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DC Power Supplies

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About DC Power Supplies

DC power supplies accept an input power and output the desired form of DC power. Common forms of DC power supplies include linear power supplies, switching power supplies, DC-DC converters, and high voltage power supplies.  

Linear or series-regulated power supplies produce an output that is proportional to the input.  They contain rectifiers and filters similar to those on unregulated supplies but have a power transistor in series with the output. A sensing circuit monitors the output voltage, adjusting voltage drop across the transistor to hold output voltage at a preset level. These power supplies provide excellent line and load regulation, a low temperature coefficient, and very little ripple. Switching or switch-mode power supplies draw AC from the input line and rectify the current to charge their sizable input capacitor.  The capacitor stores the energy and provides a filtered DC voltage.  The DC voltage is then "chopped" at a high frequency (the switching frequency), transformed to the right level, and rectified again to provide the desired DC output.  

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Products & Services Related to DC Power Supplies

AC Power Sources
AC power sources provide alternating power and typically have adjustable output values for the testing of component response at various voltages, current and frequency levels.
Computer Power Supplies
Computer power supplies convert alternating current (AC) line to direct current (DC) line, needed by the computer.
Current Sources
Current sources provide reliable current for electrical component testing and for powering specialized components.
DC-AC Inverters
DC to AC inverters are used for converting direct current (DC) into alternating current (AC). They are also known as DC to AC converters.
DC-DC Converters
DC-DC converters accept DC input and provide regulated and/or isolated DC output in various applications including computer flash memory, telecommunications equipment, and process control systems.
Power Supplies
Power supplies are devices that produce AC or DC power.  This grouping includes current sources, DC power supplies, AC-DC adapters, DC-DC converters, AC power sources, and DC-AC inverters.
RF Generators
RF generators and high frequency power supplies provide the power required for plasma generation, induction heating, and radar or communications applications.

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Engineering Web: DC Power Supplies

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Part Numbers for DC Power Supplies

Part # Distributor Manufacturer Product Category Description
FA-24PS-90 Automationdirect.com Not Provided Power Supplies 24VDC power supply, 3.7A (90W), open frame includes DIN rail mounting kit
FA-24PS Automationdirect.com Not Provided Power Supplies 24VDC power supply, 1.2A (30W), open frame, includes DIN rail mounting kit
TWO DC POWER SUPPLIES TO netCOMPONENTS Not Provided Not Provided Not Provided
CAT 2003 AC/DC POWER SUPPLIES Mectronic Power_One Not Provided Power_One
AC-DC POWER SUPPLY netCOMPONENTS Not Provided Not Provided Not Provided

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