Din Rail Switching Power Supply with PFC 240 Watt

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1 Piece pc
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200,000 Pieces per Day pc/month

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Product Description:

  • Output Power: 201 - 300W

  • Output Type: Single

  • Input Voltage: Universal AC input

  • Output Voltage: 24~48V all available

  • Output Current: 5~10A all available

  • Dimensions: 63.2*114.4*125.2(mm)

  • Cooling method: convection



Universal input


All 105C capacitors

Japanese brand for key components

High efficiency up to 92%



1) Universal AC input / full range

2) PF>0.98@115V; >0.94@230VAC

3) Installed on DIN rail TS35 / 7.5 / 15

4) Built in EMI filter

5) High reliability, compact design

6) Protection: overload, over voltage, short circuit

7) 100% full load burn-in test

8) DC output for relay (24V model only)

9) 5 years limited warranty

10) Dimensions: 63.2*114.4*125.2(mm)

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Q:What is the difference between switching power supplies and transformers?
A: The switching power supply is small, light weight, high conversion efficiency.
Q:Switching power supply 220 / 24V input break can be frequent power off
Design has a project, but look at your off time.
Q:Isolation switch power supply and non-isolated switching power supply advantages and disadvantages,
Isolation type: Advantages: before and after the isolation, after the level of the earth without dangerous voltage, the output voltage can be equal to the input voltage or can contain a range of input voltage Disadvantages: larger, or the same size of the power smaller Scope of application: the occasion of electricity supply (such as computer power); signal detection to isolate the collection of occasions (such as electrocardiograph)
Q:Switching power supply efficiency
The lower the output voltage of the switching power supply, the lower the efficiency is, because the output loss of the output rectifier is inversely proportional to the output voltage;
Q:Working principle of small switching power supply
Switching power supply is used to control the switch through the circuit for high-speed pass and cut off. The conversion of direct current into high-frequency alternating current is provided to the transformer for transformer, resulting in the required group or groups of voltages! The reason for the high frequency AC is that the high frequency AC is much more efficient than the 50HZ in the transformer transformer circuit. So the switch transformer can be done very small, and the work is not very hot! The The cost is very low. If not 50Hz into high-frequency switching power supply does not make sense
Q:What is the basic principle of switching power supply?
So as to achieve automatic adjustment of the high-frequency pulse voltage duty cycle to achieve the final output DC voltage stability. Adjust the output DC voltage principle is the same, with artificial methods to change the oscillation frequency and pulse duty to achieve the purpose of changing the output DC voltage. Simply put the basic principle of switching power supply is: AC variable DC variable pulse voltage and then change the process of a DC. It has a high precision regulator, small consumption and other characteristics.
Q:Switching power supply, what is the hard switch? What is a soft switch?
The so-called hard switch, power immediately after the output voltage, the soft switch is the voltage rise after the voltage rise output.
Q:Switching power supply to increase the load when the first drop and then rebound to normal, what reason?
Before the load, the current is not large, switch on and off time ratio is to meet the capacitor charge, discharge balance, to maintain the output voltage unchanged. When the load is connected, the load is mainly from the capacitor, the capacitor discharge quickly, the voltage drop is very low, the switch has not adjusted conduction and turn-off time than the capacitance of the charge and discharge balance, this adjustment is gradually It takes time. So the output voltage, that is, the voltage on the capacitor, the first rise after the rise.
Q:Why switching power supply with two series capacitor filter, with a can you
Two series to increase the pressure, improve the reliability of the power supply.
Q:Name and function of the components of the switching power supply T1, T2, R11, R12, D6, C2, Q1, D5, U1, U6,
T2: high frequency transformer R11: constitute the RC filter circuit R12: current limiting effect D6: auxiliary power supply rectifier C2: filter capacitor D5: and R7 and C5 constitute the absorption circuit, which absorbs the instantaneous spikes of the switch U1: drive the chip U6: optical coupling circuit, the main feedback loop. The main principle of this circuit diagram: AC input, through the EMC filter bridge rectifier filter, and then through the drive chip control switch and then drive the high-frequency transformer, secondary AC and then re-rectifier filter output. Output after the stage through the comparison, optical feedback, adjust the PWM duty cycle, control output stability.
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  
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