Power Supplies & Transformers

RS offers a wide selection of power supply units (PSUs) for use in various domestic and industrial applications. Our range includes AC-DC power supply adapters and desktop computer power supply suitable for domestic applications, as well as bench power supplies, DIN Rail and panel mount power supplies, and switch mode PSUs.

What is a power supply?

Power supplies are a crucial aspect of any electrical equipment, providing reliable power to machinery, computers or other technology devices. A power supply changes a source electric current, such as a mains plug, to the correct voltage, frequency and current needed to operate the equipment safely.

How do power supplies work?

A power supply is used to reduce mains or three phase electricity, often at 240 Vac or 440 Vac down to a voltage that is usable, such as 12 Vdc. The PSU also converts the current rating, in the form of AMPS, to a level that is safe for the device to be powered.

What is the difference between types of power supply?

There are three main types of power supply: unregulated, linear and switch mode.

An unregulated power supply is the most basic type, they typically output a lot of ripple voltage (i.e. rapidly-varying instability) on the DC output power. If the input voltage varies, the output voltage will vary by a proportional amount. The advantage of an unregulated supply is that it's affordable, simple, and efficient.

A linear power supply is similar in construction to an unregulated power supply, with the advantage of an added transistor circuit to regulate the output to a fixed voltage.

A switch mode power supply, also known as switching power supply, works by stabilising the mains electricity voltage in order to produce a clean, efficient and stable output voltage.

What is power supply efficiency?

Power supply efficiency is known as the amount of power actually provided to the internal circuitry, divided by the amount of power drawn from the mains supply. If a PSU is 50% efficient and is required to provide 50 Watts of power, 100 Watts will be drawn from the main supply. The extra 50 W is lost as heat. A 90% efficient PSU would draw 56 W in the same circumstances.

What industries can power supplies be used in?

Here are some common industries and environments power supplies can be used in:

  • Machine and panel building
  • Maintenance
  • Marine & offshore
  • Military & defence
  • Automotive
  • Electrical wiring
  • Domestic
  • Food and beverage
  • Manufacturing
Power Supplies
Power Supplies
Renewable Energy
Renewable Energy
Transformers
Transformers
Voltage Converters
Voltage Converters

27285 표시되는 제품 Power Supplies & Transformers

1 / 999+
XP Power Switching Power Supply, LCE80PS05, 5V dc, 12A, 60W, 1 Output, 115/230V ac Input Voltage
  • RS 제품 번호 200-6341
  • 제조사 부품 번호 LCE80PS05
개당
₩67,285.20
Mascot 7.5W Plug-In AC/DC Adapter 15V dc Output, 500 → 800mA Output
  • RS 제품 번호 224-3849
  • 제조사 부품 번호 8713000153
개당
₩96,199.60
Phoenix Contact 85 → 264 V ac, 100 → 350V dc Input DIN Rail Uninterruptible Power Supply (48W), MINI-DC
  • RS 제품 번호 665-7854
  • 제조사 부품 번호 2866640
개당
₩778,470.40
Phoenix Contact QUINT POWER Switched Mode DIN Rail Power Supply, 85 → 264V ac ac Input, 24V dc dc Output, 20A
  • RS 제품 번호 540-779
  • 제조사 부품 번호 2866776
개당
₩677,194.80
XP Power JWL40 DC-DC Converter, 5V dc/ 8A Output, 9 → 36 V dc Input, 40W, Through Hole, +105°C Max Temp -40°C
  • RS 제품 번호 122-4503
  • 제조사 부품 번호 JWL4024S05
개당
₩132,690.40
Phoenix Contact Redundancy module, TRIO-DIODE/12-24DC/2X10/1X20 Series
  • RS 제품 번호 708-0438
  • 제조사 부품 번호 2866514
개당
₩167,940.40
Recom DC-DC Switching Regulator, Through Hole, 12V dc Output Voltage, 17 → 72V dc Input Voltage, 500mA Output
  • RS 제품 번호 917-6620
  • 제조사 부품 번호 R-78HB12-0.5/W
개당
₩27,203.60
Phoenix Contact STEP POWER Switched Mode DIN Rail Power Supply, 85 → 264V ac ac Input, 24V dc dc Output, 2.5A
  • RS 제품 번호 540-731
  • 제조사 부품 번호 2868651
개당
₩160,815.20
Phoenix Contact QUINT POWER Switched Mode DIN Rail Power Supply, 240V ac ac Input, 15V dc dc Output, 2A Output, 100W
  • RS 제품 번호 260-0950
  • 제조사 부품 번호 2904596
개당
₩174,952.80
RS PRO 60W Plug-In AC/DC Adapter 24V dc Output, 2.5A Output
  • RS 제품 번호 188-781
개당
₩35,945.60
Better World
RS PRO 20W Polycrystalline solar panel
  • RS 제품 번호 914-8457
개당
₩160,871.60
XP Power F Series DC-DC Converter, 5kV/ 2mA Output, 0 → 15 V dc Input, 10W, Through Hole, +70°C Max Temp -10°C
  • RS 제품 번호 136-0472
  • 제조사 부품 번호 F50
개당
₩357,707.60
Nuvotem Talema 115 V ac, 230 V ac, 2 x 18V ac Toroidal Transformer, 25VA 2 Output
  • RS 제품 번호 223-9424
  • 제조사 부품 번호 70064K
개당
₩67,210.00
Extech Power Supply, 382276, 1 → 30V, 1 → 20A, 600W, 1 Output, 230V ac Input Voltage
  • RS 제품 번호 288-0142
  • 제조사 부품 번호 382276
개당
₩944,166.08
Siemens SITOP PSU8200 Switched Mode DIN Rail Power Supply, 500V ac ac Input, 24V dc dc Output, 40A Output, 960W
  • RS 제품 번호 203-4068
  • 제조사 부품 번호 6EP3437-8SB00-0AY0
개당
₩1,159,339.60
TDK-Lambda Switching Power Supply, LS150-36, 36V dc, 4.3A, 150W, 1 Output, 248 → 273 V dc, 76 → 264 V ac,
  • RS 제품 번호 680-2821
  • 제조사 부품 번호 LS150-36
개당
₩70,951.20
TDK-Lambda i7A DC-DC Converter, 3.3 → 24V dc/ 33A Output, 18 → 60 V dc Input, 500W, PCB Mount, +125°C Max
  • RS 제품 번호 221-4268
  • 제조사 부품 번호 I7A4W033A033V-0F1-R
개당
₩128,968.00
Minwa Car Charger, 12 → 24V dc Input, 1.5 → 12V dc Output Plug In, 2A
  • RS 제품 번호 478-4667
개당
₩28,914.40
BEL POWER SOLUTIONS INC Switching Power Supply, CPA250-4530G, 3.3 V dc, 5 V dc, ±12 V dc, 2A, 250W, Quad Output, 90
  • RS 제품 번호 656-0457
  • 제조사 부품 번호 CPA250-4530G
개당
₩865,251.20
Myrra 12V dc 1 Output PCB Mount PCB Transformer, 1 → 3W
  • RS 제품 번호 183-8316
  • 제조사 부품 번호 48024
개당
₩13,460.80
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