power adapter internation power adapter hs code 4485

Each AC adapter has a specific power rating, measured in volts or watts that it can handle and output to an electronic device. Because the power rating and type of plug on the end is not universal the AC adapter can only be used with devices with the same requirements and connector. Our factory have Sold millions of this item power adapter products for LED lighting, since our inception-Each and every product is UL, CE, RoHS, and FCC certified.We only use the highest quality parts,Worldwide shipping-Each product is tested before packaging Affordable.We sell directly to consumers to ensure they always receive the best price possible.We offer Free Shipping in most purchases-We have a dedicated international sourcing team.Originally, most AC/DC adapters were linear power supplies, containing a transformer to convert the mains electricity voltage to a lower voltage, a rectifier to convert it to pulsating DC, and a filter to smooth the pulsating waveform to DC, with residual ripple variations small enough to leave the powered device unaffected. Size and weight of the device was largely determined by the transformer, which in turn was determined by the power output and mains frequency. Ratings over a few watts made the devices too large and heavy to be physically supported by a wall outlet. The output voltage of these adapters varied with load; for equipment requiring a more stable voltage, linear voltage regulator circuitry was added. Losses in the transformer and the linear regulator were considerable; efficiency was relatively low, and significant power dissipated as heat even when not driving a load.

FAQ

1, What kind of company we are?

    We are professional power supply manufacturer with high reputation in this field.

2, How we control the quality?
    Aging test for 8 hours, after then we put them into the market.

3, Can we accept samples customized?
    No problem for samples order, and welcome your testing before your big order.

4, What about the production capacity?
    1-2 days for samples order under 10pcs, 7 days for general order under 10000pcs.

5, OEM and ODM are available?
    Yes, we accept customized products.

6, Will the delivery time be long for a big order?
    No, we have two special parts in production line, one for samples orders, another for big orders.

7, What is our warranty service?
    For all products we sell have 2 years warranty.