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. 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. 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. 819-3970
BrandRS PRO
MYR477.84
Each
units
24V dc - 6.5A 156W 88 264V ac 1 Chassis Mount Enclosed 97mm 38mm 158mm - - 570g
RS Stock No. 181-2189
BrandRS PRO
MYR34.71
Each
units
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. 144-6277
BrandRS PRO
MYR430.55
Each
units
24V dc - 2.5A 60W 264 V ac, 370 V dc 1 Chassis Mount Encapsulated 135mm 70mm 38.5mm - - 400g
RS Stock No. 161-8266
BrandRS PRO
MYR358.41
Each
units
48V dc - 4.16A 199.6W 127 370 V dc, 90 264 V ac 1 Chassis Mount Open Frame 128mm 76.5mm 37.1mm - - -
RS Stock No. 161-8269
BrandRS PRO
MYR267.40
Each
units
12V dc - 16.7A 200W 90 264V ac 1 Chassis Mount Enclosed 200mm 99mm 38mm - - -
RS Stock No. 161-8268
BrandRS PRO
MYR334.41
Each
units
27.6V dc - 0 5A 140W 195 253V ac 2 Chassis Mount Enclosed 200mm 110mm 50mm - - 900g
RS Stock No. 181-2120
BrandRS PRO
MYR47.48
Each
units
5V dc - 2.7A 13.5W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 53.8mm 28.8mm 23.5mm - - 60g
RS Stock No. 161-8272
BrandRS PRO
MYR66.68
Each
units
5V dc - 7A 35W - 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 161-8299
BrandRS PRO
MYR96.93
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. 161-8243
BrandRS PRO
MYR1,102.14
Each
units
24V dc - 27A 799W 90 264V ac 1 Chassis Mount Enclosed 226mm 116.5mm 41mm - - -
RS Stock No. 181-2112
BrandRS PRO
MYR23.69
Each
units
24V dc - 125mA 3W 70 420 V dc, 85 305 V ac 1 PCB Mount Open Frame 35mm 11mm 18mm - - 6g
RS Stock No. 161-8244
BrandRS PRO
MYR1,102.14
Each
units
27V dc - 23A 799W 90 264V ac 1 Chassis Mount Enclosed 226mm 116.5mm 41mm - - -
RS Stock No. 161-8273
BrandRS PRO
MYR70.08
Each
units
12V dc - 3A 36W - 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 161-8240
BrandRS PRO
MYR859.39
Each
units
24V dc - 26.5A 600W 90 264V ac 1 Chassis Mount Enclosed 218mm 116.5mm 41mm - - -
RS Stock No. 181-2202
BrandRS PRO
MYR32.14
Each
units
12V dc - 420mA 5W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 161-8260
BrandRS PRO
MYR295.58
Each
units
24V dc - 5.2A 124.8W 90 264V ac 1 Chassis Mount Open Frame 127mm 76mm 30.5mm - - -
RS Stock No. 181-2122
BrandRS PRO
MYR47.48
Each
units
24V dc - 625mA 15W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 53.8mm 28.8mm 23.5mm - - 60g
RS Stock No. 161-8239
BrandRS PRO
MYR859.39
Each
units
12V dc - 42A 600W 90 264V ac 1 Chassis Mount Enclosed 218mm 116.5mm 41mm - - -
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