公开(公告)号：EP3279916A1

公开(公告)日：2018-02-07

申请号：EP17182732.2

申请日：2017-07-24

申请人： Onkyo Corporation

发明人： MURAI, Naofumi

IPC分类号： H01H47/02 ,  H01H47/32

摘要： The present invention is intended to provide constant drive conditions of a relay switch. A relay drive circuit includes a current mirror circuit, a current suppression circuit 26, and a transistor Q3. The current mirror circuit includes a transistor Q1, a first resistor element R1, a transistor Q2, and a second resistor element R2. A relay coil 18 is provided on a current supply path extending from a collector terminal of the transistor Q1 to an earth conductor. The current suppression circuit 26 includes a capacitor C1 as a current suppression element configured to suppress, after conduction between an emitter terminal and a collector terminal of the transistor Q2 has been made, the current flowing through the current suppression element itself as compared to that in such conduction.

摘要翻译： 本发明旨在提供继电器开关的恒定驱动条件。 继电器驱动电路包括电流镜像电路，电流抑制电路26和晶体管Q3。 电流镜电路包括晶体管Q1，第一电阻器元件R1，晶体管Q2和第二电阻器元件R2。 继电器线圈18设置在从晶体管Q1的集电极端子延伸到接地导体的电流供应路径上。 电流抑制电路26包括作为电流抑制元件的电容器C1，该电容器C1被配置为在已经进行晶体管Q2的发射极端和集电极端之间的导通之后抑制流过电流抑制元件本身的电流， 这样的传导。

公开(公告)号：EP3279916B9

公开(公告)日：2020-07-22

申请号：EP17182732.2

申请日：2017-07-24

申请人： Onkyo Corporation

发明人： MURAI, Naofumi

IPC分类号： H01H47/02 ,  H01H47/32

公开(公告)号：EP3279916B1

公开(公告)日：2019-10-30

申请号：EP17182732.2

申请日：2017-07-24

申请人： Onkyo Corporation

发明人： MURAI, Naofumi

IPC分类号： H01H47/02 ,  H01H47/32

摘要： The present invention is intended to provide constant drive conditions of a relay switch. A relay drive circuit includes a current mirror circuit, a current suppression circuit 26, and a transistor Q3. The current mirror circuit includes a transistor Q1, a first resistor element R1, a transistor Q2, and a second resistor element R2. A relay coil 18 is provided on a current supply path extending from a collector terminal of the transistor Q1 to an earth conductor. The current suppression circuit 26 includes a capacitor C1 as a current suppression element configured to suppress, after conduction between an emitter terminal and a collector terminal of the transistor Q2 has been made, the current flowing through the current suppression element itself as compared to that in such conduction.