I buy LED lamp light moving light and shade is how to return a responsibility
Electricity ports poor contact, the ends out then plugged up.
Use this kind of desk lamp and your intention, originally is for energy saving eye, in the end it may hurt your eyes, it is recommended that you immediately change other brand of high quality the desk lamp that shield an eye, when choosing comparison and observation, the most basic points, 1, there cannot be any flicker; 2, light color must be pure white; 3, the mi live eyes LED luminous tube array, all brightness light-emitting tube must be consistent; 4 hand touch LED parts, can not have obvious temperature rise. Otherwise it is inferior product.
LED lamp light (light shaking) generally there are two reasons: one is the direct use of alternating current drive, the lowest cost of this kind of desk lamp, it is only a current limiting resistor circuit and a set of leds, produce power frequency flicker is inevitable; Second, using the low cost of electronic transformer, circuit performance is not perfect, the LED drive power constant current effect is poor, in high frequency belch phenomenon, users will feel the light shake in light and shade
