公开(公告)号：US06172494B2

公开(公告)日：2001-01-09

申请号：US09500663

申请日：2000-02-09

Applicant: Markus Feuser

Inventor： Markus Feuser

IPC: G05F140

CPC classification number: G06K19/073 ,  G05F5/00

Abstract: A circuit arrangement for delivering a supply current for an electronic circuit from a supply voltage source has a controllable current source arrangement which can be switched over so as to deliver a first and a second predetermined constant current. The second constant current is larger than the first constant current. An input of the controllable current source arrangement is connected to the supply voltage source and an output of the controllable current source arrangement is connected to an energy storage element and to the electronic circuit. The circuit arrangement further has a first reference voltage source for preparing a first and a second reference voltage. The second reference voltage is higher than the first reference voltage. The circuit arrangement still further has a comparison arrangement for comparing a supply voltage, produced in the electronic circuit and the energy storage element by the supply of the supply current, with the first and the second reference voltage and for switching over the current source arrangement to the first constant current when the supply voltage exceeds the second reference voltage and to the second constant current when the supply voltage is lower than the first reference voltage.

Abstract translation: 用于从电源电压源传送用于电子电路的电源电流的电路装置具有可控的电流源装置，其可以切换以便传送第一和第二预定的恒定电流。 第二恒定电流大于第一恒定电流。 可控电流源装置的输入连接到电源电压源，可控电流源装置的输出端连接到能量存储元件和电子电路。 电路装置还具有用于准备第一和第二参考电压的第一参考电压源。 第二参考电压高于第一参考电压。 电路装置还具有比较装置，用于将电子电路中产生的电源电压和通过供给电流的电能存储元件与第一参考电压和第二参考电压进行比较，并将当前源装置切换到 当电源电压低于第一参考电压时，当电源电压超过第二参考电压时的第一恒定电流和第二恒定电流。