Patent ID: 9699849
Date: 2017-07-04
CPC Classifications: H05B,Y02B

Claim:
1. A dimmable primary side regulated lighting drive circuit suitable for operation by any of trailing edge dimming, leading edge dimming or universal dimming, comprising following functions connected in succession starting from an input comprising: a. input terminals for connecting to a phase controlled dimming power line circuit and output terminals for connecting to a lamp, wherein the input terminals are connected to a common mode EMI filter, which is connected to a bridge rectifier unit with input and output terminals, which are connected to b. a phase control wave filter including an inductor, a resistor and a single diode, wherein the phase control wave filter is directly adjacent to a DC side of the bridge rectifier and containing the single diode, wherein the phase control wave filter is connected to a PI filter, wherein the wave filter has a single diode directly connected to the output terminal of the bridge rectifier.