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    • 10. 发明授权
    • Solid state relay
    • 固态继电器
    • US6034853A
    • 2000-03-07
    • US805628
    • 1997-02-26
    • Shoichi KonagataYasuo Hayashi
    • Shoichi KonagataYasuo Hayashi
    • H03K17/725H03K17/08H03K17/082H03K17/78H03K17/79H02H3/22
    • H03K17/79H03K17/0824
    • A solid state relay prevents the damage to photothyristor couplers when their performance characteristics vary slightly and enables phase angle control of an AC power supply using a less costly configuration than relays with photothyristor couplers having zero-crossing functions. The solid state relay includes a pair of input terminals configured to receive a control signal, a pair of output terminals configured to be connected to an AC power supply, a thyristor in parallel to the pair of output terminals configured to switch the AC power supply in response to the control signal. The solid state relay further includes two photothyristor couplers, each having a photothyristor, that are connected in series at a midpoint connection. The two photothyristor couplers are connected in parallel to the thyristor and are configured to control the thyristor. The solid state relay further includes two surge arresters connected in series at a midpoint connection that is connected to the photothyristor midpoint connection. The two surge arresters are connected in parallel to the pair of output terminals and are configured to block excessive voltage levels.
    • 当固态继电器的性能特性略有变化时,固态继电器可以防止对光闸晶体管耦合器的损坏,并且使用具有过零功能的光闸晶体管耦合器的继电器,可以使用成本较低的配置来实现交流电源的相位角控制。 固态继电器包括一对被配置为接收控制信号的输入端子,被配置为连接到交流电源的一对输出端子,与构成为将AC电源切换的一对输出端子并联的晶闸管 响应控制信号。 固态继电器还包括两个光闸晶体管耦合器,每个光闸晶体管耦合器具有光闸晶体管,它们在中点连接处串联连接。 两个光闸晶体管耦合器并联连接到晶闸管,并被配置为控制晶闸管。 固态继电器还包括两个电涌放电器,它们连接在连接到光闸晶体管中点连接处的中点连接处。 两个避雷器并联连接到一对输出端子,并且被配置为阻挡过高的电压电平。