Look out T8 lamp exporters do not step on the patent mines

Exports of North American T8LED lamps, many of which are fully compatible with two terminal power supply solutions.

To do this kind of electronic engineers who want to pay attention to: the power supply of such products, there are patent mines.

Today, the United States Patent US8729809, Voltage regulating in lamps with multiple power devices sources LED". The patent by the United States DeNovo Lighting company, in December 22, 2009 to apply for, in May 20, 2014 the United States Patent invention.

The core requirements of the principal claim of the patent are as follows (from the original text):

Both ends of the lamp have a pair of L/N power, as shown in the following figure, the left side of the pin 1 and pin 2 for a pair, the right side of the pin and pin 4 for a pair of.

At least one driver circuit is used for rectification after pin 1 and pin 2.

Between pin 1 and pin 2, between pin 1 and pin 4, between pin 2 and pin 3, between pin 3 and pin 4, are connected to a step-down electronic component (figure on the figure number 130).

If your T8LED is using a non isolated power supply rectifier bridge, see this picture is a bit familiar.

If you look familiar, products exported to North America may have touched their scope of patent protection.

DeNovo Lighting has issued a lawyer's letter to a number of T8LED product retailers in the United states.

T8LED products exported to North American enterprises, should pay attention to avoid early!

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