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Controller for inserting signaling transitions onto line voltage

A controller, line voltage technology, applied in the field of controllers, can solve problems such as difficulty in meeting power factor and total harmonic distortion, limited dimming percentage, and complex hardware

Inactive Publication Date: 2015-09-23
SIGNIFY HOLDING B V
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to meet power factor and total harmonic distortion (THD) requirements with these dimming schemes
Dimming percentages are limited, and the hardware required to implement these schemes is complex

Method used

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  • Controller for inserting signaling transitions onto line voltage
  • Controller for inserting signaling transitions onto line voltage
  • Controller for inserting signaling transitions onto line voltage

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Embodiment Construction

[0027] In the following detailed description, for purposes of explanation and not limitation, representative embodiments disclosing specific details are set forth in order to provide a thorough understanding of the present teachings. However, it will be apparent to persons skilled in the art having the benefit of this disclosure that other embodiments in accordance with the present teachings that depart from the specific details disclosed herein are within the scope of the appended claims. Moreover, descriptions of well-known devices and methods may be omitted so as not to obscure the description of the representative embodiments. Such methods and apparatus are clearly within the scope of the present teachings.

[0028] figure 1 An exemplary embodiment of a lighting system including a controller to control dimming levels of lighting units is illustrated. Lighting system 10 includes an AC line source 100 connectable to a plurality of lighting units 120-1 and 120-2 and to cont...

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Abstract

A controller connected to a line voltage, includes an auto-transformer that provides a nominal line voltage at a first end terminal and a signaling voltage at a transformer tap. A first switch has a first switch terminal connected to the first end terminal of theauto-transformer, and a second switch terminal connected to an output node of the controller. A second switch has a first switch terminal connected to the transformer tap of the auto-transformer, and a second switch terminal connected to the output node. A switch controller is configured to output first and second switch signals responsive to a control signal, to control the first and second switches to insert signaling transitions onto the line voltage by selectively connecting the nominal line voltage at the first end terminal and the signaling voltage at the transformer tap to the output node.

Description

technical field [0001] The present invention is generally directed to a controller for inserting signaling transitions onto line voltage. More particularly, various inventive arrangements disclosed herein relate to controllers and lighting systems for inserting signaling transitions onto line voltage to control dimming levels of lighting sources. Background technique [0002] Many lighting applications utilize dimmers. Available via standard control interfaces such as Digital Addressable Lighting Interface (DALI), Digital Multiplexed (DMX) interface or 0-10V dimming interface or through solutions such as leading and trailing edge dimming schemes and power line communication schemes The line side control method to achieve dimming. While well established, each of these interfaces and schemes has limitations and undesirable properties. [0003] For example, control interface standards such as DALI, DMX or 0-10V require installation of control lines in addition to power lines...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B37/02H05B41/392H05B44/00
CPCY02B20/42H05B33/0845H05B37/0281H05B41/3927H03K17/56H05B45/10H05B47/16Y02B20/40H05B47/19H05B45/37H05B45/60H05B47/185
Inventor A.D.斯罗特里亚N.希拉斯
Owner SIGNIFY HOLDING B V
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