TRIAC dimmer light circuit with dual time constant

In order to solve the lag and light transition phenomena, it can use the Triac dimming light circuit shown in the figure with dual time constant. The circuit increases R3, C2 resistor-capacitor network, and the reducing charge on capacitor C1 can get promptly complement through C2, R2, R3 circuit, it can effectively reduce the lag and lighting transitions a..

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