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1. 发明授权

US3801860A Fail-safe lamp filament monitoring circuit 失效
标题翻译：故障安全灯管状监测电路
公开(公告)号：US3801860A
公开(公告)日：1974-04-02
申请号：US29123072
申请日：1972-09-22
申请人： WESTINGHOUSE BRAKE & SIGNAL
发明人： KING K
IPC分类号： H01K1/60 , H01J7/42 , G08B21/00 , H05B37/03
CPC分类号： H01K1/60
摘要： This invention relates to a fail-safe lamp filament monitoring circuit including an a.c. signal source to provide an a.c. signal to the primary of a transformer which, in turn, supplies alternating electrical energy to a lamp filament connected in its secondary, a monitoring device responsive to the current in the primary winding and an auxiliary loading device connected in the secondary. The auxiliary loading device is effective to increase power flow through the transformer to energize the filament to a level where the monitoring device is operated and held operated until the lamp filament is no longer energized at which time the monitoring device is released at the transformer magnetizing current.
摘要翻译：本发明涉及一种故障保护灯丝灯丝监测电路，包括一信号源提供a.c. 信号到变压器的初级，该变压器又向连接在其次级侧的灯丝提供交替电能，响应于初级绕组中的电流的监视装置和连接在次级中的辅助装载装置。辅助加载装置有效地增加通过变压器的功率流，以将灯丝激励到监测装置被操作和保持操作的水平，直到灯丝不再被通电，此时监测装置在变压器励磁电流下被释放。

2. 发明授权

US3725728A Fail-safe lamp filament monitoring circuit 失效
标题翻译：故障安全灯管状监测电路
公开(公告)号：US3725728A
公开(公告)日：1973-04-03
申请号：US6976570
申请日：1970-09-04
申请人： WESTINGHOUSE BRAKE & SIGNAL
发明人： KING K
IPC分类号： H01K1/60 , H01J7/44
CPC分类号： H01K1/60
摘要： This invention relates to a fail-safe lamp filament monitoring circuit including an a. c. signal source to provide an a. c. signal to the primary of a transformer which, in turn, supplies alternating electrical energy to a lamp filament connected in its secondary, a monitoring device responsive to the current in the primary winding and an auxiliary loading device connected in the secondary. The auxiliary loading device is effective to increase power flow through the transformer to energize the filament to a level where the monitoring device is operated and held operated until the lamp filament is no longer energized at which time the monitoring device is released at the transformer magnetizing current.
摘要翻译：本发明涉及一种故障保护灯丝灯丝监测电路，包括a。 C。信号源提供a。 C。信号到变压器的初级，该变压器又向连接在其次级侧的灯丝提供交替电能，响应于初级绕组中的电流的监视装置和连接在次级中的辅助装载装置。辅助加载装置有效地增加通过变压器的功率流，以将灯丝激励到监测装置被操作和保持操作的水平，直到灯丝不再被通电，此时监测装置在变压器励磁电流下被释放。

3. 发明授权

US3839667A Inverters 失效
标题翻译：逆变器
公开(公告)号：US3839667A
公开(公告)日：1974-10-01
申请号：US26846072
申请日：1972-07-03
申请人： WESTINGHOUSE BRAKE & SIGNAL
发明人： KING K
IPC分类号： H02M7/537 , H02M7/5387 , H02M
CPC分类号： H02M7/537 , H02M7/53875
摘要： A polyphase, floating neutral, inverter in which harmonics of the operating frequency are added to the fundamental to increase the line-to-line output voltage for a given input voltage. In the three-phase three-wire case the Triplen harmonics are used. The inverter uses single phase amplifiers and a polyphase drive signal generator. One generator is described in detail. The inverter also includes a rapid acting semiconductor device protection circuit which employs an electrical network analog of the thermal characteristics of the device.
摘要翻译：一个多相，浮动中性点，逆变器，其中将工作频率的谐波添加到基极以增加给定输入电压的线间输出电压。在三相三线情况下，使用三相谐波。逆变器使用单相放大器和多相驱动信号发生器。详细描述了一台发电机。该逆变器还包括一个快速作用的半导体器件保护电路，其利用该装置的热特性的电网模拟。

4. 发明授权

US3824442A Inverter circuits 失效
标题翻译：逆变器电路
公开(公告)号：US3824442A
公开(公告)日：1974-07-16
申请号：US28293872
申请日：1972-08-23
申请人： WESTINGHOUSE BRAKE & SIGNAL
发明人： KING K
IPC分类号： H02M7/537 , H02M7/5387 , H02M7/00
CPC分类号： H02M7/537 , H02M7/53875
摘要： A polyphase, floating neutral, inverter in which harmonics of the operating frequency are added to the fundamental to increase the line-to-line output voltage for a given input voltage. In the three-phase three-wire case the Triplen harmonics are used. The inverter uses single phase amplifiers and a polyphase drive signal generator. One generator is described in detail. The inverter also includes a rapid acting semiconductor device protection circuit which employs an electrical network analog of the thermal characteristics of the device.
摘要翻译：一个多相，浮动中性点，逆变器，其中将工作频率的谐波添加到基极以增加给定输入电压的线间输出电压。在三相三线情况下，使用三相谐波。逆变器使用单相放大器和多相驱动信号发生器。详细描述了一台发电机。该逆变器还包括一个快速作用的半导体器件保护电路，其利用该装置的热特性的电网模拟。

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