Din Rail Power Supply 50 Watt

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 1 Piece pc

Supply Capability:: 200,000 Pieces per Day pc/month

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Output Power: 1 - 50W
Output Type: Single
Input Voltage: 85 - 264VAC
Output Voltage: 12 - 48V all available
Output Current: 1 - 4.2A all available
Dimensions: 45 x 89.2 x 75.2mm

Specificatons

All 105C capacitors

Japanese brand for key components

DC OK signal

CE approved

Factory 20 years experience

Features

1) Universal AC input / full range

2) Installed on DIN rail TS35 / 7.5 / 15

3) High reliability, compact design

4) DC OK signal output

5) Protection: overload/ over voltage/ short circuit

6) 100% full load burn-in test

7) Built in EMI filter

8) 5 years limited warranty

9) Dimensions: 45 x 89.2 x 75.2mm

Q: I am now learning switching power supply, read some of the information in the "work in the CCM state of the flyback power", because of this do not understand, would like to ask the power of friends can give to explain, very grateful! As well as the principle of positive and reactive work mode? And tell me what I want to learn switching power supply only little knowledge of what I now learn from?: 1) on the switching power supply CCM and DCM state is the transformer magnetizing current, in fact, flyback switching power supply secondary side of the current working state there are three: Magnetically search the critical state of the current: At this time the primary shutdown power Toff = the ratio of the secondary inductor to the output voltage divided by the secondary peak current. The discontinuous state of the magnetized current DCM: Toff> The ratio of the secondary inductor to the output voltage is divided by the secondary peak current. Continuity of magnetization current CCM: Toff ≤ The ratio of the secondary inductor to the output voltage is divided by the secondary peak current. 2) forward and flyback power mode principle Single-ended flyback is the primary MOS turn-on when the secondary diode is turned off and the forward is synchronized. 3) Want to learn about switching power supply first learn electrician electrical and magnetic look at power supply network.

Q: As shown below, I used a switch chip tny276pn, optocoupler pc817, regulator source tcl431 and some small components (capacitors, resistors, etc.) designed a 5Vdc switching power supply. Transformers are custom, according to the flyback type, 132kHz, 85 ~ 265Vac parameters to do. The upper right corner of the picture p2 end is a 20-30 ohm coil, and now found that the input voltage dropped to 20Vac, 5Vdc was unstable, coil control of the magnet was to jump, I would like to 20Vac this parameter increased to 60 ~ 80Vac, So that the coil control of the magnet in the low voltage when the high jump, how should modify the circuit? Thank you.: The maximum power of the power is 1.25W, the overall power supply power by 70% efficiency of 1.8W. In this case need to modify the transformer. To the place there are the following: 1, the transformer to increase the ratio; such as the original is 200: 5, now changed to 300: 5. Now want to do your request 60-80VAC input protection, you need the current transformer parameters to be calculated; 2, the transformer sensation increased; proposed to change to 4mH ~ 8mH. Once the two done, the protection voltage will rise.

Q: Switching power supply 220 / 24V input break can be frequent power off: In fact, the general power is not particularly large switching power supply by the transformer independent of a group of windings for the chip power supply, so the power to start the power supply, so that the power is turned on and then plugged into the plug When only a large resistor can be used directly to start the chip, to be stable output, so there will be a little start-up time

Q: What brand of switching power supply cost-effective?: Sanmim with a few years, with the search on the very good

Q: Switching power supply, starting resistor is very hot, no output. What is the reason.: If it is the circuit, to check the chip's operating point has not met the requirements, but also to check the over-sampling voltage is not high, Vref voltage is wrong, RtCt circuit is no problem.

Q: What is the use of transformer shielded grounding in switching power supply?: In principle, the external shield is not required to ground. Grounding are do not know the principle. According to gourd painting scoop.

Q: I made a switching power supply, using boost dc-dc transform, input 18V, output 30-36V variable. Found that the output voltage has 300mv ripple and 1V burr. Has been added 10mh inductance and 6600uf capacitor filter. Switch tube plus RCD buffer Output with choke and EMI filter,: You said the burr is the overshoot Your inductance is not wrong? 10mH too big? Will it be 10uH wrong? In the out there, the overshoot is sure to exist, but this should be gone in the capacitor This has a lot to do with your measurement 1. Must be in the capacitance of the positive or the amount of load above, do not in the amount of inductance, there is no capacitance 2. With the oscilloscope, the ground connection will have a great impact on the measurement results you can move their own line of the line to see the extent of the test will certainly move The probe on the ground to try to short, the measurement results are correct The above two points to do, the measurement results should not be so big And to be honest, for the 30V output, there are 1V "glitches" that should be acceptable You can check the specifications of other switching power supply, this one usually 5%, 30V * 5% = 1.5V, 1V should be acceptable

Q: The voltage is too low to refer to the INPUT voltage range below the switching power supply: In general, the input voltage is low, if the output can meet your requirements, there is no big problem. because: The input voltage is low, in the same output power, the input line current will increase, if the margin is not enough, it will obviously heat. If the investigation is reasonable and mature switching power supply program, the input voltage is low, or leave enough margin, or limit the output power, or even into the undervoltage protection state. In addition, the input voltage is low, the switching tube withstand voltage will be reduced, the failure rate will be reduced.

Q: What is the difference between DC regulated switching power supply and linear power supply?: Switching power supply: high efficiency, small size, inertial components (inductance and smooth capacitance, etc.); Traditional power supply in turn is it, but the traditional power of the biggest advantage is the small noise, harmonic interference is small.

Q: Will the switching power supply fake load how to calculate?: Switching power supply fake load, the main purpose is to overcome the no-load or light load output instability. And the output is unstable, the primary D is too small, the energy is not open is the secondary overshoot voltage or feedback current is too large, forced IC to reduce D;

We have various advanced equipment, such as wave soldering and reflow soldering machine, RoHS testing, environmental testing system, etc. Only top international brand components are adopted for our key parts to ensure long lifetime and high reliability. Each unit is given full load burn-in test.

1. Manufacturer Overview

Location	Shanghai,China (Mainland)
Year Established	1995
Annual Output Value
Main Markets	North America 10% South America 3% Eastern Europe 5% Southeast Asia 8% Africa 2% Oceania 2% Mid East 1% Eastern Asia 2% Western Europe 15% Northern Europe 10% Southern Europe 1% South Asia 2% Domestic Market 39%
Company Certifications	CE/LVD Certificate; TUV Certificate; Hengfu Logo Registration Certificate; RoHS Certificate

2. Manufacturer Certificates

a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability

a) Trade Capacity
Nearest Port	Shanghai
Export Percentage	31% - 40%
No.of Employees in Trade Department
Language Spoken:	English, Chinese
b) Factory Information
Factory Size:	10,000-30,000 square meters
No. of Production Lines	Above 10
Contract Manufacturing	Design Service Offered Buyer Label Offered
Product Price Range