LED (Light-Emitting Diode) lamp and electronic breaker thereof

A technology for LED lamps and circuit breakers, which is applied in the direction of protection against overcurrent, measurement using digital measurement technology, etc., and can solve problems such as inapplicability and protection

Active Publication Date: 2014-10-01
OCEANKING DONGGUAN LIGHTING TECH +2
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0002] Traditional mechanical thermal circuit breakers are far from be

Method used

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  • LED (Light-Emitting Diode) lamp and electronic breaker thereof
  • LED (Light-Emitting Diode) lamp and electronic breaker thereof

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Embodiment Construction

[0038] Those skilled in the art understand that those skilled in the art can implement the variation example in combination with the prior art and the foregoing embodiments, which will not be repeated here. Such variations do not affect the essence of the present invention, and will not be repeated here.

[0039] figure 1 According to a specific embodiment of the present invention, a schematic circuit diagram of an electronic circuit breaker with a current detection function suitable for LED lamps of the present invention is shown. Such as figure 1 As shown, the present invention provides an electronic circuit breaker with current detection function suitable for LED lamps, which is connected in series to the power input terminal V IN Between it and the LED lamp 7 , it includes a current detection chip 1 , a field effect transistor 4 , a resistor divider network and a sampling resistor 2 . The source of the field effect transistor 4 is coupled to the power input terminal V ...

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Abstract

The invention provides an LED (Light-Emitting Diode) lamp and an electronic breaker thereof. The electronic breaker is connected in series between a power supply input end and the LED lamp, and comprises a sampling resistor, a field effect transistor and a current detection chip, wherein one end of the sampling resistor is coupled with the LED lamp; a source electrode of the field effect transistor is coupled with the power supply input end; a grid electrode of the field effect transistor is coupled with the other end of the sampling resistor; the current detection chip comprises a current detection amplifier and a voltage comparator; two detection pins of the current detection amplifier are coupled with the two ends of the sampling resistor respectively; an output pin of the current detection amplifier is coupled with an LED alternating-direct (AD) current conversion port, and earthed by a resistance voltage-dividing network; and a locking output pin of the voltage comparator is coupled with a drain electrode of the field effect transistor. The electronic breaker limits current on the LED lamp, timely disconnects a power supply and a load in case of overcurrent, and can detect real-time working current of an LED.

Description

technical field [0001] The invention relates to the field of electronic circuit breakers, in particular to LED lamps and electronic circuit breakers thereof. Background technique [0002] Traditional mechanical thermal circuit breakers are far from being suitable for protecting LEDs in terms of response time and accuracy. Therefore, the present invention designs an electronic circuit breaker suitable for LED lamps, and at the same time, the circuit breaker can provide the current parameters of LEDs in real time. [0003] Chinese patent publication number: CN201726097U discloses a circuit breaker with current change detection and control functions. It is connected with a current transformer, a rectification filter, an MPU single-chip microcomputer, an AC contactor, an audible and visual alarm device, a breaking current value setting device, and a current increasing breaking value setting device in an insulating casing. The breaking current of the circuit breaker and the val...

Claims

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Application Information

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IPC IPC(8): H02H3/08G01R19/25
Inventor 周明杰林锦旭
Owner OCEANKING DONGGUAN LIGHTING TECH
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