Unlock instant, AI-driven research and patent intelligence for your innovation.

Conversion circuit between fluorescent ballast and led

A technology for fluorescent ballasts and conversion circuits, which is applied to semiconductor devices of light-emitting elements, light sources, electric light sources, etc., and can solve complex problems.

Active Publication Date: 2015-01-07
SIGNIFY HLDG BV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resonant network correction circuit has four inputs and four outputs and is coupled to two rectification circuits and is therefore relatively complex

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Conversion circuit between fluorescent ballast and led
  • Conversion circuit between fluorescent ballast and led
  • Conversion circuit between fluorescent ballast and led

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] exist figure 1 In , a mains input 100, a prior art fluorescent ballast 101 and a discharge lamp 102 are shown. The two outputs of the mains input 100 are coupled to the two inputs of the fluorescent ballast 101 . And the four outputs of the fluorescent ballast 101 are coupled to the four inputs of the discharge lamp 102 .

[0042] exist figure 2 In , a prior art fluorescent ballast 101 is shown in more detail. The fluorescent ballast 101 includes, for example, an electromagnetic induction filter 111 , a rectifier 112 , a power factor corrector 113 and a half bridge 114 including a resonant tank.

[0043] exist image 3 In , the fluorescent ballast 101, the conversion circuit 1 and the lighting circuit 2 are shown as separate modules. The lighting circuit 2 includes one or more light emitting diodes of any type and in any combination.

[0044] exist Figure 4 In , the fluorescent ballast 101 and the lighting circuit 2 are shown as separate modules, the fluorescen...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Conversion circuits (1)convert first signals coming from fluorescent ballasts (101)into second signals for light circuits (2)comprising light emitting diodes to replace discharge lamps (102). The conversion circuits (1) comprise input stages (11)with at least two inputs (21-24, 31-32) for receiving the first signals,output stages (13)with two outputs (71-72) for supplying the second signals, and reactive stages(12) for coupling the input and output stages(11, 13).Such relatively simple conversion circuits(1) are relatively low-cost and relatively robust. The reactive stages (12) comprise reactive circuits and reduce amplitudes of one or more of the first and second signals. The reactive circuits comprise one or more inductors (41, 42) and / or capacitors (43).The conversion circuits (1) may form part of the fluorescent ballasts (101) or may form part of the light circuits (2) or may partly form part of the fluorescent ballasts (101) and may partly form part of the light circuits(2).

Description

technical field [0001] The invention relates to a conversion circuit for converting a first signal from a fluorescent ballast into a second signal for feeding a lighting circuit via a rectifier circuit. The invention further relates to a fluorescent ballast, a lighting circuit and a method. [0002] Examples of such fluorescent ballasts are self-oscillating ballasts and fixed frequency ballasts as well as chip controlled ballasts. An example of such a lighting circuit is a lighting circuit comprising one or more light emitting diodes of any type and in any combination. Fluorescent ballasts are designed for feeding discharge lamps. When replacing a discharge lamp with a lighting circuit comprising one or more light emitting diodes without replacing the fluorescent ballast, a switching circuit should be introduced between the fluorescent ballast and the lighting circuit. Background technique [0003] US2011 / 0254465A1 discloses a light emitting diode drive circuit device wit...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B33/0809Y02B20/386F21K9/27Y10T29/49117Y02B20/30H05B45/3578H05B33/10
Inventor 陶海敏P·戴克希勒
Owner SIGNIFY HLDG BV