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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Omschrijving Prijs Output Voltage Series Output Current Power Rating Number of Outputs Input Voltage Mounting Type Package Type Length Width Depth Weight Efficiency Maximum Temperature
RS-stocknr. 161-8298
FabrikantRS PRO
€ 21,20
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Aantal stuks
15V dc - - 150W 1 170 → 264 V ac, 85 → 132 V ac Chassis Mount Enclosed 99mm 82mm 30mm 480g - +70°C
RS-stocknr. 144-6282
FabrikantRS PRO
€ 15,62
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12V dc - 430mA 5W 1 264 V ac, 370 V dc PCB Mount Encapsulated 53.8mm 28.8mm 19mm 43g - +70°C
RS-stocknr. 161-8275
FabrikantRS PRO
€ 12,67
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Aantal stuks
24V dc - 1.5A 36W 1 - Chassis Mount Enclosed 99mm 82mm 30mm 230g 88% -
RS-stocknr. 144-6287
FabrikantRS PRO
€ 25,70
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Aantal stuks
5V dc - 4.1A 20.5W 1 264 V ac, 370 V dc PCB Mount Encapsulated 70mm 48mm 23.5mm 120g - +70°C
RS-stocknr. 144-6269
FabrikantRS PRO
€ 33,32
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Aantal stuks
5V dc - 4.1A 20.5W 1 264 V ac, 370 V dc Chassis Mount Encapsulated 96.1mm 54mm 32mm 170g 79 % @ 230 +70°C
RS-stocknr. 144-6285
FabrikantRS PRO
€ 20,28
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Aantal stuks
12V dc - 1.25A 15W 1 264 V ac, 370 V dc PCB Mount Encapsulated 70mm 48mm 23.5mm 85g - +70°C
RS-stocknr. 181-2126
FabrikantRS PRO
€ 10,57
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Aantal stuks
24V dc - 833mA 20W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.8mm 28.8mm 23.5mm 60g 83% +70°C
RS-stocknr. 181-2202
FabrikantRS PRO
€ 6,41
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12V dc - 420mA 5W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 37mm 24.5mm 18mm 25g 79% +70°C
RS-stocknr. 161-8224
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€ 61,67
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5V dc - 48A 240W 1 85 → 264V ac Chassis Mount Enclosed 199mm 99mm 50mm - - +75°C
RS-stocknr. 161-8230
FabrikantRS PRO
€ 64,22
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48V dc - 6.7A 300W 1 120 → 370 V dc, 90 → 264 V ac PCB Mount Enclosed 199mm 99mm 50mm - 87.5% +65°C
RS-stocknr. 181-2196
FabrikantRS PRO
€ 5,59
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Aantal stuks
15V dc - 200mA 3W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 37mm 24.5mm 18mm 25g 77% +70°C
RS-stocknr. 161-8234
FabrikantRS PRO
€ 158,66
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36V dc - 14A 480W 1 90 → 264V ac Chassis Mount Enclosed 218mm 116.5mm 41mm - - +70°C
RS-stocknr. 828-0147
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€ 68,82
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12V dc - 5A 60W 1 100 → 240V ac Cable Enclosed 187.2mm 122.2mm 89.9mm >1kg 75(Min)% +40°C
RS-stocknr. 751-1421
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€ 48,48
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24V dc - 1.25A 30W 1 85 → 265V ac PCB Mount Enclosed 89mm 63.5mm 25mm 250g - +71°C
RS-stocknr. 181-2200
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€ 6,39
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5V dc - 1A 5W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 37mm 24.5mm 18mm 25g 75% +70°C
RS-stocknr. 161-8228
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€ 64,22
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12V dc - 25A 300W 1 120 → 370 V dc, 90 → 264 V ac PCB Mount Enclosed 199mm 99mm 50mm - 84.5% +65°C
RS-stocknr. 161-8219
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€ 58,00
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12V dc - 16.7A 200W 1 120 → 370 V dc, 85 → 264 V ac PCB Mount Enclosed 199mm 99mm 50mm - 84% +70°C
RS-stocknr. 671-6708
FabrikantRS PRO
€ 20,40
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15V dc - 700mA 10W 1 120 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.5mm 28.5mm 19mm 50g - +70°C
RS-stocknr. 786-4725
FabrikantRS PRO
€ 12,91
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3.3V dc - 1A 3.3W 1 100 → 400 V dc, 85 → 264 V ac PCB Mount Ultra-Miniature 42mm 11mm 24mm - 65% +85°C
RS-stocknr. 181-2128
FabrikantRS PRO
€ 12,30
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12V dc - 2.1A 25W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 70mm 48mm 23.5mm 120g 83% +70°C
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