Patent ID: 6101107
Filing Date: 2000-08-08
Classification: H02M,H03K,Y02B

Abstract:
Snubber circuit for connection across a first coupling element (DF) which can be influenced to conduct and not to conduct current and comprising a first serial circuit comprising a first capacitor (C1) and a first diode (D1), said first serial circuit being connected in parallel with the first coupling element, characterized by at least one second serial circuit connected in parallel with the first serial circuit and comprising a second capacitor (C2) and at least one second diode (D2), all capacitors forming a capacitive serial circuit in parallel with the first coupling element (DF) starting with the first capacitor (C1), the second capacitor (C2) being connected to the closest preceding capacitor in the capacitive serial circuit via a third diode (D3), such that when a voltage is applied across the first coupling element (DF) and this first coupling element is influenced not to conduct current, the capacitors (C1,C2) are charged in series, and when the first coupling element subsequently is influenced conduct current, the capacitors are discharged in parallel and the first coupling element starts to conduct once the capacitors are fully discharged.