DC Power Supply

Product Specifications

Technical details and manufacturing context for DC Power Supply

Definition

A DC power supply is an electrical apparatus designed to convert alternating current from a mains power source into a stable, regulated direct current output. It serves as a critical component in electronic systems by providing consistent voltage and current levels, protecting sensitive circuits from power fluctuations, and enabling precise control over electrical parameters for testing, development, and operational applications. This device typically features adjustable output voltage and current, with ranges such as 0–30 V and 0–5 A, and a maximum output power of 150 W. It includes protection mechanisms like overvoltage, overcurrent, and overtemperature safeguards. The unit operates with an input voltage range of 100–240 V AC and achieves an efficiency of at least 85%. Voltage regulation is maintained within ≤0.01% + 1 mV, and load regulation within ≤0.02% + 2 mV for a 10% to 100% load change. Ripple and noise are kept below 1 mVrms. The device is designed for bench-top use with dimensions of 215×88×280 mm and a weight of approximately 3.2 kg. It operates within an ambient temperature range of 0–40°C. The display accuracy is ±(0.5% + 2 digits) for voltage and current readings. Constructed with materials such as aluminum alloy, copper, silicon, plastic polymers, and ferrite cores, this power supply is suitable for various electronic testing and development applications. It is essential to verify model-specific specifications and standards with the legal manufacturer or supplier before procurement or use.

Working Principle

The DC power supply operates by first stepping down the AC input voltage through a transformer, then rectifying it using diodes to convert AC to pulsating DC. This is followed by filtering with capacitors to smooth the waveform, and finally regulation through electronic circuits (linear or switching) to maintain a constant output voltage despite variations in input or load conditions. Advanced units incorporate feedback control loops, protection circuits, and digital interfaces for monitoring and adjustment.

Common Materials

Aluminum Alloy, Copper, Silicon, Plastic Polymers, Ferrite Core

Technical Parameters

Parameter	Typical range	Notes & selection driver
Output VoltageRequired	0–30 volts	The regulated DC voltage provided by the power supply
Output CurrentRequired	0–5 amperes	Maximum continuous current the power supply can deliver
Output PowerRequired	150 watts	Maximum power output calculated as voltage multiplied by current
Voltage RegulationRequired	≤0.01% + 1 mV percent	Percentage change in output voltage from no-load to full-load conditions
Ripple and NoiseRequired	≤1 mVrms millivolts	AC component superimposed on the DC output, measured peak-to-peak
Input Voltage RangeRequired	100–240 volts	Acceptable AC input voltage range for proper operation
EfficiencyRequired	≥85% percent	Ratio of output power to input power, indicating energy conversion effectiveness
Operating TemperatureRequired	0–40 degrees Celsius	Ambient temperature range within which the power supply operates within specifications
Load Regulation	≤0.02% + 2 mV	From 10% to 100% load change
Line Regulation	≤0.01% + 1 mV	For ±10% input voltage variation
Protection	OVP, OCP, OTP	Overvoltage, overcurrent, overtemperature
Display Accuracy	±(0.5% + 2 digits)	Voltage and current display
Dimensions (W×H×D)	215×88×280 mm	Bench-top form factor
Weight	3.2 kg	Approximate net weight

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Transformer
Steps down or isolates the AC input voltage to appropriate levels for rectification

Material: Copper windings on laminated iron or ferrite core
Rectifier Circuit
Converts AC voltage to pulsating DC using diodes arranged in bridge configuration

Material: Silicon diodes on printed circuit board
Filter Capacitors Part
Smooths the pulsating DC output from the rectifier to reduce ripple voltage

Material: Aluminum electrolytic or film capacitors
Voltage Regulator
Maintains constant output voltage despite input variations or load changes

Material: Integrated circuit or discrete transistors on heat sink
Heat Sink Part
Dissipates heat generated by power components to prevent overheating

Material: Aluminum alloy with finned design
Control Panel
Provides user interface for voltage/current adjustment, display, and monitoring

Material: Plastic housing with membrane switches or rotary encoders
Output Terminals Part
Connection points for attaching load devices to receive DC power

Material: Copper alloy binding posts or banana jacks
Protection Circuitry
Safeguards against over-voltage, over-current, short-circuit, and thermal overload conditions

Material: Electronic components on printed circuit board
Cooling Fan Optional
Forced air cooling for high-power units to maintain optimal operating temperature

Material: Plastic fan blades with DC brushless motor
Digital Interface
Enables remote control, programming, and monitoring via communication protocols

Material: Electronic components with communication ports

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for DC Power Supply.

Manufacturers of DC Power Supply

12 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

MEWOI Electronics Co., Ltd

Guangzhou, Guangdong, CN

Also makes: High Voltage Generator, Current Transformer, Surge Protection Device and 6 more