产生逻辑“零”输出信号。开关电路接收来自比较器的逻辑信号，并且当两个比较器产生逻辑1信号时产生一极性的输出脉冲，当两个比较器产生逻辑零信号时，产生相反极性的输出脉冲，当比较器为产生不同于逻辑信号。输出脉冲被施加到产生模拟信号的放大副本的解调器。

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