Embedded Switch Mode Power Supplies (SMPS)

A switch mode power supply is a type of electronic circuit used to convert power. They are also known as switching-mode power supplies or SMPS for short. The typical topology of an SMPS is AC to DC conversion, although users may find other switches that feature an output of DC to DC voltage.

How do SMPS work?

For the power supply to transform its input voltage into an output voltage, the switch will turn on and off with high frequency. The inductors or capacitors within the device will then regulate the power to the device. This continuous switching of the capacitor maintains the voltage at the desired level and provides excellent efficiency.

How do SMPS convert AC to DC?

In the case of AC mains usage, the input voltage will be filtered the same way with a capacitor or inductor to regulate the power and give you the DC output.

Which SMPS is best for a desktop PC?

The power supply unit you use in your PC is important as it ultimately determines what other components you can use within it and the output in performance you get at the end. For high-end gaming PC builds you should aim for an efficiency rating of >80%. The higher the rating, the less electricity it consumes. The less electricity used means easier heat dissipation which keeps the PC cool and performing optimally.

Switching power supply units with higher efficiency and lower levels of heat dissipation are typically compact in nature, making them ideal for projects with limited space.

Where are SMPS used?

  • PC/Laptops
  • Mobile phone chargers
  • Security systems such as CCTV Cameras
  • Machine tool industries

...
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Description Price Output Voltage Series Output Current Power Rating Input Voltage Number of Outputs Mounting Type Package Type Length Width Depth Ripple And Noise Load Regulation Weight
RS Stock No. 181-2188
BrandRS PRO
MYR29.05
Each
units
5V dc - 600mA 3W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 161-8276
BrandRS PRO
MYR64.13
Each
units
36V dc - 1A 36W - 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 161-8254
BrandRS PRO
MYR96.81
Each
units
24V dc - 2.5A 60W 127 370 V dc, 90 264 V ac 1 Chassis Mount Open Frame 101.6mm 51mm 30mm - - -
RS Stock No. 161-8256
BrandRS PRO
MYR295.58
Each
units
5V dc - 20A 100W 90 264V ac 1 Chassis Mount Open Frame 127mm 76mm 30.5mm - - -
RS Stock No. 161-8246
BrandRS PRO
MYR1,250.54
Each
units
24V dc - - 1kW - - Chassis Mount Enclosed - - - - - -
RS Stock No. 181-2140
BrandRS PRO
MYR367.61
1 Tube of 13
Tube(s)
5V dc - 1A 5W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 124-4709
BrandRS PRO
MYR146.91
Each
units
12V dc - 5A 60W 100 230V ac 1 Panel Mount Open Frame 101.6mm 50.8mm 29mm - - -
RS Stock No. 144-6265
BrandRS PRO
MYR173.75
Each
units
5V dc - 2.8A 14W 264 V ac, 370 V dc 1 Chassis Mount Encapsulated 96.1mm 54mm 31mm - - 135g
RS Stock No. 161-8279
BrandRS PRO
MYR68.26
Each
units
12V dc - 4.2A 50W 100 240V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 124-4712
BrandRS PRO
MYR179.21
Each
units
27.6V dc - 2.16A 60W 100 230V ac 2 Panel Mount Open Frame 101.6mm 50.8mm 29mm - - -
RS Stock No. 181-2193
BrandRS PRO
MYR34.71
Each
units
12V dc - 500mA 6W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 50.8mm 25.4mm 15.36mm - - 31g
RS Stock No. 819-3967
BrandRS PRO
MYR477.84
Each
units
12V dc - 13A 156W 88 264V ac 1 Chassis Mount Enclosed 97mm 38mm 158mm - - 570g
RS Stock No. 161-8287
BrandRS PRO
MYR82.87
Each
units
15V dc - 5A 75W 100 240V ac 1 Chassis Mount Enclosed 97mm 99mm 30mm - - 300g
RS Stock No. 771-9405
BrandRS PRO
MYR53.79
Each
units
9V dc - 222mA 2W 120 430 V dc, 85 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 828-0147
BrandRS PRO
MYR307.67
Each
units
12V dc - 5A 60W 100 240V ac 1 Cable Enclosed 187.2mm 122.2mm 89.9mm - - >1kg
RS Stock No. 181-2133
BrandRS PRO
MYR332.48
1 Tube of 13
Tube(s)
5V dc - 600mA 3W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 181-2145
BrandRS PRO
MYR559.30
1 Tube of 19
Tube(s)
3V dc - 1.25A 4.1W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 50.8mm 25.4mm 15.36mm - - 31g
RS Stock No. 124-4714
BrandRS PRO
MYR179.21
Each
units
48V dc - 1.25A 60W 100 230V ac 1 Panel Mount Open Frame 101.6mm 50.8mm 29mm - - -
RS Stock No. 181-2127
BrandRS PRO
MYR63.96
Each
units
5V dc - 4.1A 20.5W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 70mm 48mm 23.5mm - - 120g
RS Stock No. 144-6269
BrandRS PRO
MYR194.36
Each
units
5V dc - 4.1A 20.5W 264 V ac, 370 V dc 1 Chassis Mount Encapsulated 96.1mm 54mm 32mm - - 170g
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