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. 161-8217
BrandRS PRO
MYR59.59
Each
units
24V dc - 1.1A 26W 88 → 264V ac 1 Chassis Mount Enclosed 85mm 58.5mm 36.5mm - - 250g
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. 771-9388
BrandRS PRO
MYR49.26
Each
units
5V dc - 200mA 1W 120 → 430 V dc, 85 → 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 181-2198
BrandRS PRO
MYR29.05
Each
units
24V dc - 125mA 3W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 671-6717
BrandRS PRO
MYR97.63
Each
units
24V dc - 450mA 10W 120 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 53.5mm 28.5mm 19mm - - 50g
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. 181-2136
BrandRS PRO
MYR332.48
1 Tube of 13
Tube(s)
12V dc - 250mA 3W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 161-8248
BrandRS PRO
MYR95.18
Each
units
12V dc - 3.7A 44W 90 → 264V ac 1 Chassis Mount Open Frame 101.6mm 51mm 30.5mm - - -
RS Stock No. 161-8226
BrandRS PRO
MYR335.77
Each
units
24V dc - 10A 240W 85 → 264V ac 1 Chassis Mount Enclosed 199mm 99mm 50mm - - -
RS Stock No. 144-6277
BrandRS PRO
MYR430.55
Each
units
24V dc - 2.5A 60W 264 V ac, 370 V dc 1 Chassis Mount Encapsulated 135mm 70mm 38.5mm - - 400g
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. 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. 711-2605
BrandRS PRO
MYR161.42
Each
units
12V dc - 1.7A 20W 88 → 264V ac 1 Chassis Mount Enclosed 92mm 54mm 30mm - - 140g
RS Stock No. 181-2139
BrandRS PRO
MYR367.61
1 Tube of 13
Tube(s)
3V dc - 1A 3.3W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 161-8256
BrandRS PRO
MYR295.58
Each
units
5V dc - 20A 100W 90 → 264V ac 1 Chassis Mount Open Frame 127mm 76mm 30.5mm - - -
RS Stock No. 181-2108
BrandRS PRO
MYR23.69
Each
units
3V dc - 600mA 1.98W 70 → 420 V dc, 85 → 305 V ac 1 PCB Mount Open Frame 35mm 11mm 18mm - - 6g
RS Stock No. 181-2130
BrandRS PRO
MYR63.96
Each
units
24V dc - 1.1A 25W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 70mm 48mm 23.5mm - - 120g
RS Stock No. 161-8287
BrandRS PRO
MYR82.87
Each
units
15V dc - 5A 75W 100 → 240V ac 1 Chassis Mount Enclosed 97mm 99mm 30mm - - 300g
RS Stock No. 181-2137
BrandRS PRO
MYR332.48
1 Tube of 13
Tube(s)
15V dc - 200mA 3W 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 - - -
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