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. 161-8263
BrandRS PRO
MYR358.41
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. 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. 667-5786
BrandRS PRO
MYR76.50
Each
units
12V dc - 420mA 5W 110 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 50.8mm 25.4mm 15.16mm - - 35g
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. 181-2143
BrandRS PRO
MYR367.61
1 Tube of 13
Tube(s)
12V dc - 420mA 5W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 161-8234
BrandRS PRO
MYR905.95
Each
units
36V dc - 14A 480W 90 → 264V ac 1 Chassis Mount Enclosed 218mm 116.5mm 41mm - - -
RS Stock No. 161-8227
BrandRS PRO
MYR335.77
Each
units
48V dc - 5A 240W 85 → 264V ac 1 Chassis Mount Enclosed 199mm 99mm 50mm - - -
RS Stock No. 144-6273
BrandRS PRO
MYR364.09
Each
units
12V dc - 3.333A 40W 264 V ac, 370 V dc 1 Chassis Mount Encapsulated 135mm 70mm 33.5mm - - 310g
RS Stock No. 161-8251
BrandRS PRO
MYR96.81
Each
units
5V dc - 8A 40W 127 → 370 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 101.6mm 51mm 30mm - - -
RS Stock No. 161-8289
BrandRS PRO
MYR83.82
Each
units
36V dc - 2.1A 75.6W 100 → 240V ac 1 Chassis Mount Enclosed 97mm 99mm 30mm - - 300g
RS Stock No. 161-8225
BrandRS PRO
MYR335.77
Each
units
12V dc - 20A 240W 85 → 264V ac 1 Chassis Mount Enclosed 199mm 99mm 50mm - - -
RS Stock No. 161-8279
BrandRS PRO
MYR68.26
Each
units
12V dc - 4.2A 50W 100 → 240V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
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. 181-2117
BrandRS PRO
MYR40.38
Each
units
12V dc - 900mA 10W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 53.8mm 28.8mm 19mm - - 48g
RS Stock No. 161-8237
BrandRS PRO
MYR740.61
Each
units
24V dc - 21A 504W 88 → 264V ac 1 Chassis Mount Enclosed 183mm 120mm 83.5mm - - -
RS Stock No. 771-9394
BrandRS PRO
MYR49.31
Each
units
15V dc - 67mA 1W 120 → 430 V dc, 85 → 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 124-4709
BrandRS PRO
MYR146.91
Each
units
12V dc - 5A 60W 100 → 230V ac 1 Panel Mount Open Frame 101.6mm 50.8mm 29mm - - -
RS Stock No. 161-8299
BrandRS PRO
MYR93.02
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. 771-9436
BrandRS PRO
MYR171.22
Each
units
24V dc - 625mA 15W 120 → 375 V dc, 85 → 265 V ac 1 PCB Mount Enclosed 76.2mm 50.8mm 22.8mm - - 160g
RS Stock No. 161-8255
BrandRS PRO
MYR96.81
Each
units
48V dc - 1.25A 60W 127 → 370 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 101.6mm 51mm 30mm - - -
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