Illumination apparatus and power supply voltage management method thereof
A technology of lighting device and power supply voltage, applied in lighting device, lighting device parts, electric light source, etc., can solve problems such as increasing manufacturing cost, and achieve the effect of reducing manufacturing cost and simple structure
Inactive Publication Date: 2014-01-01
POLYTRONICS TECH
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Furthermore, from a manufacturing point of view, although lighting fixtures can be equipped with linear regulators of different specifications for different voltage requirements, this will also increase manufacturing costs
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[0041] In order to make the above-mentioned and other technical content, features and advantages of the present invention more obvious and understandable, the following specifically cites relevant embodiments, together with the attached drawings, for detailed description as follows:
[0042] Due to differences in power supply systems in various countries, the power supply voltages provided by each country are not the same, and even household voltages in the same country may also be different. For example, the general household is 120VAC, while the air conditioner uses 240VAC. Therefore, if the lighting device is connected to the wrong power supply voltage, it may cause insufficient brightness, or more seriously, cause the lighting device to burn out. The present invention provides a simple and effective solution to this problem.
[0043] figure 1 and figure 2 It is a schematic diagram of the lighting device according to the first embodiment of the present invention. The l...
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An illumination apparatus includes a rectifier, a linear regulator, a lighting unit and a temperature sensing control circuit. The rectifier is connected to an AC supply voltage. The regulator is electrically connected to the rectifier and is adaptive to a first voltage. The lighting apparatus and the regulator form a circuit coupled to the AC power supply. The lighting unit has first and second loads having respective first and second lighting components adaptive to the first voltage. The control circuit can effectively sense the temperature of the regulator and thereby determines whether the first and second load are connected in series or in parallel. If the supply voltage is the first voltage, the first and second load is connected in parallel. If the supply voltage is a second voltage greater than the first voltage, the temperature sensing control circuit switches the first and second load to be connected in series.
Description
technical field [0001] The present invention relates to a lighting device and a related power supply voltage application method, in particular to a lighting device applicable to different voltages and a power supply voltage application method thereof. Background technique [0002] The switch regulator (switch regulator) works in the switch state, and stabilizes the output voltage by adjusting the time ratio of turn-on and turn-off. It can flexibly realize different conversions of voltage size and polarity, and is suitable for applications where online linear regulators are not applicable. occasion. A good switching regulator design can achieve high conversion efficiency, but the circuit is relatively complex and there are switching noise problems. [0003] In a nutshell, a linear regulator works in a linear state, and adjusts its own internal resistance according to changes in the load to stabilize the output voltage. It can only do step-down conversion, the circuit is sim...
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IPC IPC(8): F21S2/00F21V23/00H05B37/02F21Y101/02
CPCH05B33/0812H05B33/0827Y02B20/42H05B37/02Y02B20/343H05B45/395H05B45/46Y02B20/30
Inventor 周道宏曾郡腾李品萱
Owner POLYTRONICS TECH