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. 161-8235
BrandRS PRO
MYR879.56
Each
units
48V dc - 11A 480W 90 → 264V ac 1 Chassis Mount Enclosed 218mm 116.5mm 41mm - - 8.7kg
RS Stock No. 161-8293
BrandRS PRO
MYR90.19
Each
units
15V dc - - 105W 85 → 264V ac 1 Chassis Mount Enclosed 129mm 97mm 30mm - - 340g
RS Stock No. 181-2132
BrandRS PRO
MYR322.80
1 Tube of 13
Tube(s)
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. 161-8300
BrandRS PRO
MYR111.54
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. 161-8263
BrandRS PRO
MYR347.97
Each
units
12V dc - 16.6A 199W 127 → 370 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 128mm 76.5mm 37.1mm - - -
RS Stock No. 181-2136
BrandRS PRO
MYR322.80
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. 711-2602
BrandRS PRO
MYR153.65
Each
units
24V dc - 900mA 21.6W 88 → 264V ac 1 Chassis Mount Enclosed 92mm 54mm 30mm - - 140g
RS Stock No. 161-8265
BrandRS PRO
MYR347.97
Each
units
24V dc - 8.1A 201.6W 127 → 370 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 128mm 76.5mm 37.1mm - - -
RS Stock No. 181-2110
BrandRS PRO
MYR23.00
Each
units
9V dc - 333mA 3W 70 → 420 V dc, 85 → 305 V ac 1 PCB Mount Open Frame 35mm 11mm 18mm - - 6g
RS Stock No. 667-5773
BrandRS PRO
MYR59.64
Each
units
12V dc - 250mA 3W 110 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 37mm 23mm 15mm - - 25g
RS Stock No. 771-9391
BrandRS PRO
MYR35.70
Each
units
12V dc - 83mA 1W 120 → 430 V dc, 85 → 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 751-1425
BrandRS PRO
MYR225.34
Each
units
5V dc - 8A 40W 85 → 265V ac 1 PCB Mount Enclosed 89mm 63.5mm 25mm - - 250g
RS Stock No. 771-9411
BrandRS PRO
MYR51.19
Each
units
24V dc - 83mA 2W 120 → 430 V dc, 85 → 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 181-2116
BrandRS PRO
MYR39.20
Each
units
9V dc - 1.1A 10W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 53.8mm 28.8mm 19mm - - 48g
RS Stock No. 181-2147
BrandRS PRO
MYR525.30
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. 181-3255
BrandRS PRO
MYR120.93
Each
units
- - - - - - - - - - - - - -
RS Stock No. 770-4068
BrandRS PRO
MYR985.34
Each
units
15V dc - 50A 750W 127 → 370 V dc, 90 → 264 V ac 1 Chassis Mount Enclosed 250mm 127mm 41mm - - 1.6kg
RS Stock No. 771-9382
BrandRS PRO
MYR47.87
Each
units
9V dc - 111mA 1W 120 → 430 V dc, 85 → 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 181-3252
BrandRS PRO
MYR115.54
Each
units
- - - - - - - - - - - - - -
RS Stock No. 161-8222
BrandRS PRO
MYR331.28
Each
units
36V dc - 5.6A 200W 120 → 370 V dc, 85 → 264 V ac 1 PCB Mount Enclosed 199mm 99mm 50mm - - -
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