Battery powered electronic counter
    2.
    发明授权
    Battery powered electronic counter 失效
    电池供电电子柜台

    公开(公告)号:US4304988A

    公开(公告)日:1981-12-08

    申请号:US62346

    申请日:1979-07-31

    CPC分类号: H03K21/00 H03K21/02 H03K21/38

    摘要: A battery powered electronic counter with an electronic accumulator (12), a switch (22) for resetting the accumulator (12) and disconnecting the battery (20), and an accumulator indexing circuit with a first pair of switch input terminals (28) having separate high and low impedance connections to the battery (2) for minimizing battery drain and reducing input signal noise sensitivity, a second pair of AC/DC input terminals (30) for receiving an input pulse of up to 250 volts and a transistor circuit with a transistor (74) and a resistor (76) for limiting the current through an optical isolator (68) for the AC/DC terminals (30).

    摘要翻译: 一种具有电子蓄能器(12)的电池供电的电子计数器,用于复位蓄能器(12)并断开电池(20)的开关(22)以及具有第一对开关输入端子(28)的蓄电池分度电路, 与电池(2)分开的高阻抗和低阻抗连接,用于最小化电池漏极和降低输入信号噪声灵敏度;第二对AC / DC输入端子(30),用于接收高达250伏特的输入脉冲;以及晶体管电路, 用于限制通过用于AC / DC端子(30)的光隔离器(68)的电流的晶体管(74)和电阻器(76)。