LED Down lights

 When CS end has a size of VCS value, you should make the first stage op amp 's output increases, LED Lighting china so that the current I3 increases. Specific analysis , because the size of certain I4 and I5 , then the voltage drop on the resistor R4 must , CS terminal voltage increases after VCS , R4 also increases the voltage on the VCS, R5 should also increase the voltage on the VCS. This requires R5 on current increases VCS/R5,

Ceiling Light

 unchanged since I6 , you should make the inductor current I3 increase VCS/R5.VCS acting on a small sampling resistor voltage drop generated , VCS changes reflect changes in the inductor current , and change the size of VCS entirely proportional to the inductor current changes size. Suppose the sample resistance RS,

LED Down lights 

 the inductor current slope of K, then the slope of the I3 KRS/R5. Let the inductor current rise and fall slope respectively K1 and K2, respectively, corresponding to the slope of K1RS/R5 I3 and K2RS / R5. current superposition module from the MP10, MP11, R3 and Q3 components. As can be seen from Figure 2 , VSLOPE than high voltage on the capacitor C1 a VBE, which has dropped in Figure 3 , after a VBE effect on R2, equal to the voltage on the capacitor C1 directly on the resistor R2 . With ( 2), m1 is the slope of the current I2 :

LED Downlights

Compensated signal through Q3 VBE uplift generated after RAMP signal is input to the PWM, the output of the error amplifier compares .

2.3 Error Amplifier