A power supply without electrolytic capacitor

A technology of power supply and capacitor, applied in the field of power supply, can solve the problems of life limit of power supply, failure of electrolytic capacitor, etc., to achieve the effect of increased service life and low cost

A technology of power supply and capacitor, applied in the field of power supply, can solve the problems of life limit of power supply, failure of electrolytic capacitor, etc., to achieve the effect of increased service life and low cost

CN102300352AInactive Publication Date: 2011-12-28DONGGUAN VERSAILLES LIGHTING
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  • A power supply without electrolytic capacitor
  • A power supply without electrolytic capacitor

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing and embodiment, as figure 1 Shown is the circuit structure diagram of the non-electrolytic capacitor of the power supply of the present invention. A power supply without electrolytic capacitor includes a rectifier, a filter, a loop detection device, a diode, a triode amplifier, an inductor, a power manager and an LED. The input end of the rectification device is connected to the input end of the power supply; the output end of the rectification device DB1 is divided into two paths, one path is connected to the isolation diode D1 and the filter, and the output ends of the filter are respectively connected to the power manager U1 The first pin Vin of the LED is connected to the cathode of the LED; the other is connected to the loop detection device (R7, R8, C7), the triode amplifier, the power manager U1, the diode D2, the freewheeling inductor T1 and the anode of the LED in sequ...

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Abstract

The invention discloses a power supply without an electrolytic capacitor, which includes a rectifying device, a filter, a loop detection device, a diode, a triode, an inductor, a power manager and an LED. The invention provides a power supply suitable for driving LEDs, which breaks through the limitation of short service life of electrolytic capacitors and greatly increases the service life of products.

Description

technical field [0001] The invention relates to a power supply, in particular to a power supply without an electrolytic capacitor. Background technique [0002] Traditional power supplies require electrolytic capacitor filtering at both the input and output ends. The electrolytic capacitor fails due to the dry electrolyte, and the service life of the power supply is limited. [0003] Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a power supply, especially a power supply without an electrolytic capacitor. [0005] The technical solution adopted by the present invention to solve the technical problem is: a power supply without electrolytic capacitors, including rectifiers, diodes, filters, loop detection devices, triode amplifiers, inductors, power managers and LEDs; [0006] The input end of the rectification device is connected to the input end of the power su...

Claims

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Application Information

Patent Timeline
28 Dec 2011
Publication
CN102300352A
IPC
H05B37/00; H05B37/02
Inventors
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