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

...
顯示內容 隱藏內容

篩選條件

正在檢視 261 - 280,共 4428 項產品
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庫存編號 753-7613
製造零件編號MPS-30-12
BrandMean Well
HK$545.00
單位
12 V dc - 2.5A 30W 88 264 V ac, 120 370 V dc 1 Chassis Mount Open Frame 101.6mm 65.8mm 23.5mm - - 160g
RS庫存編號 106-5848
製造零件編號LRS-100-48RS
BrandMean Well
HK$146.49
單位
48 V dc - 2.3A 110W 85 → 264 V ac, 120 → 373 V dc 1 Chassis Mount Enclosed 129mm 97mm 30mm - - 340g
RS庫存編號 289-5175
製造零件編號LPQ252-CEF
HK$3,228.36
單位
5/±12/±5 25 V dc - 6 A, 10 A, 35 A 250W 85 264 V ac, 120 300 V dc 4 Rack Mount Enclosed 262mm 127mm 76.2mm - - 1.4kg
RS庫存編號 414-020
製造零件編號SP-150-24
BrandMean Well
HK$588.70
單位
24 V dc - 6.3A 151W 85 264 V ac, 120 370 V dc 1 Chassis Mount Enclosed 199mm 99mm 50mm - - 760g
RS庫存編號 377-0752
製造零件編號ZWQ130-5222/A
BrandTDK-Lambda
HK$1,990.25
單位
5/±12/±15 V dc - 4 A, 15 A 130W 85 265 V ac, 120 370 V dc 4 Chassis Mount Open Frame 225mm 35mm 106mm - - 730g
RS庫存編號 424-447
製造零件編號RPT-160C
BrandMean Well
HK$775.86
單位
5/±15 V dc - 1 A, 3.6 A, 14 A 99W 90 → 264 V ac, 127 → 370 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 34.6mm - - 330g
RS庫存編號 166-6755
製造零件編號RAC04-05DC/277-E
BrandRecom
HK$1,923.29
毎管:12 個
Tube(s)
±5 V dc - ±400mA 4W 80 305V ac 1 Surface Mount Encapsulated 36.7mm 27.2mm 17.1mm - - 41g
RS庫存編號 103-4687
製造零件編號RPS-65-24
BrandMean Well
HK$145.16
單位
24 V dc - 2.71A 65W 80 → 264V ac 1 PCB Mount Open Frame 76.2mm 50.8mm 24mm - - 110g
RS庫存編號 106-5871
製造零件編號LRS-350-48RS
BrandMean Well
HK$334.61
單位
48 V dc - 7.3A 350W 90 132 V ac, 180 264 (By Switch) V ac, 240 370 V dc 1 Chassis Mount Enclosed 215mm 115mm 30mm - - 760g
RS庫存編號 751-1605
製造零件編號NPT42-M
HK$281.58
單位
5/±12 V dc - 3 A, 8 A, 700 mA 45W 90 264 V ac, 120 300 V dc 3 Chassis Mount Open Frame 101.6mm 50.8mm 28mm - - 140g
RS庫存編號 621-0607
製造零件編號RS-35-24
BrandMean Well
HK$403.52
單位
24 V dc - 1.5A 36W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 99mm 82mm 36mm - - 300g
RS庫存編號 122-7030
製造零件編號ECM100UQ43
BrandXP Power
HK$885.02
單位
5/±12/24 V dc - 2 A, 10 A, 800 mA 100W 90 264 V ac, 120 370 V dc 4 Chassis Mount Open Frame 114.3mm 63.5mm 27mm - - 180g
RS庫存編號 644-7310
製造零件編號PPS-200-24
BrandMean Well
HK$724.95
單位
24 V dc - 8.3A 150W 90 264 V ac, 127 370 V dc 1 Chassis Mount Open Frame 127mm 76.2mm 34.6mm - - 370g
RS庫存編號 106-5838
製造零件編號LRS-75-24
BrandMean Well
HK$168.90
單位
24 V dc - 3.2A 76.8W 85 → 264 V ac, 120 → 373 V dc 1 Chassis Mount Enclosed 99mm 97mm 30mm - - 300g
RS庫存編號 627-3822
製造零件編號XG3
BrandExcelsys
HK$1,170.67
單位
15 V dc - 20A 240W 85 264 V ac, 120 380 V dc 1 Chassis Mount Enclosed 269.75mm 127mm 40.4mm - - 100g
RS庫存編號 413-649
製造零件編號RQ-85D
BrandMean Well
HK$578.75
單位
5/±12/24 V dc - 1 A, 2 A, 6 A, 500 mA 84W 88 → 264 V ac, 125 → 373 V dc 4 Chassis Mount Enclosed 159mm 97mm 38mm - - 600g
RS庫存編號 770-3324
製造零件編號TXM 075-148
BrandTRACOPOWER
HK$398.77
單位
48 V dc - 1.6A 75W 90 264V ac 1 Chassis Mount Enclosed 129mm 99mm 38mm - - 380g
RS庫存編號 122-6574
製造零件編號EME05US03
BrandXP Power
HK$172.18
單位
3.3 V dc - 1.96A 5W 85 264V ac 1 PCB Mount Encapsulated 38.1mm 25.4mm 15.2mm - - 24g
RS庫存編號 122-7081
製造零件編號ECM60US12
BrandXP Power
HK$397.75
單位
12 V dc - 5A 60W 90 264 V ac, 120 370 V dc 1 Chassis Mount Open Frame 101.6mm 50.8mm 27mm - - 150g
RS庫存編號 418-1945
製造零件編號TML 10124
BrandTRACOPOWER
HK$458.95
單位
24 V dc - 416mA 10W 85 264 V ac, 85 370 V dc 1 PCB Mount Encapsulated 64mm 45mm 20.5mm - - 95g