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a dimmer

A dimmer and electrical connection technology, which is applied in the field of high-power and small-volume dimmers, can solve the problems of increased electromagnetic interference, increased heat generation of MOS tube switches, and restrictions on the design and manufacture of high-power and small-volume dimmers. Achieve the effect of increasing the input drive power

Active Publication Date: 2017-01-18
SELF ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the power of the dimmer increases, there will be two problems. One is that the heat generation will increase significantly, that is, the heat generation of the MOS tube switch will increase significantly, and the other is that the electromagnetic interference will also increase significantly. These factors restrict The design and production of high-power and small-volume dimmer

Method used

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Embodiment Construction

[0010] Specific embodiments of the present invention will be described in further detail below based on the accompanying drawings. It should be understood that the specific embodiments described here are only examples, and are not intended to limit the protection scope of the present invention.

[0011] see figure 1 and figure 2 , which is a circuit block diagram and circuit principle diagram of a dimmer 100 provided by the present invention. The dimmer 100 includes a power module 10, a shaping circuit module 11 electrically connected to the power module 10, an intelligent driving circuit module 12 electrically connected to the shaping circuit module 11, and an intelligent driving circuit module 12 electrically connected to the intelligent driving circuit. A switch circuit module 13 electrically connected to the module 12, a load 14 electrically connected to the switch circuit module 13, a signal input module electrically connected to the shaping circuit module 11 and provi...

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Abstract

A dimmer comprises a power source module and a switch circuit module electrically connected with the power source module. The switch circuit module comprises at least one MOS (metal oxide semiconductor) tube and an intelligent driving circuit module electrically connected between the power source module and the switch circuit module, and the intelligent driving circuit module comprises a negative temperature coefficient thermosensitive resistor, a first resistor and a second resistor. The negative temperature coefficient thermosensitive resistor is arranged, and output resistance of the intelligent driving circuit module is decreased when temperature of the MOS tubes is increased or increased when temperature of the MOS tubes is decreased, so that input driving power is improved when switch converting speed of the MOS tubes is too slow, input driving power is lowered when switch converting speed of the MOS tubes is too high, the input driving power reaches a balance value finally, and the switch converting speed of the MOS tubes also reaches a balance value which enables the dimmer to pass EMC tests and reach temperature requirements.

Description

technical field [0001] The invention relates to a power supply device, in particular to a dimmer suitable for high power and small volume. Background technique [0002] In general daily life, various lighting devices can be seen everywhere, for example, fluorescent lamps, street lamps, table lamps, art lamps and the like. Among the above-mentioned lighting devices, traditionally most of them use tungsten filament bulbs as light sources. In recent years, light-emitting diodes (LEDs) have been used as a source of light due to advances in technology. What's more, in addition to lighting equipment, for general traffic signs, billboards, car lights, etc., light-emitting diodes are also used as light-emitting light sources instead. As mentioned above, the advantage of using light-emitting diodes as a light source is that it saves power and has higher brightness, so it has gradually become popular in use. [0003] With the popularity of LED lamps, LED lamps are used in more and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
CPCY02B20/40
Inventor 王其明吴东林万炯
Owner SELF ELECTRONICS CO LTD