Electronic ballast and detection circuit thereof for abnormal fluorescent tube
A technology of electronic ballasts and fluorescent tubes, which is applied in the innovative field of abnormal detection circuits, can solve the problems of poor consistency of protection performance, inability to reliably solve partial rectification effects, etc., and achieve the effect of realizing abnormal protection functions
Active Publication Date: 2013-09-04
深圳市垅运照明电器有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The protection performance of the products designed in this way is very poor in consistency, and is also greatly affected by different types of fluorescent tubes, so it cannot reliably solve the partial rectification effect
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0025] The electronic ballast provided by the present invention is as figure 1 , figure 2 As shown, the electronic ballast includes a detection circuit for when the fluorescent tube is abnormal, and the detection circuit includes a detection transformer 200 , a rectification circuit 300 and a protection circuit 600 . In order to realize the detection of the partial rectification effect of the fluorescent lamp by the electronic ballast, the detection transformer 200 includes three windings, which are respectively two primary windings T2a (ie figure 2 T2a), T2b (ie figure 2 T2b in) and secondary winding T2c (ie figure 2 T2c in ). The two primary windings T2a and T2b of the detection transformer are respectively connected in series in t...
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
Login to View More Abstract
The invention discloses an electronic ballast and detection circuit thereof for abnormal fluorescent tube, wherein, includes a detection transformer, a rectifier circuit and a protection circuit; two primary windings of the detection transformer are respectively conncted in series with power supply circuit on two ends of the fluorescent tube, one end of the secondary winding of the detection transformer is connected with one end of the rectifier circuit, the other end of the secondary winding is connected grounding; the other end of the rectifier circuit is connected with input end of the protection circuit. When the electronic ballast is in abnormal situation, the detection transformer can produce an induced voltage which is sent to the protection circuit after processing by rectifier filter etc, then problem of protecting the electronic ballast when partial rectifier effect is appeared in fluorescent tube is solved effectively, and abnormal protection function of the electronic ballast is implemented.
Description
technical field [0001] The invention relates to an electronic ballast for fluorescent lamps, in particular to the innovation of an abnormal detection circuit of the electronic ballast for fluorescent lamps. Background technique [0002] The abnormal situation of the existing electronic ballast has the following five states, which are: the fluorescent tube is not connected; one end of the fluorescent tube is damaged so that the lamp cannot be started; the two ends of the fluorescent tube are intact but cannot be started. (deactivation state); electronic ballast output terminal short circuit state; the fluorescent tube can still work, but one of the two ends of the fluorescent tube has been deactivated or damaged. [0003] At this stage, general electronic ballasts already have abnormal state protection circuits, thus avoiding various safety faults of fluorescent tubes and ballasts. The first four abnormal states mentioned above can all be resolved very well. [0004] The fi...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H05B41/298
Inventor 蔡锐茂刘雄
Owner 深圳市垅运照明电器有限公司