This circuit is designed with a flyback chip with PFC function. It adopts a method of increasing the frequency and reducing the capacitance capacity, and the ripple is slightly larger, but it can meet the requirements of the LED driver.
I test: When the output voltage is 75V, the ripple is only 1V, which has little effect on the light decay of the LED lamp bead. The PF value is greater than 95% and the efficiency is greater than 88%.
Ceramic capacitor (ceramic capacitor);Ceramic condenser) is also known as porcelain capacitor or monolithic capacitors.As the name implies, ceramic dielectric vessel is a ceramic capacitor with dielectric material.According to different ceramic materials, this kind of capacitor can be divided into low-frequency porcelain dielectric vessel with capacity of 1-300 pF and high-frequency porcelain dielectric vessel with capacity of 300-22 000 pF.According to the structure type classification, can be divided into picture capacitor, tubular capacitor, rectangular capacitor, chip capacitor, piercing capacitor and so on.
Ceramic Capacitor,White Ceramic Capacitor,Smd Ceramic Capacitor,Multilayer Chip Ceramic Capacitor
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