A LED light source is, but is not a plug-in, the power supply is a similar phone charger that this kind of desk lamp belongs to direct current (dc) or an alternating current, will it be a stroboscopic?
Normal LED desk lamp not stroboscopic, this is decided by are rechargeable LED desk lamp power supply. 1, the common battery power, the power supply itself is no stroboscopic characteristics, driven by its leds stroboscopic may not happen. 2, use UBS power, UBS power is through the conversion of switch power supply dc voltage source, the voltage fluctuation is small, could not have caused the LED strobe. 3, using a dedicated dc power supply, its form has two kinds of current source and voltage source, are generally not switching power supply, stability is very good also, normally not stroboscopic. If it is found that the LED light stroboscopic explained the power supply circuit and fault, such as open circuit, LED lamp trouble light filtering capacitance.
A stroboscopic, stroboscopic degree depends on the quality of power supply. In theory, the desk lamp belongs to the direct current (dc), but after ac DianZhuan into dc, so after rectifying filtering, is not entirely direct current (dc), a part of ac harmonic superposition. Only in the battery as a power source is the real dc no stroboscopic LED light source, suggest using rechargeable LED lights.
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