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1. 发明授权

US4523251A Electronic apparatus comprising an input stage with a binary output connected to a relay control circuit 失效
标题翻译：电子设备包括具有连接到继电器控制电路的二进制输出的输入级
公开(公告)号：US4523251A
公开(公告)日：1985-06-11
申请号：US425217
申请日：1982-09-28
申请人： Jurgen Erdmann , Karl O. Buchholz , Hartmut Knappe
发明人： Jurgen Erdmann , Karl O. Buchholz , Hartmut Knappe
IPC分类号： H01H47/32
CPC分类号： H01H47/325 , Y10T307/878
摘要： An electronic apparatus has an input stage (11) with a binary signal output (19). This signal output is connected to a relay control circuit which deenergizes or energizes the relay (15) in dependence on the output signal (0 or 1). The relay (15) can be held in the energized condition over a wide voltage range, without being overloaded, by a periodically limited energizing current. This is achieved, by way of example, by energizing the relay via a semiconductor switching device (transistor 14) which can be switched on and off by a Schmitt trigger (12) connected to the binary signal output. A capacitor (17) charged in dependence on the energizing current flowing through the relay is used to override the signal from the binary output (19) to switch the transistor (14) via the Schmitt trigger (12) so as to periodically energize the relay (15) (FIG. 1).
摘要翻译：电子设备具有具有二进制信号输出（19）的输入级（11）。该信号输出连接到继电器控制电路，该继电器控制电路根据输出信号（0或1）去激励或激励继电器（15）。继电器（15）可以通过周期性限定的通电电流在宽电压范围内保持在通电状态，而不会过载。这通过示例的方式通过经由可连接到二进制信号输出的施密特触发器（12）接通和断开的半导体开关器件（晶体管14）激励继电器来实现。使用依赖于通过继电器的激励电流进行充电的电容器（17）来覆盖来自二进制输出（19）的信号，以经由施密特触发器（12）切换晶体管（14），以周期性地给继电器（15）（图1）。

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