25A 300W 12V Power Supply LED Driver Light Box LED Display Signboard 50Hz 60Hz

12V LED Driver 300W 25A Light Box Led Display Signboard 50|60Hz LED Power Supply

Quick Detail:

• Indoor type aluminum mini size housing package
• AC/DC switching 12V 300W 25A single-switch LED driver
• AC input voltage: 90-130V or 170-250V
• 1600V High voltage test, full loading test and old aging test
• Constant voltage driver apply for LED light strip, LED module, light piece, light box, LED signboard light.
• CE, ROHS approval
• Unit Size: 21.4*11.4*5.0CM
• Unit Weight: 809g

Description:

All these products adopt PWM high-frequency pulse width modulation technology, mature standardized production, strict 100% load-carrying aging, high and low voltage impact experiments and complete test records for development & production of LED driver through strictly quality control system and highly responsible attitude, thus have a good quality feedback during application.

12V Indoor drivers models cover 12W, 24W, 38W, 50W, 60W, 72W,100W, 120W,150W,180W, 200W,240W, 300W, 360W,400W, 500W,600W,700W,800W,1000W and so. they are mainly used for LED light strip, LED module, light piece, light box, showcase light, lamp house, signboard light etc.

Specifications:

12V LED drivers related models list:

Applications:

Widely used in LED Lighting, LED display, LED strips, LED advertisement screen, LED sign, LED night light, LED lamp house, LED decoration, LED wall light, LED street light , LED wall light, LED backlight, LED tube, offices , hospital , schools , factories , plants, shopping malls, supermarkets, kitchen, fair cabinet and so on.

FAQ

1. How many kinds of led drivers do you produce?

A: We produce indoor IP20 type, rain proof IP54 type, waterproof IP67 type, ultra thin type, high power type.

2. For 12V series, how many models can you supply?

A: From 12W to 1000W, there are more than twenty models we can supply if only IP20 type, besides, we also supply IP54 and IP67 12V series.

3. Do you have CE, ETL approval?

A: Most of products have CE and ROHS, we also can supply ETL approval if necessary.

4. How about sample order?

A: Sample order is available

5. What about the lead time?

A: 3-5 days for Sample, 8-18 working days for mass production.

6. Which tests do you carry out in your factory?

A: We usually do overload test, 1600V high voltage test and 100% old age test.

7. What is MOQ for led driver?

A: MOQ usually is 500pcs.

8. How do you ship the goods and how long does it take to arrive?

A: We ship by sea, by railway, by air or by express.

9. How about the payment terms?

A: T/T is our mainly payment terms.

10. OEM and ODM is acceptable?

A: OEM or ODM is acceptable. We can rich experience in OEM and ODM for many years. But we also have our own brand.

11: Do you offer warranty period for the products as a part of after sale service?

A: Yes, we offer 3 years warranty.

12: How to deal with the defectives?

A:

Firstly, our products are produced under strict quality control system and the defective rate will be less than 0.3%.

Secondly, during the guarantee period, we will send new goods together with new order for small quantity.

Thirdly, for defective batch products, we will investigate into the true problems happened, find the real reasons and discuss the suitable solution including recall them based on real situation.

13. What is difference between constant voltage (CV) and constant current (CC) power supply

A: Power supply is a device that provides electric energy for the load. The power circuit is what converts input electric energy into the desired form and outputs what called "power circuit". Power circuit can be roughly divided "constant voltage power supply" and "constant current power supply".

Constant voltage power supply is power circuit that controls output voltage at a constant level. It always provides a constant voltage regardless of the load and is widely used as power supply for electronic circuits.

Classification of switching power supply

People in the field of switching power supply technology is the development of related power electronic devices and the development of switching frequency conversion technology, the two parts promote each other to promote switching power supply every year to more than two digit growth rate toward the direction development of light, small, thin, low noise, high reliability and anti interference. Switching power supply can be divided into two major categories of AC/DC and DC/DC, DC/DC converter has been module type with the design technology and production technology at home and abroad and it has been mature and standardized and has been recognized by users. AC/DC modular, however, because of its own feature, in the process of modularization, makes the technique and technology problems of manufacturing more complicated . The structure and characteristics of the two types of switching power supply are described as follows.

2.1 DC/DC conversion

DC/DC conversion is the conversion of a fixed DC voltage into a variable DC voltage, also known as DC chopper. Chopper working mode has two ways, one is pulse width modulation mode, TS is unchanged and TON(general) is changed, the second is frequency modulation mode, TON is unchanged, Ts is changed (easy to produce interference). The specific circuit consists of the following categories:

(1) Buck circuit -- buck chopper, whose output average voltage

(2) Boost circuit - boost chopper, its output average voltage

(3) Buck-boost circuit -- Buck or Boost chopper, which

(4) CUK circuit - step-down or boost chopper, its output average electricity

The above is the non-isolation circuit, the isolation circuit has forward circuit, fly back circuit, half bridge circuit, full bridge circuit and push-pull circuit.

2.2 AC/DC conversion

AC/DC transformer transforms AC into DC, and its power flow can be bidirectional. The power flow from power supply to the load is called "rectification", and the power flow from the load back to the power supply is called "active inverter". AC/DC converter input is 50/60Hz alternating current, because it must be rectified and filtering, so relatively large volume of filtering capacitor is essential, at the same time due to safety standards (such as UL, CCEE, etc.) and EMC directive restrictions (such as IEC, FCC, CSA), AC input side must add EMC filter and use components in accordance with safety standards , thus limiting the miniaturization of AC/DC power supply volume. In addition, due to internal high frequency, high voltage, large current switch action, It makes to increase difficulties of solving the problem of electromagnetic compatibility EMC, and because of the same reason of the request of high density installation circuit design, the high voltage and high current switches make power supply loss increased and limit the modularization process of AC/DC converter. Therefore, the optimization design method of power supply system must be adopted to make the efficiency of AC/DC converter reach a certain degree of satisfaction.

AC/DC transform can be divided into half-wave circuit and full-wave circuit according to the wiring mode of the circuit. According to the number of power supply, phase can be divided into single phase, three phase and multi phase. According to the circuit working quadrant, it can be divided into one quadrant, two quadrant, three quadrant and four quadrant.