专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4112286A Power circuit for induction heating 失效
标题翻译：感应加热电源电路
公开(公告)号：US4112286A
公开(公告)日：1978-09-05
申请号：US700601
申请日：1976-06-28
申请人： Arnold N. Alderman , Shashi B. Dewan
发明人： Arnold N. Alderman , Shashi B. Dewan
IPC分类号： H02M7/523 , H05B6/06 , H05B5/04
CPC分类号： H02M7/523 , H05B6/06
摘要： A power circuit for use in billet heating, surface heat treating and melting and protective circuitry associated therewith. The power circuit generally comprises a source of potential in series with a pair of inductances and an inverter module. The inverter module has two sections each comprised of a thyristor in parallel with a diode. A pair of series connected charging capacitors are connected across the source of potential and a load is connected from between the capacitors to between the two sections of the inverter module. Current flows through one thyristor, through the load and charges the capacitors. The capacitors discharge and a reverse current flows through the load and through the corresponding diode. This cycle is repeated then with the opposite section of the inverter module. A commutation failure protection circuit is provided which detects the voltage collapse condition accompanying a short circuit through the inverter module and when this occurs, it acts to shut off the thyristors. An open load detect circuit is provided which senses the voltage build up which occurs when the load is open, and this circuit also acts to shut off the thyristors should this happen. The power circuit also has a peak power detect circuit which compares the phasing of the voltage and current and enables the circuit to maintain operation at maximum power by inhibiting any frequency increase when resonance operation is achieved.
摘要翻译：用于坯料加热，表面热处理和熔化的电源电路以及与其相关联的保护电路。电源电路通常包括与一对电感和逆变器模块串联的电位源。逆变器模块具有两个部分，每个部分由与二极管并联的晶闸管组成。一对串联的充电电容器连接在电源上，负载从电容器之间连接到逆变器模块的两个部分之间。电流通过一个晶闸管，通过负载并对电容器充电。电容放电，反向电流流过负载并通过相应的二极管。然后用逆变器模块的相对部分重复该循环。提供换向故障保护电路，其检测通过逆变器模块伴随短路的电压崩溃状态，并且当发生这种情况时，其用于切断晶闸管。提供一种开路负载检测电路，用于检测当负载断开时发生的电压累积，并且如果发生这种情况，该电路也用于切断晶闸管。电源电路还具有峰值功率检测电路，其比较电压和电流的相位，并且使得电路能够通过在实现谐振操作时抑制任何频率增加来保持最大功率的操作。

2. 发明授权

US4799039A Emergency lighting supervisory system 失效
标题翻译：应急照明监控系统
公开(公告)号：US4799039A
公开(公告)日：1989-01-17
申请号：US48530
申请日：1987-05-08
申请人： James E. Balcom , Edward P. Kozek , Arnold N. Alderman
发明人： James E. Balcom , Edward P. Kozek , Arnold N. Alderman
IPC分类号： G08B5/36 , H02J9/06 , G08B29/00
CPC分类号： H05B41/2853 , G08B7/062 , H02J9/065 , Y10S320/21
摘要： An emergency lighting supervisory system monitors utility power so as to automatically connect emergency lights to a battery source when utility power fails. The system continuously monitors selected parameters and, automatically, periodically tests the system under simulated full-load emergency conditions and annunciates the results of these tests. Such periodic tests also enhance battery capacity. The system also provides a closed loop three-mode battery charging control circuit. It can optionally communicate its status as well as receive commands from an external computer or other source by means of a data communication interface.
摘要翻译：应急照明监控系统监视市电电力，以便在市电电源故障时将应急灯自动连接到电池电源。系统持续监控所选参数，并在模拟满载紧急情况下自动定期测试系统，并通知这些测试的结果。这种周期性测试还可以提高电池容量。该系统还提供闭环三模电池充电控制电路。它可以可选地通过数据通信接口传送其状态以及从外部计算机或其他源接收命令。

3. 发明授权

US4843300A Improved power supply for intermittently energizing an external device requiring high power during intermittent periods of time from an input power source with relatively lower instantaneous power capability 失效
标题翻译：改进的电源，用于在具有相对较低的瞬时功率能力的输入电源的间歇期间间歇地激励需要高功率的外部设备
公开(公告)号：US4843300A
公开(公告)日：1989-06-27
申请号：US145225
申请日：1988-01-19
申请人： Arnold N. Alderman
发明人： Arnold N. Alderman
IPC分类号： H02M3/156
CPC分类号： H02M3/1563
摘要： An improved power supply capable of driving an external device at relatively high power levels for intermittent periods of time with the power supply driven by relatively low current input power which can vary widely in voltage. The power supply incorporates a step-up switching voltage converter module for increasing the input voltage to a higher value so as to charge an energy storage capacitor to an energy level sufficient to power the external device for said intermittent periods of time at relatively high current. The energy storage device voltage output is regulated by a step-down switching voltage converter module. Control signals sensing the voltage of the energy storage capacitor can be used to control energization and de-energization of the external device.
摘要翻译：一种改进的电源，其能够以相对较高的功率电平驱动间歇性时间段的外部设备，其中电源由电压变化很大的相对低的电流输入功率驱动。电源包括升压开关电压转换器模块，用于将输入电压增加到更高的值，以将能量存储电容器充电到足以在相对高的电流下对所述间歇时间段内的外部装置供电的能量水平。储能装置电压输出由降压开关电压转换器模块调节。可以使用感测储能电容器的电压的控制信号来控制外部装置的通电和断电。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式