专利名称：Current alimentation circuit for a digital
calculation circuit
发明人：ADAMS, JUERGEN, DIPL.-ING.申请号：EP96103439.4申请日：19960306公开号：EP0734906B1公开日：20011121
摘要：The circuit arrangement supplies current to the digital computer circuit via atleast one control input. The computer circuit has a current use in the range of severalmilliamps. The functioning in a known voltage range e.g. between 2 and 6 volts isguaranteed. A buffer battery between the two supply lines (UB and GND) is used as areference voltage. To recognise when it is operating at low voltage, the direction of thebattery current is determined. This can be determined by a transistor (29) with asemiconductor diode (28) in antiparallel with its emitter base path. The buffer batterymay be charged by the base emitter current of the transistor used to detect thedirection of the battery current. The charge current may be limited by the couplingresistance of the circuit arrangement. This may be a temp. dependent resistor.
申请人：MANNESMANN VDO AG,MANNESMANN VDO AG,MANNESMANN VDO AG
地址：DE
国籍：DE
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