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. 161-8255
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 - - -
RS Stock No. 161-8259
BrandRS PRO
MYR295.58
Each
units
15V dc - 8.4A 126W 90 → 264V ac 1 Chassis Mount Open Frame 127mm 76mm 30.5mm - - -
RS Stock No. 161-8216
BrandRS PRO
MYR62.76
Each
units
15V dc - 1.7A 25.5W 88 → 264V ac 1 Chassis Mount Enclosed 85mm 58.5mm 36.5mm - - 250g
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. 181-3269
BrandRS PRO
MYR151.62
Each
units
- - - - - - - - - - - - - -
RS Stock No. 161-8277
BrandRS PRO
MYR64.13
Each
units
48V dc - 800mA 38W - 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 771-8543
BrandRS PRO
MYR340.39
Each
units
15V dc - 7A 105W 88 → 264V ac 1 Chassis Mount Enclosed 158mm 97mm 38mm - - 520g
RS Stock No. 711-2608
BrandRS PRO
MYR162.60
Each
units
15V dc - 1.4A 21W 88 → 264V ac 1 Chassis Mount Enclosed 92mm 54mm 30mm - - 140g
RS Stock No. 161-8275
BrandRS PRO
MYR64.13
Each
units
24V dc - 1.5A 36W - 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 161-8221
BrandRS PRO
MYR341.22
Each
units
24V dc - 8.4A 200W 120 → 370 V dc, 85 → 264 V ac 1 PCB Mount Enclosed 199mm 99mm 50mm - - -
RS Stock No. 751-1419
BrandRS PRO
MYR211.50
Each
units
12V dc - 2.5A 30W 85 → 265V ac 1 PCB Mount Enclosed 89mm 63.5mm 25mm - - 250g
RS Stock No. 144-6285
BrandRS PRO
MYR119.94
Each
units
12V dc - 1.25A 15W 264 V ac, 370 V dc 1 PCB Mount Encapsulated 70mm 48mm 23.5mm - - 85g
RS Stock No. 161-8285
BrandRS PRO
MYR80.13
Each
units
12V dc - 6A 72W 100 → 240V ac 1 Chassis Mount Enclosed 97mm 99mm 30mm - - 300g
RS Stock No. 161-8276
BrandRS PRO
MYR64.13
Each
units
36V dc - 1A 36W - 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 144-6288
BrandRS PRO
MYR151.98
Each
units
12V dc - 2.1A 25W 264 V ac, 370 V dc 1 PCB Mount Encapsulated 70mm 48mm 23.5mm - - 120g
RS Stock No. 161-8261
BrandRS PRO
MYR295.58
Each
units
36V dc - 3.5A 126W 90 → 264V ac 1 Chassis Mount Open Frame 127mm 76mm 30.5mm - - -
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. 671-6691
BrandRS PRO
MYR108.34
Each
units
5V dc - 2A 10W 120 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 53.5mm 28.5mm 19mm - - 50g
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. 181-2111
BrandRS PRO
MYR23.69
Each
units
12V dc - 250mA 3W 70 → 420 V dc, 85 → 305 V ac 1 PCB Mount Open Frame 35mm 11mm 18mm - - 6g
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