Lighting circuit for electrical maintenance with emergency power supply
A power supply circuit and emergency power supply technology, which is applied in the direction of electric lamp circuit layout, electric light source, lighting device, etc., can solve the problems of low circuit efficiency, low applicability, and large power consumption of current limiting resistors, so as to enhance applicability and prolong life , the effect of improving efficiency and performance
Active Publication Date: 2018-01-16
STATE GRID CORP OF CHINA +1
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Problems solved by technology
[0002] In recent years, the problems of environmental pollution and energy shortage have become prominent. As a new energy-saving form, LED lighting is very popular because of its high electro-optical conversion efficiency, energy saving and environmental protection, and long life. When the voltage of the power supply is relatively high, the current-limiting resistor will consume a lot of power, and the circuit efficiency is low. When the voltage of the power supply drops, the current flowing through the LED lamp in the circuit will drop accordingly. The driving circuit is generally Simple resistor-capacitor step-down or constant voltage drive has disadvantages such as low efficiency, poor performance, and low applicability. Moreover, when the LED power supply is abnormal and disconnected, the entire LED system will not work normally.
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[0012] Such as figure 1 As shown, the lighting circuit for power maintenance with emergency power supply includes: a power supply circuit 1, a driving circuit 2 and a lighting load circuit 3, and also includes an emergency power supply circuit 4. The driving circuit 2 includes an anti-shock circuit 5, a soft Start circuit 6, oscillation circuit 7, amplifying circuit 8 and buck-boost circuit 9, the input end of described anti-shock circuit 5 is connected with the output end of power supply circuit 1, the output end of described anti-shock circuit 5 is connected with soft start circuit 6 The input end of the soft start circuit 6 is connected to the input end of the oscillation circuit 7, the output end of the oscillation circuit 7 is connected to the input end of the amplifier circuit 8, and the output end of the amplifier circuit 8 is connected to the booster The input end of the step-down circuit 9 is connected, the output end of the step-down circuit 9 is connected with the p...
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The invention provides a lighting lamp circuit with an emergency power for electrical power overhaul, belonging to the technical field of lighting lamps. The solved technical problem is that the invention provides the lighting lamp circuit with an emergency power for electrical power overhaul, the lighting lamp circuit has soft-start and anti-shock ability and a voltage boost and step-down circuit, and when an LED is failed, the circuit still can work normally. The employed technical scheme is that the lighting lamp circuit comprises a power supply circuit, a driving circuit and a lighting lamp circuit load circuit, and the driving circuit comprises an anti-impact circuit, a soft-start circuit, an oscillator, an amplifying circuit and a voltage boost and step-down circuit. The lighting lamp circuit is used in the lighting field.
Description
technical field [0001] The invention relates to a lighting lamp circuit for electric power maintenance with an emergency power supply, belonging to the technical field of lighting lamps. Background technique [0002] In recent years, the problems of environmental pollution and energy shortage have become prominent. As a new energy-saving form, LED lighting is very popular because of its high electro-optic conversion efficiency, energy saving, environmental protection, and long life. When the voltage of the power supply is relatively high, the current limiting resistor will consume a lot of power, and the circuit efficiency is low. When the voltage of the power supply drops, the current flowing through the LED lamp in the circuit will decrease accordingly. The driving circuit is generally Simple resistor-capacitor step-down or constant voltage drive has disadvantages such as low efficiency, poor performance, and low applicability. Moreover, when the LED power supply is abnorm...
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IPC IPC(8): H05B37/04
Inventor 孟丹赵莉莉郭建栋贺亮郑强
Owner STATE GRID CORP OF CHINA