... competitive price 2:CE,ROHS, approvals 3:quick delivery 7W LED Power DriverHigh performance High power factor (PF): >0.9 High ... power efficiency: 75%-80% Good price1.High performance triacs dimming led power supply 2. Input voltage: 110V/220V 3. Power factor ... constant output current, low ripple. ensure the LED make use of security, stability ,improve LED lighting effect ,reduce optical decay 14. The ...