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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รายละเอียดสินค้า / Description ราคา / Price Output Voltage Series Output Current Power Rating Number of Outputs Input Voltage Mounting Type Package Type Length Width Depth Weight Efficiency Maximum Temperature
RS Stock No. 161-8228
Brand :RS PRO
THB2,657.83
Each
Units
12V dc - 25A 300W 1 120 → 370 V dc, 90 → 264 V ac PCB Mount Enclosed 199mm 99mm 50mm - 84.5% +65°C
RS Stock No. 667-5767
Brand :RS PRO
THB458.71
Each
Units
3.3V dc - 700mA 2.3W 1 110 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 37mm 23mm 15mm 25g 63% +70°C
RS Stock No. 161-8234
Brand :RS PRO
THB6,571.15
Each
Units
36V dc - 14A 480W 1 90 → 264V ac Chassis Mount Enclosed 218mm 116.5mm 41mm - - +70°C
RS Stock No. 771-9420
Brand :RS PRO
THB1,224.15
Each
Units
5V dc - 3A 15W 1 120 → 375 V dc, 85 → 265 V ac PCB Mount Enclosed 76.2mm 50.8mm 22.8mm 160g 76% +71°C
RS Stock No. 161-8229
Brand :RS PRO
THB3,130.83
Each
Units
24V dc - 13A 300W 1 120 → 370 V dc, 90 → 264 V ac PCB Mount Enclosed 199mm 99mm 50mm - 87% +65°C
RS Stock No. 181-2132
Brand :RS PRO
THB2,774.00
1 Tube of 13
Tube(s)
3V dc - 770mA 2.3W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 37mm 24.5mm 18mm 25g 66% +70°C
RS Stock No. 161-8241
Brand :RS PRO
THB6,277.37
Each
Units
36V dc - 17.5A 630W 1 90 → 264V ac Chassis Mount Enclosed 218mm 116.5mm 41mm - 90% +70°C
RS Stock No. 161-8282
Brand :RS PRO
THB503.58
Each
Units
36V dc - 1.45A 55W 1 100 → 240V ac Chassis Mount Enclosed 99mm 82mm 30mm 230g 89% +50°C
RS Stock No. 161-8215
Brand :RS PRO
THB457.60
Each
Units
12V dc - 2.1A 25.2W 1 88 → 264V ac Chassis Mount Enclosed 850mm 58.5mm 36.5mm 250g 77.5% +60°C
RS Stock No. 181-2111
Brand :RS PRO
THB123.15
Each
Units
12V dc - 250mA 3W 1 70 → 420 V dc, 85 → 305 V ac PCB Mount Open Frame 35mm 11mm 18mm 6g 74% +85°C
RS Stock No. 181-2145
Brand :RS PRO
THB4,514.00
1 Tube of 19
Tube(s)
3V dc - 1.25A 4.1W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 50.8mm 25.4mm 15.36mm 31g 70% +70°C
RS Stock No. 711-2624
Brand :RS PRO
THB1,937.86
Each
Units
12V dc - 5A 60W 1 88 → 264V ac Chassis Mount Enclosed 98mm 82mm 35mm 310g 88% +71°C
RS Stock No. 144-6274
Brand :RS PRO
THB2,642.65
Each
Units
15V dc - 2.666A 40W 1 264 V ac, 370 V dc Chassis Mount Encapsulated 135mm 70mm 33.5mm 310g 84 % @ 230 +70°C
RS Stock No. 124-4709
Brand :RS PRO
THB1,122.71
Each
Units
12V dc - 5A 60W 1 100 → 230V ac Panel Mount Open Frame 101.6mm 50.8mm 29mm - 89% +50°C
RS Stock No. 161-8222
Brand :RS PRO
THB2,471.08
Each
Units
36V dc - 5.6A 200W 1 120 → 370 V dc, 85 → 264 V ac PCB Mount Enclosed 199mm 99mm 50mm - 86.5% +70°C
RS Stock No. 161-8274
Brand :RS PRO
THB468.15
Each
Units
15V dc - 2.4A 36W 1 - Chassis Mount Enclosed 99mm 82mm 30mm 230g 86% -
RS Stock No. 161-8295
Brand :RS PRO
THB676.61
Each
Units
36V dc - 2.8A 101W 1 85 → 264V ac Chassis Mount Enclosed 129mm 97mm 30mm 340g 90.5% +70°C
RS Stock No. 181-3236
Brand :RS PRO
THB12,470.53
1 Tube of 13
Tube(s)
5V dc - 600mA 3W 1 120 → 370 V dc, 90 → 264 V ac Through Hole Encapsulated 35.7mm 19mm 25mm 27.5g 71% +85°C
RS Stock No. 161-8233
Brand :RS PRO
THB6,434.10
Each
Units
27V dc - 18A 480W 1 90 → 264V ac Chassis Mount Enclosed 218mm 116.5mm 41mm 8.7kg - +70°C
RS Stock No. 161-8280
Brand :RS PRO
THB498.17
Each
Units
15V dc - - 51W 1 100 → 240V ac Chassis Mount Enclosed 99mm 82mm 30mm 230g - +50°C
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