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. 711-2608
BrandRS PRO
$47.41
Each
units
15V dc - 1.4A 21W 88 264V ac 1 Chassis Mount Enclosed 92mm 54mm 30mm - - 140g
RS Stock No. 916-3920
BrandRS PRO
$88.22
Each
units
12V dc - 10A 120W 100 240V ac 9 Wall Mount Enclosed 250mm 215mm 59mm - - 1.9kg
RS Stock No. 161-8210
BrandRS PRO
$19.70
Each
units
12V dc - 1.3A 15.6W 88 264V ac 1 Chassis Mount Enclosed 850mm 58.5mm 36.5mm - - 250g
RS Stock No. 161-8284
BrandRS PRO
$29.47
Each
units
5V dc - 14A 60W 100 240V ac 1 Chassis Mount Enclosed 97mm 99mm 30mm - - 300g
RS Stock No. 181-2121
BrandRS PRO
$16.52
Each
units
12V dc - 1.25A 15W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 53.8mm 28.8mm 23.5mm - - 60g
RS Stock No. 161-8245
BrandRS PRO
$364.94
Each
units
48V dc - 14A 800W 90 264V ac 1 Chassis Mount Enclosed 226mm 116.5mm 41mm - - -
RS Stock No. 181-2199
BrandRS PRO
$11.20
Each
units
3V dc - 1A 3.3W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 161-8252
BrandRS PRO
$33.28
Each
units
12V dc - 4.5A 54W 127 370 V dc, 90 264 V ac 1 Chassis Mount Open Frame 101.6mm 51mm 30mm - - -
RS Stock No. 161-8250
BrandRS PRO
$31.78
Each
units
48V dc - 1A 48W 90 264V ac 1 Chassis Mount Open Frame 101.6mm 51mm 30.5mm - - -
RS Stock No. 181-2186
BrandRS PRO
$10.12
Each
units
3V dc - 770mA 2.3W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 161-8268
BrandRS PRO
$110.63
Each
units
27.6V dc - 0 5A 140W 195 253V ac 2 Chassis Mount Enclosed 200mm 110mm 50mm - - 900g
RS Stock No. 161-8299
BrandRS PRO
$33.72
Each
units
24V dc - 6.5A 156W 170 264 V ac, 85 132 V ac 1 Chassis Mount Enclosed 159mm 97mm 30mm - - 480g
RS Stock No. 181-2188
BrandRS PRO
$10.12
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. 144-6265
BrandRS PRO
$61.92
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. 144-6276
BrandRS PRO
$142.19
Each
units
12V dc - 5A 60W 264 V ac, 370 V dc 1 Chassis Mount Encapsulated 135mm 70mm 38.5mm - - 400g
RS Stock No. 161-8217
BrandRS PRO
$21.82
Each
units
24V dc - 1.1A 26W 88 264V ac 1 Chassis Mount Enclosed 85mm 58.5mm 36.5mm - - 250g
RS Stock No. 144-6284
BrandRS PRO
$39.48
Each
units
5V dc - 2.8A 14W 264 V ac, 370 V dc 1 PCB Mount Encapsulated 70mm 48mm 23.5mm - - 85g
RS Stock No. 161-8242
BrandRS PRO
$300.24
Each
units
48V dc - 13.6A 588W 90 264V ac 1 Chassis Mount Enclosed 218mm 116.5mm 41mm - - -
RS Stock No. 161-8301
BrandRS PRO
$39.56
Each
units
48V dc - 3.3A 158W 170 264 V ac, 85 132 V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 480g
RS Stock No. 144-6289
BrandRS PRO
$50.04
Each
units
24V dc - 1.1A 25W 264 V ac, 370 V dc 1 PCB Mount Encapsulated 70mm 48mm 23.5mm - - 120g
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