51 - 100W
110 or 220
Good quality with good price
Built-in EMI filter
Low output ripple noise
Protection:Over load.Over Voltage.short circuit
1.Low price and high reliability
2.Built-in EMI filter
3.Low output ripple noise
4.2:1 wide input range
5.Protectio cirns Over load.short circuit
6.1500VDC I/O isolation
7.DC adjustment range,less than 10% rated output voltage
8.Line regulation (full load)>0.5%
9.Output over load protection 1055~150% hiccup mode.auto-recovery
- Q:Switching power supply CE certification is probably how much money
- CNAS laboratory, TUV ITS UL witnessed laboratory. Switching power supply CE certification, to do LVD + EMC, LVD pay attention to temperature and pressure, EMC attention to conduction radiation. See ID is the mobile phone number
- Q:Is the DC power supply a switching power supply?
- DC is the direct current (Direct current), do not know if there is no misspellings
Switching power supply is AC-DC, such as 220V home AC, into a charger 5V DC
- Q:What is the difference between an open switching power supply and an ordinary switching power supply?
- Open-type switching power supply generally refers to no sealed shell, and can be cooled by natural air-cooled, all the wind a program to do the power of open switching power supply can do more
- Q:Switching power supply, starting resistance is very hot, no output
- 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:Switching power supply how maintenance
- 1, analysis circuit, draw a block diagram.
2, the use of external auxiliary power to detect the oscillation circuit.
3, detection of measurement output sampling circuit.
4, one by one detection, measurement of the various block diagram of the work situation.
5, with a load to detect a working point is normal.
6, remove the external auxiliary power supply, restore the normal power supply, check the work of all the work is normal.
7, with a load of 24 hours or 72 hours test is normal.
Above for the basic order, but also according to the specific appearance, and specific characteristics of the circuit analysis.
- Q:Switching power supply, constant current power supply, resistance to the power supply where the benefits?
- Switching power supply efficiency, voltage, load regulation is better, suitable for power supply voltage and load current fluctuations in the larger occasions, compared to the traditional frequency transformer in terms of lighter weight, smaller size (very small power case Frequency transformer may be smaller). The disadvantage is that the switching power supply circuit is very complex, design, debugging are difficult, the cost of high power, high precision case higher, and switching power supply is high frequency power supply, interference will be more serious.
- Q:Output 12V2A switching power supply, I would like to change to 12V5A, is not the transformer changed on the line
- Not yet, at least to change a few points:
1, rectifier diodes. The current capacity to about 10A, and increase the heat sink.
2, pulse width control circuit, to adjust to the appropriate duty cycle.
3, the filter capacitor capacity to increase.
4,5A output along the way of the copper plate thickened solder or thick copper wire.
5, modified, if the switch tube heat, increase the heat sink.
6,220 V AC input fuses increased to 1.5 to 2 times the original.
7, the original 12-volt output circuit is not filter coil, then, to increase the 5A filter coil, the original coil, enameled wire to be bold.
8, increase 12 volts 200 mA DC cooling fan.
- Q:Dimming mode, the switching power supply creak sound
- , I personally think that electromagnetic excitation of this, in addition to resonance, the other amplitude is very small
- Q:The switching power supply can not be started
- The mains voltage is unstable or the quality of the plug or the power outlet is poor and the contact is bad.
Mains voltage instability solution: For the frequent power supply instability in the region, we can buy ups power supply or 130-260v wide switching power supply to ensure the stability of the computer work.
The quality of the plug or the power outlet is poor and the contact is bad. Solution:
① do not plan to save money and buy cheap power plug, buy some brand-name power plug, because it is automatically installed within the machine crimping, no manual welding.
② whether it belongs to the wall socket internal virtual connection, we can change the host for a wall outlet try to see if there is the same automatic restart problem.
- Q:What are the LLVD and BLVD in the switching power supply?
- Simply said that a power and the second power is the main circuit and the control circuit, respectively, in the mobile base station, the popular point that a power out of the equipment in addition to the transmission equipment are stopped to ensure that other Station to connect the station to transfer the station to work properly, the second power is to protect the battery and power failure, then all the equipment are stopped.
Nowadays, our products are exported to numerous countres, like US, Australia, UK, etc. Successful improvements on technical processes and professional customer services have been recognized by more and more new or old customers. We hardly receive any negative feedback from customers. Our products so far have catched up with the consistency with world standard .
1. Manufacturer Overview
|Annual Output Value
||Below US$1 Million
||Southern Europe 4.57%
Domestic Market 28.13%
North America 22.50%
South America 12.31%
Eastern Europe 1.76%
Southeast Asia 9.85%
Mid East 9.00%
Eastern Asia 0.84%
Western Europe 8.65%
Northern Europe 2.11%
||gistration of a foreign trade operator; BUSINESS LICENSE; Custom Import & Export licence
2. Manufacturer Certificates
|a) Certification Name
3. Manufacturer Capability
||51% - 60%
|No.of Employees in Trade Department
||1,000-3,000 square meters
|No. of Production Lines
||OEM Service Offered Design Service Offered
|Product Price Range