CN203206557U - Efficient power supply for LED lamp tube - Google Patents

Abstract

The utility model discloses an efficient power supply for an LED lamp tube. The efficient power supply comprises a constant current controller and an isolation transformer, wherein an input end of the constant current controller is connected with the commercial power, and an output end thereof is connected with a primary coil of the isolation transformer; and a secondary coil of the isolation transformer is connected with an LED load. According to the efficient power supply for the LED lamp tube, the high-voltage input of the commercial power is isolated from the output by the isolation transformer, so as to avoid the risk of electric shock; and the efficient power supply has the advantages of high power conversion efficiency, low energy consumption, and small electromagnetic radiation.

Description

A kind of LED fluorescent tube efficient power

Technical field

The utility model relates to a kind of LED tube power, refers in particular to a kind of T8LED fluorescent tube efficient power.

Background technology

In the prior art, the power supply of LED fluorescent lamp generally all is that employing is built-in, and namely power supply can be placed on the fluorescent tube the inside.Built-in great advantage is to make the existing fluorescent tube of direct replacement, and need not original circuit is done any change.Therefore, built-in power supply is normally made strip, in order to fill in the semicircular fluorescent tube.And that the built-in power supply of prior art usually adopts is non-isolated, namely directly connects at LED load end and 220V input, therefore, touches the danger that load just has electric shock; Only have the isolation of the as thin as a wafer insulating barrier of aluminium base between 220V and the aluminum hull, usually be not easy by CE and UL authentication; And, exist conversion efficiency low, the shortcoming such as energy consumption is high, and electromagnetic radiation is large.

In view of the defects of the power supply of prior art LED fluorescent lamp, the present invention furthers investigate, and develops a kind of LED fluorescent tube efficient power that overcomes described defective, and this case produces thus.

Summary of the invention

The purpose of this utility model is to provide a kind of power supply conversion efficiency high, and energy consumption is low, and the little LED fluorescent tube efficient power of electromagnetic radiation.

For reaching above-mentioned purpose, solution of the present utility model is:

A kind of LED fluorescent tube efficient power comprises constant-current controller and isolating transformer, the input termination civil power of constant-current controller, the primary coil of output termination isolating transformer; The secondary coil of isolating transformer connects the LED load.

Further, isolating transformer is the power frequency isolating transformer, perhaps is high-frequency isolation transformer.

After adopting such scheme, when the utility model used, mains ac power supply 85-220V through constant-current controller, then passed through the low-power consumption isolating transformer through the access of AC power input wires, directly supplied with the LED lamp finally by the direct current output connection and used.The low-power consumption isolating transformer will be inputted and the output isolation, can avoid the danger of getting an electric shock; Its power factor (PF) is greater than 0.968, and power supply conversion efficiency is greater than 95%; And energy consumption is low, and electromagnetic radiation is little.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

Consult shown in Figure 1ly, a kind of LED fluorescent tube efficient power that the utility model discloses comprises constant-current controller 1 and isolating transformer 2.

The input termination civil power of constant-current controller 1, the primary coil of output termination isolating transformer 2; The secondary coil of isolating transformer 2 connects LED load 3.

Isolating transformer 2 can be the power frequency isolating transformer, also can be high-frequency isolation transformer.

When the utility model used, mains ac power supply 85-220V through constant-current controller 1, then passed through low-power consumption isolating transformer 2 through the access of AC power input wires, directly supplied with the LED lamp finally by the direct current output connection and used.

Low-power consumption isolating transformer 2 will be inputted and the output isolation, can avoid the danger of getting an electric shock; After adopting low-power consumption isolating transformer 2, the source conversion efficiency is high, and energy consumption is low, and electromagnetic radiation is little.

The above is preferred embodiment of the present utility model only, is not the restriction to this case design, and all equivalent variations of doing according to the design key of this case all fall into the protection range of this case.

Claims (2)

1. a LED fluorescent tube efficient power is characterized in that: comprise constant-current controller and isolating transformer, the input termination civil power of constant-current controller, the primary coil of output termination isolating transformer; The secondary coil of isolating transformer connects the LED load.

2. a kind of LED fluorescent tube efficient power as claimed in claim 1, it is characterized in that: isolating transformer is the power frequency isolating transformer, perhaps is high-frequency isolation transformer.