ETL TUV UL 72W 3000K LED wall panel light Triac dimmable trailing edge leading

ETL,TUV,UL 72W,3000K Triac dimmable trailing-edge,leading-edge Dimmable panel​

Trailing edge dimmers (as opposed to leading edge, or triac dimmers) turn off the electrical load at the end, or trailing edge, of the AC input waveform. They control the power to the load by varying the duty cycle (the ratio of on time to on+off time) of the voltage to the load, the same as leading edge or triac dimmers. Cutting off the trailing edge of the waveform allows compatibility with electric loads that are either resistive or capacitive in nature (as opposed to leading edge dimmers which are compatible with resistive and inductive loads). Trailing edge dimmers are more complex than other dimmers, and are usually implemented using back-to-back power FETs (n-channel enhancement-mode MOSFETS with their source terminals connected together, the gates connected together, and the drain terminals acting as the two power terminals). The FETs have an intrinsic body diode which means they always conduct in one direction. Putting two FETs together as described allows current flow to be controlled in either direction (with no gate signal, both FETs are off, and the body diodes allow no current flow either. If one FET is gated on, the current can flow through that FET and the body diode of the other FET).

Trailing edge dimmers are designed to fade the voltage to zero rather than switch it abruptly off, by applying a resistance to create a ramp rather than a "cliff." This greatly reduces interfering electrical and radio emissions. It also increases the amount of heat dissipated, since the resistive period generates heat. Most trailing edge dimmers contain thermal monitors that can adjust the ramp if too much heat is being generated.

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SHEN ZHEN ZLONE LIGHTING CO., LTD was established in 2008, is a rapid growing enterprise and now becomes one of the leading LED Light manufacturers and suppliers in China.

ZLONE has professional production process and professional techniques, equipped with advanced production equipment such as Surface Mounting Machine, Automatic Soldering Machine, Advanced testing machine and also built an IES dark room and a modern production workshop, which passed ISO9001:2008 quality management system certification.

ZLONE has also developed our own way of LED lighting Quality Inspection System, We apply advanced temperature testers, luminance testers and photoelectric instruments to conduct strict testing such as: voltage withstand, shock proof and erosion tests…ect. All our operations are international standard certified. Most of our products have got CE,ROHS,TUV,GS,ETL/UL approved and many other international certifications.

Our expert R&D team has abundant knowledge and experiences in electric components & LEDs, Dialux prototype, thermal management and industrial design.We’re capable of developing new models and complete a sample for you within 10-15working days. All designs strictly follow the UL and EU electrical safety standards and ERP Directive.

ZLONE has an excellent overseas sales and after-sales team .We export to South/ North America, Europe and Oceania. Our whole team will keep on providing the best service to our valued customers. We warmly welcome customers from domestic and abroad cooperate with us for mutual benefit and common development. 

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