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. 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. 161-8300
BrandRS PRO
MYR114.89
Each
units
36V dc - 4.3A 155W 170 264 V ac, 85 132 V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 480g
RS Stock No. 161-8240
BrandRS PRO
MYR859.39
Each
units
24V dc - 26.5A 600W 90 264V ac 1 Chassis Mount Enclosed 218mm 116.5mm 41mm - - -
RS Stock No. 667-5795
BrandRS PRO
MYR74.82
Each
units
24V dc - 230mA 5.5W 110 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 50.8mm 25.4mm 15.16mm - - 35g
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. 161-8282
BrandRS PRO
MYR69.23
Each
units
36V dc - 1.45A 55W 100 240V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 181-3233
BrandRS PRO
MYR1,428.03
1 Tube of 13
Tube(s)
3.3V dc - 300mA 1W 120 370 V dc, 90 264 V ac 1 Through Hole Encapsulated 35.7mm 19mm 25mm - - 27.5g
RS Stock No. 181-2112
BrandRS PRO
MYR23.69
Each
units
24V dc - 125mA 3W 70 420 V dc, 85 305 V ac 1 PCB Mount Open Frame 35mm 11mm 18mm - - 6g
RS Stock No. 181-3256
BrandRS PRO
MYR135.31
Each
units
- - - - - - - - - - - - - -
RS Stock No. 181-2148
BrandRS PRO
MYR541.06
1 Tube of 19
Tube(s)
15V dc - 400mA 6W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 50.8mm 25.4mm 15.36mm - - 31g
RS Stock No. 161-8268
BrandRS PRO
MYR334.41
Each
units
27.6V dc - 0 5A 140W 195 253V ac 2 Chassis Mount Enclosed 200mm 110mm 50mm - - 900g
RS Stock No. 181-3234
BrandRS PRO
MYR1,428.03
1 Tube of 13
Tube(s)
5V dc - 200mA 1W 120 370 V dc, 90 264 V ac 1 Through Hole Encapsulated 35.7mm 19mm 25mm - - 27.5g
RS Stock No. 828-0184
BrandRS PRO
MYR353.05
Each
units
13.8V dc - 3A 42W 195 → 253V ac 1 Wall Mount Enclosed 240mm 225mm 80mm - - 1kg
RS Stock No. 161-8270
BrandRS PRO
MYR267.40
Each
units
24V dc - 8.4A 200W 90 264V ac 1 Chassis Mount Enclosed 200mm 99mm 38mm - - -
RS Stock No. 181-2121
BrandRS PRO
MYR47.48
Each
units
12V dc - 1.25A 15W 100 370 V dc, 85 264 V ac 1 PCB Mount Encapsulated 53.8mm 28.8mm 23.5mm - - 60g
RS Stock No. 144-6267
BrandRS PRO
MYR173.77
Each
units
15V dc - 1A 15W 264 V ac, 370 V dc 1 Chassis Mount Encapsulated 96.1mm 54mm 31mm - - 135g
RS Stock No. 161-8244
BrandRS PRO
MYR1,102.14
Each
units
27V dc - 23A 799W 90 264V ac 1 Chassis Mount Enclosed 226mm 116.5mm 41mm - - -
RS Stock No. 161-8274
BrandRS PRO
MYR64.13
Each
units
15V dc - 2.4A 36W - 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 161-8246
BrandRS PRO
MYR1,250.54
Each
units
24V dc - - 1kW - - Chassis Mount Enclosed - - - - - -
RS Stock No. 124-4712
BrandRS PRO
MYR179.21
Each
units
27.6V dc - 2.16A 60W 100 → 230V ac 2 Panel Mount Open Frame 101.6mm 50.8mm 29mm - - -
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