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    • 3. 发明授权
    • Direct current stabilizing device
    • 直接电流稳定器件
    • US3978391A
    • 1976-08-31
    • US543046
    • 1975-01-22
    • Rene MigeonYves Legrand
    • Rene MigeonYves Legrand
    • G05F1/56G05F3/18H04M19/00G05F1/58
    • H04M19/00G05F3/18
    • Current stabilizing device constituted by a two-terminal network in series with a load to be fed. The two-terminal network comprises, in series between its two poles a regulating transistor and a resistor, the regulating transistor being controlled by the current collector of another transistor whose base current is controlled by the difference between a stabilized voltage taken at the terminals of a voltage stabilizing diode through which a current which is itself stabilized flows and the voltage drop across the resistor; several two-terminal networks may be connected together in series. The device is particularly applicable to the stabilization of the remote feeding current for repeaters in telephone cables which are not accessible, for example, submarine telephone cables.
    • 1461235自动电流控制COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 23 Jan 1975 [1974年1月24日] 2933/75标题G3R A串联晶体管电流调节器包括电流检测电阻和从电阻网络提供稳定电流的恒压二极管。 二极管通过第二晶体管和第二恒压二极管的基极集电极路连接到串联晶体管的基极。 第三晶体管的基极 - 发射极结连接在电流检测电阻和第一二极管的串联连接上。 如图所示,双终端网络2连接在中继电信线路中的直流源1和电阻负载3之间。 电流由电阻器5感测,电位器控制晶体管12的电导率,晶体管12进而控制串联晶体管4.参考电位由齐纳二极管10提供,齐纳二极管10从晶体管9接收恒流源, 电阻器7,11,13,14和第二齐纳二极管8.并联电阻器6限制串联晶体管4中消耗的功率,并且一对齐纳二极管17,18限制网络2上的总电压。二极管15, 16提供温度补偿。 如果使用高电源电压和/或低电阻负载,则所示类型的几个网络可以串联连接。