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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RS Stock No. 771-9388
Brand :RS PRO
THB382.27
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. 771-9401
Brand :RS PRO
THB400.02
Each
Units
5V dc - 400mA 2W 120 430 V dc, 85 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 751-1419
Brand :RS PRO
THB1,553.98
Each
Units
12V dc - 2.5A 30W 85 265V ac 1 PCB Mount Enclosed 89mm 63.5mm 25mm - - 250g
RS Stock No. 667-5760
Brand :RS PRO
THB459.26
Each
Units
5V dc - 600mA 3W 110 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 37mm 23mm 15mm - - 25g
RS Stock No. 711-2627
Brand :RS PRO
THB1,670.84
Each
Units
24V dc - 1.5A 36W 88 264V ac 1 Chassis Mount Enclosed 78mm 51mm 28mm - - 180g
RS Stock No. 671-6717
Brand :RS PRO
THB741.68
Each
Units
24V dc - 450mA 10W 120 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 53.5mm 28.5mm 19mm - - 50g
RS Stock No. 667-5776
Brand :RS PRO
THB437.39
Each
Units
24V dc - 125mA 3W 110 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 37mm 23mm 15mm - - 25g
RS Stock No. 771-9414
Brand :RS PRO
THB393.06
Each
Units
12V dc - 167mA 2W 120 430 V dc, 85 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 181-2196
Brand :RS PRO
THB243.00
Each
Units
15V dc - 200mA 3W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 161-8285
Brand :RS PRO
THB604.09
Each
Units
12V dc - 6A 72W 100 240V ac 1 Chassis Mount Enclosed 97mm 99mm 30mm - - 300g
RS Stock No. 161-8229
Brand :RS PRO
THB3,130.83
Each
Units
24V dc - 13A 300W 120 370 V dc, 90 264 V ac 1 PCB Mount Enclosed 199mm 99mm 50mm - - -
RS Stock No. 161-8291
Brand :RS PRO
THB676.61
Each
Units
12V dc - 8.5A 102W 85 264V ac 1 Chassis Mount Enclosed 129mm 97mm 30mm - - 340g
RS Stock No. 181-2136
Brand :RS PRO
THB2,774.00
1 Tube of 13
Tube(s)
12V dc - 250mA 3W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 161-8247
Brand :RS PRO
THB9,136.80
Each
Units
48V dc - - 1kW - - Chassis Mount Enclosed - - - - - -
RS Stock No. 161-8275
Brand :RS PRO
THB482.92
Each
Units
24V dc - 1.5A 36W - 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 181-2126
Brand :RS PRO
THB458.00
Each
Units
24V dc - 833mA 20W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 53.8mm 28.8mm 23.5mm - - 60g
RS Stock No. 771-9398
Brand :RS PRO
THB368.71
Each
Units
24V dc - 42mA 1W 120 430 V dc, 85 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 181-3234
Brand :RS PRO
THB11,914.74
1 Tube of 13
Tube(s)
5V dc - 200mA 1W 120 370 V dc, 90 264 V ac 1 Through Hole Encapsulated 35.7mm 19mm 25mm - - 27.5g
RS Stock No. 161-8287
Brand :RS PRO
THB604.09
Each
Units
15V dc - 5A 75W 100 240V ac 1 Chassis Mount Enclosed 97mm 99mm 30mm - - 300g
RS Stock No. 181-2197
Brand :RS PRO
THB290.00
Each
Units
24V dc - 250mA 6W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 50.8mm 25.4mm 15.36mm - - 31g
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