Power-supply arrangement

专利名称：Power-supply arrangement发明人：Rausch, Frederik申请号：EP87202650.5申请日：19871230公开号：EP0278128A1公开日：19880817

专利附图：

摘要：A flyback converter comprises the series arrangement of a primary winding (n₁),a transistor switch (S₁) and a resistor (R₁) between two input terminals (1, 2) for receivingan input voltage. The series arrangement of a secondary winding (n₂) and a diode (D₁) isarranged between the output terminals (3, 4) for connecting a load (M). The transistor

switch (S₁) is controlled by pulses from a pulse-width modulator (10), a sawtooth voltagegenerated by an oscillator (20) being applied to a first input (11) and a first feedbackvoltage being applied to a second input (12) via a control amplifier (40), which feedbackvoltage is proportional to the difference between a reference voltage from a referencesource (30) and a fraction of the output voltage, and a second feedback voltage equal tothe voltage across the resistor (R₁) being applied to said second input via a capacitor (C₁).

申请人：Philips Electronics N.V.

地址：Groenewoudseweg 1 5621 BA Eindhoven NL

国籍：NL

代理机构：Peters, Rudolf Johannes

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