A protective circuit and lighting equipment
A technology for protecting circuits and switching circuits, applied in the field of electronics, can solve problems such as damage to drive circuit components, affecting the normal use of lighting equipment, and potential safety hazards, and achieve the effect of preventing burnout
Active Publication Date: 2018-11-27
SHENZHEN OCEANS KING LIGHTING ENG CO LTD +1
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Problems solved by technology
[0002] The lighting source in the lighting equipment usually works under the driving of the driving circuit. When the driving circuit works, it corresponds to a threshold voltage. When the voltage of the power supply exceeds the corresponding threshold voltage of the driving circuit, it is easy to cause damage to the components in the driving circuit. Potential safety hazards, which in turn will affect the normal use of lighting equipment
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0034] The embodiments of the present invention can disconnect the drive circuit from the power supply when the voltage of the power supply exceeds the threshold voltage corresponding to the drive circuit, thereby protecting the drive circuit of the lighting source.
[0035] see figure 1 , figure 1 It is an embodiment of the present invention, a schematic diagram of a module structure of a lighting device including a protection circuit, and the light...
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An embodiment of the invention discloses a protection circuit and a piece of lighting equipment. The protection circuit is connected between a power supply and a driving circuit; the protection circuit comprises a switch circuit and a control circuit, wherein the switch circuit is used for connecting or disconnecting the connection of the driving circuit and the power supply; a first end of the switch circuit is connected with the power supply; the second end of the switch circuit is connected with a first end of the control circuit; the control circuit is used for controlling the switch circuit to disconnect the connection of the driving circuit and the power supply when the voltage of the power supply exceeds a threshold voltage corresponding to the driving circuit; the first end of the control circuit is connected with the second end of the switch circuit; the second end of the control circuit is grounded; the first end of the control circuit is also connected with the input end of the driving circuit. According to the protection circuit disclosed by the embodiment of the invention, when the voltage of the power supply exceeds the threshold voltage corresponding to the driving circuit, the connection of the driving circuit and the power supply is disconnected, so that the driving circuit is protected.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to a protective circuit and lighting equipment. Background technique [0002] The lighting source in the lighting equipment usually works under the driving of the driving circuit. When the driving circuit works, it corresponds to a threshold voltage. When the voltage of the power supply exceeds the corresponding threshold voltage of the driving circuit, it is easy to cause damage to the components in the driving circuit. Potential safety hazards, which in turn will affect the normal use of lighting equipment. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present invention is to provide a protection circuit that can cut off the connection between the drive circuit and the power supply in time when the power supply voltage exceeds the corresponding threshold voltage of the drive circuit. [0004] In order to solve the above tech...
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IPC IPC(8): H02H3/20H05B37/02
Inventor 周明杰杨超慧
Owner SHENZHEN OCEANS KING LIGHTING ENG CO LTD