Power supply device used for illumination
A technology of capacitance and resistance, which is applied in the field of driving power supply circuit, can solve the problems of large loss of lighting appliances, reduce the waste of lighting appliances, and unstable power supply of lighting appliances, etc., and achieve the goals of prolonging service life, stabilizing power supply, and reducing loss Effect
Inactive Publication Date: 2019-06-07
李雄昭
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Problems solved by technology
[0002] The power supply of the existing lighting appliances is not very stable. When the circuit is turned on, the lighting appliances are prone to flickering. When the lighting appliances a
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[0011] 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 only some, not all, embodiments of the present invention. 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.
[0012] see figure 1 , in an embodiment of the present invention, a power supply device for lighting, including a DC power supply U, a switch S, a freewheeling diode D, an inductor L0, a transistor Q, and an emitter resistor Rt; wherein, the DC power supply U is connected to the switch S, and the switch S is connected to the positive terminal of the inductor L0, the negative terminal of the inductor L0 is connected to the positive pole of the LED lamp group, th...
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The invention discloses a power supply device used for illumination. The power supply device comprises a DC power source U, a switch S, a freewheeling diode D, an inductor L0, a triode Q and an emitter resistor Rt. The DC power source U is connected with the switch S, the switch S is connected with the positive wiring terminal of the inductor L0, the negative wiring terminal of the inductor L0 isconnected with the positive electrode of a LED lamp group, the negative electrode of the LED lamp group is grounded, and the negative wiring terminal of the inductor L0 is connected with one end of the resistor R2 at the same time; the other end of a resistor R1 is connected with one end of a capacitor C1, one end of a capacitor C3 is connected with the left end of the inductor L1; the capacitor C1 is connected in parallel with the capacitor C3, and common terminals of the capacitor C1 and the capacitor C3 are grounded; the right end of the inductor L1 is connected with the right end of the inductor L2 and one end of a capacitor C6. The power supply device used for illumination is stable for power supply, and cannot cause the flicker problem of an illumination device when the illuminationdevice is driven so as to reduce the loss of the illumination device and prolong the service life of the illumination device.
Description
technical field [0001] The invention relates to a driving power supply circuit, in particular to a power supply device for lighting. Background technique [0002] The power supply of the existing lighting appliances is not very stable. When the circuit is turned on, the lighting appliances are prone to flickering. When the lighting appliances are powered by an unstable power supply, the loss of the lighting appliances is large, and the long-term flickering will greatly reduce the power supply. Reduce the waste of lighting appliances. Contents of the invention [0003] The purpose of the present invention is to provide a filter driving power supply for LED with good filtering effect, simple structure, convenient use, reliable and stable LED driving power supply, so as to solve the problems raised in the above-mentioned background technology. [0004] To achieve the above object, the present invention provides the following technical solutions: [0005] A power supply devi...
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Inventor 李雄昭
Owner 李雄昭