Light Box LED Drivers Power Supply 12V 12W 1A 90-250V For Light Strips

12V LED Driver 12W 1A Light Strips LED Module Light Box 90-250V LED Power Supply

Quick Detail:

• Indoor type aluminum mini size housing package
• AC/DC switching 12V 12W 1A single-switch LED driver
• AC input voltage: 90~250VAC
• 1600V High voltage test, full loading test and old aging test
• Constant voltage driver apply for LED light strip, LED module and so on
• IP20 grade
• CE, ETL approvals
• 3 Years Warranty
• Unit Size: 7.2*3.4*3.0CM
• Unit Weight: 75g

Description:

Our products are widely used in LED industrial project, communications power, aerospace, industrial control systems, posts communications, medical equipment and other industrial and commercial fields. 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 types mainly have many models-12W, 24W, 38W, 50W, 60W, 72W,100W, 120W,150W,180W, 200W,240W, 300W, 360W,400W, 500W,600W,700W,800W,1000W etc. they are mainly used for LED light strip, LED module, light piece, light box/lamp house, signboard light etc.

Specifications:

Notices:

1. Input voltage should be within the specified voltage range (for examples: input voltage 220VAC).

2. Prohibited to be used in the high temperature environment, power port is the thermal vents, wind 50CM range, please do not place other objects, make sure that the power should have good thermal dissipation space environment.

3. Prohibited to install power supply in the presence of flammable materials (such as wood products, flammable plastic, etc), to stay away from petrol stations or where prohibited Fireworks.

4. Accurate calculation of load power, peak use, suggested user to use power supply based on power 80% load, do not overload.

5. Power supply have built-in short circuit protection function, when output short circuit, the power will automatically enter the status. Power off after 1 minute and then power on.

6. For safety, properly grounded, the output power cable must be ≥2.5mm²

7. Strictly in accordance with the position indicated by the output terminals of the power supply. It must be firm, check the output line and prohibited to be reversed (input "220VAC" main line, output "+" loaded for positive cathode, output "-" load for negative cathode).

8. Before power, check that the line voltage is compatible with the operating voltage with multimeter (voltage: 220VAC) recognized before it can be closed.

9. Power firm installed vertically (vertically in a place easy to wire the power supply, cover to cover, to be water proof)

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.

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.

Today's soft switching technology makes DC/DC have a qualitative leap, VICOR designed and manufactured of a variety of ECI soft switching DC/DC converter, its maximum output power is 300W, 600W and 800W etc. The corresponding power density is (6.2,10,17)W/cm3, the efficiency is 80~90 %. Japan Nemic Lambda company's latest launched a high frequency switching power module RM series using soft switching technology with the switching frequency of (200 ~ 300)kHz, and power density has reached 27W/cm3, the use of synchronous rectifier (MOS and FET instead of SCHOT diodes) makes the efficiency of the entire circuit increased to 90%.

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.

Test methods for switching power supply

1. withstand voltage testing

Definition: withstand the effective value of AC between specified terminals such as I/P-O/P, I/P-FG, O/P-FG, leakage current is generally allowed to be 10 MA and the time of 1 min.

1.2 Test conditions: Ta: 25 degrees Celsius; RH: indoor humidity.

1.3 Test circuit:

1.4 Description:

1.4.1 Voltage test is mainly to prevent electrical damage, through the input string of high voltage, affect the safety of users.

1.4.2 During the test, the voltage must be increased from 0V and reached the highest point within 1 minute.

1.4.3 Pay attention to the Timer setting of the tester when discharging, and switch the voltage back to 0V before OFF.

1.4.4 During the safety certification test, the transformer shall be separately measured. The temperature shall be 25 degrees Celsius, RH: 95 degrees Celsius, 48HR, and the transformer primary/secondary and primary /CORE shall be tested later.

1.4.5 Production line test time is 1 second.

2. Ripple noise (ripple noise voltage) testing

2.1 Definition:

Maximum (P-P) or effective value of the AC voltage component overlapped over DC output voltage.

2.2 Test conditions:

I/P: Nominal

O/P : Full Load

Ta: 25 ℃

2.3 Test circuit:

2.4 Test waveform:

2.5 Description:

2.5.1 The shorter the oscilloscope GND line, the better. The test line should be far away from the PUS.

2.5.2 Using a 1:1 Probe.

2.5.3 The Scope's BW is generally set at 20MHz, but it is better to set the BW to the maximum for the ripple noise of the current network products.

2.5.4 Noise and the use of the instrument, the environment is very different, so the test must indicate the test location.

2.5.5 Test ripple noise shall not exceed the original specification value +1%Vo.

3. Leakage current testing.

3.1 Definition:

Input the current flowing between the chassis (the chassis must be grounded).

3.2 Test conditions:

I/P: Vin Max) x 1.06 (TUV) / 60 hz

Vin max.(UL1012)/60Hz

O/P: No Load/Full Load

Ta: 25 ℃

3.3 Test circuit:

3.4 Description:

3.4.1 Both L and N need to be measured.

3.4.2 UL1012 R value is 1K5 and TUV R value is 2K/0. 15 uf.

3.4.3 Leakage current Specifications TUV: 3. 5 ma, UL1012:5 ma.