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. 161-8254
BrandRS PRO
MYR96.81
Each
units
24V dc - 2.5A 60W 127 → 370 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 101.6mm 51mm 30mm - - -
RS Stock No. 751-1409
BrandRS PRO
MYR179.32
Each
units
12V dc - 1.66A 20W 120 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 53.5mm 28.5mm 23.5mm - - 50g
RS Stock No. 181-2201
BrandRS PRO
MYR32.14
Each
units
9V dc - 560mA 5W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 181-3265
BrandRS PRO
MYR151.62
Each
units
- - - - - - - - - - - - - -
RS Stock No. 819-3967
BrandRS PRO
MYR458.99
Each
units
12V dc - 13A 156W 88 → 264V ac 1 Chassis Mount Enclosed 97mm 38mm 158mm - - 570g
RS Stock No. 161-8224
BrandRS PRO
MYR335.77
Each
units
5V dc - 48A 240W 85 → 264V ac 1 Chassis Mount Enclosed 199mm 99mm 50mm - - -
RS Stock No. 181-2128
BrandRS PRO
MYR63.96
Each
units
12V dc - 2.1A 25W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 70mm 48mm 23.5mm - - 120g
RS Stock No. 161-8296
BrandRS PRO
MYR92.90
Each
units
48V dc - 2.3A 110W 85 → 264V ac 1 Chassis Mount Enclosed 129mm 97mm 30mm - - 340g
RS Stock No. 181-2136
BrandRS PRO
MYR332.48
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. 161-8229
BrandRS PRO
MYR422.10
Each
units
24V dc - 13A 300W 120 → 370 V dc, 90 → 264 V ac 1 PCB Mount Enclosed 199mm 99mm 50mm - - -
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. 828-0181
BrandRS PRO
MYR328.78
Each
units
13.8V dc - 1.5A 20W 195 → 253V ac 1 Wall Mount Enclosed 240mm 225mm 80mm - - 1kg
RS Stock No. 181-2142
BrandRS PRO
MYR367.61
1 Tube of 13
Tube(s)
9V dc - 560mA 5W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 181-3255
BrandRS PRO
MYR124.56
Each
units
- - - - - - - - - - - - - -
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. 771-9391
BrandRS PRO
MYR36.77
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
MYR232.10
Each
units
5V dc - 8A 40W 85 → 265V ac 1 PCB Mount Enclosed 89mm 63.5mm 25mm - - 250g
RS Stock No. 667-5776
BrandRS PRO
MYR61.43
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. 786-4738
BrandRS PRO
MYR57.10
Each
units
9V dc - 560mA 5W 100 → 400 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 42mm 11mm 24mm - - 10g
RS Stock No. 181-2144
BrandRS PRO
MYR367.61
1 Tube of 13
Tube(s)
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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