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. 161-8219
BrandRS PRO
MYR341.22
Each
units
12V dc - 16.7A 200W 120 370 V dc, 85 264 V ac 1 PCB Mount Enclosed 199mm 99mm 50mm - - -
RS Stock No. 771-9388
BrandRS PRO
MYR54.19
Each
units
5V dc - 200mA 1W 120 430 V dc, 85 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 161-8300
BrandRS PRO
MYR114.89
Each
units
36V dc - 4.3A 155W 170 264 V ac, 85 132 V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 480g
RS Stock No. 711-2636
BrandRS PRO
MYR267.61
Each
units
24V dc - 2.5A 60W 88 264V ac 1 Chassis Mount Enclosed 98mm 82mm 35mm - - 310g
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. 181-2147
BrandRS PRO
MYR559.30
1 Tube of 19
Tube(s)
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. 144-6281
BrandRS PRO
MYR92.42
Each
units
5V dc - 1A 5W 264 V ac, 370 V dc 1 PCB Mount Encapsulated 53.8mm 28.8mm 19mm - - 43g
RS Stock No. 181-3265
BrandRS PRO
MYR176.95
Each
units
- - - - - - - - - - - - - -
RS Stock No. 771-9417
BrandRS PRO
MYR52.79
Each
units
15V dc - 133mA 2W 120 430 V dc, 85 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
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. 144-6274
BrandRS PRO
MYR363.95
Each
units
15V dc - 2.666A 40W 264 V ac, 370 V dc 1 Chassis Mount Encapsulated 135mm 70mm 33.5mm - - 310g
RS Stock No. 144-6272
BrandRS PRO
MYR194.34
Each
units
24V dc - 1.1A 25W 264 V ac, 370 V dc 1 Chassis Mount Encapsulated 96.1mm 54mm 32mm - - 170g
RS Stock No. 711-2618
BrandRS PRO
MYR214.62
Each
units
15V dc - 2.4A 36W 88 264V ac 1 Chassis Mount Enclosed 78mm 51mm 28mm - - 180g
RS Stock No. 181-3258
BrandRS PRO
MYR140.86
Each
units
- - - - - - - - - - - - - -
RS Stock No. 711-2595
BrandRS PRO
MYR169.34
Each
units
5V dc - 4A 20W 88 264V ac 1 Chassis Mount Enclosed 92mm 54mm 30mm - - 140g
RS Stock No. 161-8271
BrandRS PRO
MYR267.40
Each
units
48V dc - 4.2A 200W 90 264V ac 1 Chassis Enclosed 200mm 99mm 38mm - - -
RS Stock No. 181-2118
BrandRS PRO
MYR40.38
Each
units
24V dc - 450mA 10W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 53.8mm 28.8mm 19mm - - 48g
RS Stock No. 161-8230
BrandRS PRO
MYR422.10
Each
units
48V dc - 6.7A 300W 120 370 V dc, 90 264 V ac 1 PCB Mount Enclosed 199mm 99mm 50mm - - -
RS Stock No. 916-3917
BrandRS PRO
MYR291.13
Each
units
24V ac - 5A 120VA 230V ac 2 Wall Mount Enclosed 210mm 120mm 93mm - - <2kg
RS Stock No. 181-2187
BrandRS PRO
MYR32.14
Each
units
24V dc - 210mA 5W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
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