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51. 发明授权

US4348708A Ground fault circuit interrupting device with improved coordination of electronic circuit operation 失效
标题翻译：接地故障电路中断装置，电子电路运行协调
公开(公告)号：US4348708A
公开(公告)日：1982-09-07
申请号：US260513
申请日：1981-05-04
申请人： Edward K. Howell
发明人： Edward K. Howell
IPC分类号： H02H1/04 , H02H3/33
CPC分类号： H02H3/33 , H02H1/04
摘要： In an integrated circuit for a ground fault circuit interrupting device, a power supply voltage regulator is utilized to turn on a double grounded neutral excitation oscillator and to inhibit trip initiating thyristor triggering while the half-wave rectified supply voltage is in regulation and, as the supply voltage goes into regulation near the beginning of each alternate half-cycle, condition a comparator to issue a thyristor triggering pulse if an integrated fault signal voltage has achieved an established trip threshold level.
摘要翻译：在用于接地故障电路中断装置的集成电路中，利用电源电压调节器来接通双接地中性励磁振荡器，并且在半波整流电源调节时禁止跳闸启动晶闸管触发，并且作为电源电压在每个交替的半周期开始时进入调节状态，如果集成的故障信号电压达到建立的跳闸阈值电平，则使比较器发出晶闸管触发脉冲。

52. 发明授权

US4288833A Lightning arrestor 失效
标题翻译：避雷器
公开(公告)号：US4288833A
公开(公告)日：1981-09-08
申请号：US103962
申请日：1979-12-17
申请人： Edward K. Howell
发明人： Edward K. Howell
IPC分类号： H02H5/04 , H02H9/04 , H02H9/06
CPC分类号： H02H9/06 , H02H5/047 , H02H9/042 , H01H2037/763
摘要： A metal oxide varistor (MOV) is directly electrically connected between a line conductor and ground to dissipate the energy associated with voltage surges appearing on the line conductor. A thermostatic switch, in the form of a resilient arm held in electrical connection with one of the MOV electrodes by low melting point solder, opens in response to a failing MOV to insert a spark gap electrically in series with the MOV. Overvoltage protection is thus maintained, albeit limited to higher level voltage surges.
摘要翻译：金属氧化物变阻器（MOV）直接电连接在线路导体和地之间以消散与线路导体上出现的电压浪涌相关的能量。通过低熔点焊料保持与MOV电极中的一个电连接的弹性臂的恒温开关响应于故障MOV而与MOV串联地插入火花隙而打开。因此，可以保持过电压保护，尽管仅限于较高电平的电压浪涌。

53. 发明授权

US4272797A Fast recovery peak detector 失效
标题翻译：快速恢复峰值检测器
公开(公告)号：US4272797A
公开(公告)日：1981-06-09
申请号：US62460
申请日：1979-07-31
申请人： Edward K. Howell
发明人： Edward K. Howell
IPC分类号： H02H3/093 , H02H3/08
CPC分类号： H02H3/093
摘要： In a circuit breaker static trip unit, a peak detector generates a DC current signal of a magnitude proportional to the rectified peak signal voltage developed across a current transformer burden resistor. The peak detector utilizes a differential amplifier operating in conjunction with a peak signal voltage detecting circuit connected therewith as a negative DC feedback network. A recovery circuit detects the relative amplitudes of consecutive signal voltage peaks pursuant to rapidly adjusting the peak signal voltage detecting circuit to signal voltage peaks of decreasing amplitudes.
摘要翻译：在断路器静态跳闸单元中，峰值检测器产生与电流互感器负载电阻器上产生的整流峰值信号电压成正比的直流电流信号。峰值检测器利用与作为负DC反馈网络连接的峰值信号电压检测电路一起工作的差分放大器。恢复电路根据快速调整峰值信号电压检测电路来检测连续信号电压峰值的相对振幅，以信号降低振幅的电压峰值。

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