专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 实用新型

JPS6010121Y2 失效
公开(公告)号：JPS6010121Y2
公开(公告)日：1985-04-08
申请号：JP6816780
申请日：1980-05-16
IPC分类号： H03K17/13

62. 实用新型

JPS5941640Y2 JPS5941640Y2 - 失效
公开(公告)号：JPS5941640Y2
公开(公告)日：1984-12-01
申请号：JP17087778
申请日：1978-12-14
IPC分类号： H03G3/34 , H03F1/00 , H03H7/24 , H03H11/24 , H03K17/13

63. 发明专利

JPS5938772B2 JPS5938772B2 - 失效
公开(公告)号：JPS5938772B2
公开(公告)日：1984-09-19
申请号：JP16590478
申请日：1978-12-29
申请人： Matsushita Electric Works Ltd
发明人： ABE TOSHIRO , IITAKA YUKIO
IPC分类号： H03K17/13 , H03K17/725 , H03K17/78
CPC分类号： H03K17/725

64. 发明专利

JPS59117458A Digital synchronizing signal detector 失效
标题翻译：数字同步信号检测器
公开(公告)号：JPS59117458A
公开(公告)日：1984-07-06
申请号：JP22490782
申请日：1982-12-23
申请人： Fuji Electric Co Ltd
发明人： HASHIMA KESAO
IPC分类号： G05F1/10 , H02M1/08 , H02M1/084 , H03K5/00 , H03K5/1536 , H03K17/13
CPC分类号： H02M1/0845
摘要： PURPOSE:To accurately detect the synchronizing point by shaping an AC by a filter, comparing by a comparator it with a zero cross, individually counting down positive and negative sides, and obtaining the time point when the initial value set by obtaining in advance by calculation becomes zero. CONSTITUTION:An AC signal is decreased by the voltage by a transformer 1, shaped by a filter 3, compared by a comparator 2 with a zero cross, the positive and negative side periods are respectively measured by down counters 4, 5 on the basis of a clock signal CK, the preset initial value is subtracted, and the time point when the value becomes zero is obtained as a synchronizing point. To obtain the initial value, the period T of an AC power source is obtained so that the output of the comparator converts from positive to negative or vice versa from the counter 4 or 5. Further, a delay time t1 is obtained by calculating from the circuit constant of the filter 3. The counted value corresponding to (T-t1) is calculated by a CPU6, and set as an initial value in the counter. In this manner, the delay due to the filter can be corrected to detect accurately the synchronizing point.
摘要翻译：目的：通过滤波器对AC进行整形来准确检测同步点，通过比较器将其与零交叉进行比较，分别对正负侧进行计数，并通过计算获得预先设定的初始值，得到时间点变成零。构成：通过由滤波器3形成的变压器1的电压降低交流信号，由具有零交叉的比较器2进行比较，正和负侧周期分别由向下计数器4,5基于时钟信号CK，减去预设的初始值，并且获得值变为零的时间点作为同步点。为了获得初始值，获得AC电源的周期T，使得比较器的输出从计数器4或5转换为正的或反之亦然。此外，延迟时间t1通过从滤波器3的电路常数。对应于（T-t1）的计数值由CPU6计算，并被设置为计数器中的初始值。以这种方式，可以校正由于滤波器引起的延迟以准确地检测同步点。

65. 实用新型

JPS58141635U 失效
公开(公告)号：JPS58141635U
公开(公告)日：1983-09-24
申请号：JP3867082
申请日：1982-03-19
IPC分类号： G05F1/10 , G05F1/455 , H01L29/74 , H02M1/08 , H03K17/13 , H03K17/30

66. 发明专利

JPS58142625A SOLID-STATE RELAY FOR DRIVING SOLENOID VALVE 失效
公开(公告)号：JPS58142625A
公开(公告)日：1983-08-24
申请号：JP2527782
申请日：1982-02-18
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： FUKUTAKE KATSUHIKO
IPC分类号： H03K17/13 , H01F7/18 , H03K17/78 , H03K17/79
摘要： PURPOSE:To prevent an electric power source from introducing noise into a low voltage controlling circuit, by connecting the low voltage controlling circuit and a zero crossing circuit by a photocoupler through an optical fiber. CONSTITUTION:In a solid state relay for controlling a valve opening and closing solenoid 11, a triode AC switch 18 is constituted so as to be opened and closed through a zero crossing circuit 14. The zero crossing circuit 14 is controlled by a low voltage controlling circuit 20, through photocouplers 15, 16 operated by low voltage. A light emitting element 16 and a photodetector 15 for constituting the photocoupler are connected by an optical fiber 17. By constituting in this way, it is possible to prevent an electric power source from introducing noise into the low voltage controlling circuit 20 from an electric power source 19.

67. 发明专利

JPS5812713B2 失效
公开(公告)号：JPS5812713B2
公开(公告)日：1983-03-09
申请号：JP15465176
申请日：1976-12-22
申请人： HITACHI NETSU KIGU KK
发明人： OSHIMI HIROKI
IPC分类号： H02M1/08 , G05D23/24 , H03K17/13 , H05B1/02 , H05B3/00

68. 发明专利

JPS5811772B2 失效
公开(公告)号：JPS5811772B2
公开(公告)日：1983-03-04
申请号：JP4482974
申请日：1974-04-19
申请人： OMRON TATEISI ELECTRONICS CO
发明人： FUKUYAMA TOSHIBUMI
IPC分类号： H03K17/13 , H01H35/00 , H01H36/00 , H01H47/24 , H03K17/00 , H03K17/78 , H03K17/945

69. 发明专利

JPS57178421A ALTERNATING-CURRENT TWO-WIRE TYPE CONTACTLESS SWITCH 失效
公开(公告)号：JPS57178421A
公开(公告)日：1982-11-02
申请号：JP6284281
申请日：1981-04-25
申请人： OMRON TATEISI ELECTRONICS CO
发明人： WATANABE YASUYUKI , MIYAKE RIYOUICHI
IPC分类号： H03K17/08 , H03K17/13 , H03K17/945
摘要： PURPOSE:To protect a circuit by limiting an output current when a load short- circuits, and cutting off the output current when an output voltage further rises. CONSTITUTION:For example, a transistor (TR) 29 turns on and consequently TRs 28 and 6 turn on, allowing a current to start flowing. At this time, if a load 3 short-cjrcuits, the current increases suddenly. Then, a voltage across a resistance 15 rises and the base current of a TR6 is reduced so that a TR7 turns on. As a dresult, the collector-emitter current of the TR6 is limited to perform constant-current operation. At this time, the collector-emitter impedance of the TR6 is high, so a voltage at a terminal (a) rises. Therefore, a current flows to a Zener diode 12 to turn on a TR30. Then, the TRs28 and 6 turn off, thus protecting the circuit.

70. 发明专利

JPS57173225A ALTERNATING-CURRENT TWO-LINE CONTACTLESS SWITCH 失效
公开(公告)号：JPS57173225A
公开(公告)日：1982-10-25
申请号：JP5906881
申请日：1981-04-18
申请人： OMRON TATEISI ELECTRONICS CO
发明人： WATANABE YASUYUKI , MIYAKE RIYOUICHI
IPC分类号： H03K17/08 , H03K17/13 , H03K17/945
摘要： PURPOSE:To protect a switch element which supplies electric power to a load by putting the switch element in constant-current operation when an excessive current flows to the load, and turning off the switch element on detecting the terminal voltage of the switch element. CONSTITUTION:When the output of a sensor circuit 25 has a low level, a TR9 turns off and a TR8 turns on, so a TR6 turns on to supply electric power to a load 3 from a power source 2. At this time, if an excessive current due to the short circuit, etc., of the load 3 flows to the load 3, a voltage drop across a resistance 15 causes a TR9 to operate, thus putting the TR6 in constant-current operation. Then, the collector-emitter voltage of the TR6 rises and a Zener diode 12 turns on. Therefore, the TR9 turns on, so the TRs 6 and 8 turn off to cut off the power supply to the load 3.

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