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

...
Read more Read less

Filters

Viewing 1 - 20 of 4265 products
Results per page
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. 183-0010
Mfr. Part No.LPT42
TWD1,871.00
Each
units
5/±12 V dc - 2.5 A, 5 A, 700 mA 40W 85 264 V ac, 120 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS Stock No. 815-7393
Mfr. Part No.MSP-600-12
BrandMean Well
TWD8,931.00
Each
units
12 V dc - 53A 636W 85 264 V ac, 120 370 V dc 1 Rack Mount Enclosed 218mm 105mm 63.5mm - - 1.6kg
RS Stock No. 455-7689
Mfr. Part No.LPT42-M
TWD1,972.00
Each
units
5/±12 V dc - 2.5 A, 5 A, 700 mA 40W 85 264 V ac, 120 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS Stock No. 739-8010
Mfr. Part No.ZWS-150BAF-24
BrandTDK-Lambda
TWD5,856.00
Each
units
24 V dc - 6.3A 151W 85 265 V ac, 120 370 V dc 1 Chassis Mount Open Frame 188mm 47mm 85mm - - 390g
RS Stock No. 489-8586
Mfr. Part No.PBA50F-24-N
BrandCosel
TWD2,776.00
Each
units
24 V dc - 2.2A 52.8W 85 264 V ac, 120 370 V dc 1 Chassis Mount Enclosed 136.5mm 82.5mm 34.5mm - - 280g
RS Stock No. 777-5063
Mfr. Part No.ZWS10B-5
BrandTDK-Lambda
TWD1,643.00
Each
units
5 V dc - 2A 10W 85 265 V ac, 120 370 V dc 1 Chassis Mount Open Frame 73.5mm 55mm 22mm - - 45g
RS Stock No. 898-7223
Mfr. Part No.VS100E-24/A
BrandTDK-Lambda
TWD1,353.00
Each
units
24 V dc - 4.3A 103W 85 132 V ac, 110 175 V dc 1 Chassis Mount Enclosed 185mm 72mm 45mm - - 290g
RS Stock No. 621-0584
Mfr. Part No.RS-25-24
BrandMean Well
TWD458.00
Each
units
24 V dc - 1.1A 26W 88 264 V ac, 125 373 V dc 1 Chassis Mount Enclosed 78mm 51mm 28mm - - 200g
RS Stock No. 454-4093
Mfr. Part No.JWS600-48
BrandTDK-Lambda
TWD32,829.00
Each
units
48 V dc - 13A 624W 85 265 V ac, 120 330 V dc 1 Chassis Mount Enclosed 200mm 92mm 160mm - - 3kg
RS Stock No. 192-1267
Mfr. Part No.LPS255-C
TWD14,669.00
Each
units
24 V dc - 10.4A 250W 85 264 V ac, 120 300 V dc 1 Chassis Mount Enclosed 262mm 127mm 76.2mm - - 1.2kg
RS Stock No. 627-3838
Mfr. Part No.XG4
BrandExcelsys
TWD5,919.00
Each
units
30 V dc - 10A 240W 85 264 V ac, 120 380 V dc 1 Chassis Mount Enclosed 269.75mm 127mm 40.4mm - - 100g
RS Stock No. 644-8177
Mfr. Part No.SP-320-24
BrandMean Well
TWD2,938.00
Each
units
24 V dc - 13A 312W 88 264 V ac, 124 370 V dc 1 Chassis Mount Enclosed 215mm 115mm 50mm - - 1.1kg
RS Stock No. 200-190
Mfr. Part No.NV1-453TT
BrandTDK-Lambda
TWD10,217.00
Each
units
3.3/5/±12 V dc - 1 A, 5 A, 15 A, 25 A 175W 90 264V ac 4 Chassis Mount Open Frame 5in 3in 1.25in - - 250g
RS Stock No. 183-0076
Mfr. Part No.LPS63
TWD3,274.00
Each
units
12 V dc - 5A 60W 85 264 V ac, 120 300 V dc 1 Chassis Mount Open Frame 127mm 76.2mm 42.9mm - - 340g
RS Stock No. 813-9070
Mfr. Part No.HWS-150A-12/A
BrandTDK-Lambda
TWD4,852.00
Each
units
12 V dc - 13A 150W 85 265 V ac, 120 370 V dc 1 Chassis Mount Enclosed 82mm 37mm 160mm - - 500g
RS Stock No. 786-4729
BrandRS PRO
TWD415.00
Each
units
5 V dc - 1A 5W 85 264 V ac, 100 400 V dc 1 PCB Mount Encapsulated 42mm 11mm 24mm - - 10g
RS Stock No. 848-1949
Mfr. Part No.GLM65BG
TWD5,310.00
Each
units
5.1/±15 V dc - - 60W 90 264V ac 1 Chassis Mount Open Frame - - - - - -
RS Stock No. 122-7189
Mfr. Part No.SDS60UT06
BrandXP Power
TWD2,295.00
Each
units
±5/12 V dc - 3 A, 6 A, 800 mA 63W 90 264 V ac, 120 370 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 30.5mm - - 240g
RS Stock No. 833-8158
Mfr. Part No.MAP55-4003
TWD8,123.00
Each
units
±5/±15 V dc - 2.5 A, 6 A, 500 mA 55W 90 132 V ac, 175 264 V ac 4 U Bracket U Bracket 152.4mm 83.1mm 40.6mm - - 550g
RS Stock No. 122-7058
Mfr. Part No.ECM100UT33
BrandXP Power
TWD4,481.00
Each
units
5/±15 V dc - 3 A, 10 A, 800 mA 100W 90 264 V ac, 120 370 V dc 3 Chassis Mount Open Frame 114.3mm 63.5mm 27mm - - 180g