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1. 发明专利

JPS5739428A Electric power supply device 失效
标题翻译：电力设备
公开(公告)号：JPS5739428A
公开(公告)日：1982-03-04
申请号：JP11517780
申请日：1980-08-21
申请人： Nippon Telegr & Teleph Corp , Showa Electric Wire & Cable Co Ltd
发明人： SAWA TAKASHI , HARADA MASAHARU , KASAHARA TOSHIO , NANBA KATSUAKI
IPC分类号： H02P7/06 , G05F1/56 , G05F1/595
CPC分类号： G05F1/595
摘要： PURPOSE:To reduce heat generation of a transistor and to make a device small in size, by inserting a resistor for heat generation sharing in parallel with a current adjusting transistor. CONSTITUTION:An AC electric power supply input from a power generator, etc. is received from a terminal 7, is rectified by a rectifying circuit 1, >=1 current adjusting transistors 2 and a current detection resistance 3 are connected in series, a DC output is obtained from a terminal 4, control voltage corresponding to an output current detected by said currnt detection resistance 3 is generated by a current controlling circuit 5, internal resistance of each current adjusting trnsistor 2 is increased or decreased, and a DC output of a constant current is obtained. In this case, the heat generation is shared by inserting a resistor 6 for heat generation sharing in parallel wth each current adjusting transistor 2. Accordingly, a transistor 2 having a small capacity can be used, and also the heat dissipation method for a resistor is much simpler than that of a transistor, therefore, a total cost of the electric power supply device is greatly reduced.
摘要翻译：目的：为了减少晶体管的发热并使器件体积小，可以通过插入一个与电流调节晶体管并联的发热共享电阻。构成：从端子7接收从发电机等输入的交流电源，由整流电路1进行整流，电流调节用晶体管2和电流检测电阻3串联连接，直流从端子4获得输出，由电流控制电路5产生与所述电流检测电阻3检测到的输出电流对应的控制电压，每个电流调节电阻2的内部电阻增加或减小，获得恒定电流。在这种情况下，通过在每个电流调节晶体管2上插入用于并联发热共享的电阻器6来共享发热。因此，可以使用具有小容量的晶体管2，并且电阻器的散热方法因此，比晶体管简单得多，电力供应装置的总成本大大降低。

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