SMPS power unit:

SMPS power unit power supply (also referred to as switching Rectifier SMR) through the MOSFET or IGBT in the high-frequency operation, switching frequency is generally controlled within 50-100 KHz range, ripple factor≤1%, to achieve high efficiency and miniaturization.

SMPS power unit birth process:

1960s large-scale application of the linear regulator DC power supply, because it’s following disadvantages, such as large volume weight, it is difficult to achieve miniaturization, large loss, low efficiency, there are common end between output and input, which difficult to achieve isolation, it can only lower voltage, can’t increase voltage, so it is difficult in the case of the application of output greater than 5A, has begun to be replace by DC SMPS power unit.

In 1964, Japan NEO magazine published two articles instructive:
One article for the “high-frequency technology make AC variable DC power supply miniaturization”;
Another article “pulse modulation for power supply miniaturization.”
These two articles indicates SMPS power unit DC power supply miniaturization research direction, that is one high frequency, the second is the use of pulse width modulation techniques. After nearly 10 years of research, development and achieved good results.

SMPS power unit 20kHZ revolution:

In 1973, Motorola published an article entitled “Trigger from 20kHz of revolution”, all around the world set off a development boom of high-frequency switching power supply and DC/DC converter is used as a switching regulator switching power supply, the power density from 1~4 W/in3 increased to 40~50W/in3. First adopted Buck converter.

By the mid-1980s, Buck, Boost and Buck Boost converter is also applied to SMPS power unit. The mid-1970s, the California Institute of Technology have developed a new switching converter, called Cuk converter (based on the inventor’s name S1obodan Cuk). Cuk converter and Buck-Boost Converter with each other duality, also is a step- down converter. The mid-1980s and then gradually be applied to switching power supply.

In 1976, the United States P. W, Clarke has developed a transformer “primary inductance converter” referred to PIC, patented, and is also applied to the switching power supply.

In 1977, Bell Laboratories on the basis of the PIC, has developed a transformer “single-ended primary inductance converter”, short (with the transformer) SEPIC circuit, this is a new DC/DC single-ended PWM switching converter circuit is called dual DualSEPIC, or Zeta converter.

By 1989, people applied SEPIC and Zeta to SMPS power unit, making switching power supply used in the DC/DC converter, increased to 6 kinds. So far, through DC/DC converter and the cascade evolution, switching power supply used in DC/DC converter has been increased to 14 kinds. Use these 14 kinds of DC/DC converter as a switching power supply, it can be designed in different places, meet different performance requirements and applications, high performance, all kinds of power, high power density switching power supply.

SMPS power unit Specification and parameter:

SMPS power unit Input voltageSingle phase 220V AC, 3 phase 380V/415V/440V 50-60Hz, suggest to use 3 phase
Output voltage6V/12V/15V/18V/24V/36V/48V optional or according to customers’ request
Output current0-600A (Random optional)
Voltage stability≤1%
Current stability≤1%
Ripple factor1%-2%
Efficiency≥90%
 Stabilization modeCurrent stabilization/Voltage stabilization (Switchable easily)
Adjustment rangeVoltage/Current from 0-100% continuously adjustable within rated range
Cooling systemAir cooling/Water cooling/Oil cooling
Control methodManual/PLC
Display contentsVoltage meter/Current meter/Working/Over temp/Error, etc..
Protection methodInput over voltage/Under voltage/Over current/Output short/Over heating self protection etc..
Operating temperature-20-50℃
Ambient temperature-30-65℃
Ambient humidity≤90%
Working loadingFull capacity operation, more than 1,000 meters above sea level, reduced load operation

SMPS power unit  Packing details:

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SCR rectifier compare HF power supply

Electrocoagulation waste water treatment power supply

Electrocoagulation waste water treatment power supply

Hard oxidation rectifier

Hard oxidation rectifier

Pulse rectifier

Pulse rectifier

Pulse rectifiers silver plating

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12-volt-dc-power-supply

12 volt dc power supply 3000A

3000A 12 volt dc power supply
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Electroplating power supply 2000A

2000A Electroplating power supply
1500A-Plating-rectifiers

Plating rectifiers 1500A

1500A Plating rectifiers
Rectifiers

Rectifiers 1000A

1000A Rectifiers

SMPS power unit 600A

600A SMPS power unit
Plating power supply

Plating power supply 500A

500A Plating power supply
AC-to-DC-rectifier

AC to DC rectifier 750A

750A AC to DC rectifier
DC power supply

DC power supply 300A

300A DC power supply
Power supply 200A

Power supply 200A

200A Power supply
100A-Rectifier

Plating rectifier 100A

100A Plating rectifier
Anodizing rectifier

Anodizing rectifier

Anodizing rectifier
Pulse-plating-power-supply

Pulse plating power supply

Pulse plating power supply
Oxidation-pulse-power-supply

Oxidation pulse power supply

Oxidation pulse power supply
Single pulse plating power supply

Single pulse plating power supply

Single pulse plating power supply
High-frequency-rectifier

High frequency rectifier 20000A

20000A High frequency rectifier
Hard-oxidation-pot-using-our-pulse-rectifier-1

Hard oxidation

Hard oxidation
Puse-power-supply

Pulse power supply

Pulse power supply
Pulse-power-supply-gold-plating

Pulse power supply gold plating

Pulse power supply gold plating

Water treatment power supply

Water treatment power supply

Water cooling plating rectifier

Water cooling plating rectifier
Electrodialysis power supply 2

Electrodialysis power supply

Electrodialysis power supply

HF rectifier 10000A

10000A HF rectifier

Electrolysis power supply 8000A

8000A Electrolysis power supply

Switch mode power supply 6000A

6000A Switch mode power supply

AC to DC power supply 5000A

5000A AC to DC power supply
Rectifier-supplier-4000A

Rectifier supplier 4000A

4000A Rectifier supplier

Electrophoresis power source

Electrophoresis power source
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