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. 786-4744
Brand :RS PRO
THB442.69
Each
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24V dc - 210mA 5W 1 100 → 400 V dc, 85 → 264 V ac PCB Mount Encapsulated 42mm 11mm 24mm 10g 75% +85°C
RS Stock No. 161-8261
Brand :RS PRO
THB1,603.21
Each
Units
36V dc - 3.5A 126W 1 90 → 264V ac Chassis Mount Open Frame 127mm 76mm 30.5mm - 86 %, 88 % +70°C
RS Stock No. 144-6288
Brand :RS PRO
THB894.54
Each
Units
12V dc - 2.1A 25W 1 264 V ac, 370 V dc PCB Mount Encapsulated 70mm 48mm 23.5mm 120g - +70°C
RS Stock No. 144-6274
Brand :RS PRO
THB2,172.71
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. 181-2110
Brand :RS PRO
THB123.15
Each
Units
9V dc - 333mA 3W 1 70 → 420 V dc, 85 → 305 V ac PCB Mount Open Frame 35mm 11mm 18mm 6g 73% +85°C
RS Stock No. 771-9436
Brand :RS PRO
THB1,224.15
Each
Units
24V dc - 625mA 15W 1 120 → 375 V dc, 85 → 265 V ac PCB Mount Enclosed 76.2mm 50.8mm 22.8mm 160g 82% +71°C
RS Stock No. 181-2197
Brand :RS PRO
THB226.15
Each
Units
24V dc - 250mA 6W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 50.8mm 25.4mm 15.36mm 31g 80% +70°C
RS Stock No. 181-3252
Brand :RS PRO
THB807.10
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 161-8254
Brand :RS PRO
THB735.22
Each
Units
24V dc - 2.5A 60W 1 127 → 370 V dc, 90 → 264 V ac Chassis Mount Open Frame 101.6mm 51mm 30mm - 87% +70°C
RS Stock No. 161-8257
Brand :RS PRO
THB1,603.21
Each
Units
12V dc - 10.5A 126W 1 90 → 264V ac Chassis Mount Open Frame 127mm 76mm 30.5mm - 85 %, 87 % +70°C
RS Stock No. 181-2126
Brand :RS PRO
THB357.54
Each
Units
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 Stock No. 161-8287
Brand :RS PRO
THB579.11
Each
Units
15V dc - 5A 75W 1 100 → 240V ac Chassis Mount Enclosed 97mm 99mm 30mm 300g 88% +50°C
RS Stock No. 161-8297
Brand :RS PRO
THB770.47
Each
Units
12V dc - 12.5A 150W 1 170 → 264 V ac, 85 → 132 V ac Chassis Mount Enclosed 99mm 82mm 30mm 480g 88% +70°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. 181-3265
Brand :RS PRO
THB1,361.49
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 181-3253
Brand :RS PRO
THB807.10
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 771-9372
Brand :RS PRO
THB313.59
Each
Units
9V dc - 333mA 3W 1 100 → 400 V dc, 85 → 264 V ac PCB Mount Ultra-Miniature 35mm 24mm 11mm - 76% +85°C
RS Stock No. 181-2122
Brand :RS PRO
THB308.56
Each
Units
24V dc - 625mA 15W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.8mm 28.8mm 23.5mm 60g 81% +70°C
RS Stock No. 161-8210
Brand :RS PRO
THB383.18
Each
Units
12V dc - 1.3A 15.6W 1 88 → 264V ac Chassis Mount Enclosed 850mm 58.5mm 36.5mm 250g 73% +60°C
RS Stock No. 124-4709
Brand :RS PRO
THB1,067.13
Each
Units
12V dc - 5A 60W 1 100 → 230V ac Panel Mount Open Frame 101.6mm 50.8mm 29mm - 89% +50°C
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