Linear DC power supply
The Ay series of precision linear DC regulated voltage and current power supplies employs a linear series configuration combined with thyristor adjustment mode, offering exceptional high accuracy, excellent stability, a low ripple coefficient, and strong anti-interference capabilities. These units are primarily used in research institutions, laboratories, and electronic production lines where high-precision DC regulated voltage and current testing is required. They fall under the categories of linear power supplies, precision test power supplies, digital-display DC power supplies, and DC power supply units. Currently, numerous manufacturers of DC motors, DC controllers, capacitors, relays, resistors, and other components have adopted the WYK system DC regulated voltage and current power supply for product testing and aging processes. Additionally, many research institutions, military electronics research institutes, aviation electrical equipment manufacturers, non-ferrous metal enterprises, and other organizations utilize these power supplies for high-precision scientific research, earning widespread acclaim.
Performance characteristics of linear DC power supplies:
- Output Display: LED digital display for output voltage and current;
- Power supply specifications: output voltage 0–600 V, output current 0–1000 A, and output power up to 300 kW (available as an option);
- Constant Voltage/Constant Current Mode: The system features automatic switching between constant voltage and constant current modes; both voltage and current values can be linearly adjusted from zero to their rated values;
- Protection functions: overvoltage protection, overcurrent protection, overheating protection, undervoltage protection, and overload protection;
- Short-circuit characteristics: The device shall be able to withstand prolonged short-circuit conditions during normal operating conditions;
- External compensation: This device supports optional external compensation, which can reduce voltage drops caused by long output circuits;
- Overvoltage Protection Threshold: The output overvoltage protection threshold is adjustable; upon triggering protection, the output is cut off and locked, and the system can be restored by restarting the device;
- External control function: Optional 0–5 V or 4–20 mA signal input to control the output voltage and current of the power supply; (Optional)
- Timer function: Optional timed power-on/off function; (Optional)
- Communication Functions: Optional data interface for connection and control with a computer or connection with a PLC (Optional).
Differences between linear DC power supply products:
- Improved electronic circuit design, optimized safety performance, and enhanced protection features;
- The pipe-type heat dissipation channel effectively reduces temperature rise and ensures more stable performance;
- Optimized rectification and filtering technology for high-precision power output specifications;
- Optimize signal transmission technology to effectively improve power supply accuracy;
- Provides linear DC power supply parameters superior to those of switching-type and silicon rectifier-type power supplies, featuring a lower ripple coefficient and enhanced anti-interference capability.
Applications for linear DC power supplies:
- Motor products:Electric vehicle motors, electric vehicle controllers, DC motor testing, etc.;
- Electrical Equipment Category: LED testing and aging; energy-saving bulb testing and aging; lighting fixture testing; tungsten filament vaporization, etc.;
- Automotive Products: automotive electronics, high-power DC motors, automotive motor controllers, vehicle lighting systems, cigarette lighter systems, automotive audio & video systems, etc.;
- Electronic Components: capacitors, resistors, relays, transistors, sensors, etc.;
- Display products: display screens, liquid crystal displays (LCDs), touchscreens, car DVD systems, and mobile phone displays;
- Electrochemical fields: electrolysis, electroplating, anodic oxidation, non-ferrous metals research, etc.;
- Testing and R&D for other products requiring DC power supply, such as magnetrons and photovoltaic inverters.
Optional features: (Optional)
- External control function: Optional 0–5 V or 4–20 mA signal input to control the output voltage and current of the power supply
- Timer function: Optional timer-based power-on/off function;
- Communication functions: Optional data interface for connection to a computer for control purposes, or for connection to a PLC.
| AC input | Up to 10 kW, single-phase, 220 V ±10% |
| | For capacities above 10 kW: three-phase, 380 V ±10% |
| specifications | 0–30 V, 0–50 V, 0–100 V, 0–150 V, 0–200 V, 0–300 V, 0–500 V, 0–800 V, 0–1000 V, 0–1500 V, 0–2000 V, 0–3000 V (available as optional options) |
| | 0–10 A, 0–30 A, 0–50 A, 0–100 A, 0–150 A, 0–200 A, 0–300 A, 0–500 A, 0–1 kA, 0–1.5 kA, 0–2 kA, 0–3 kA, 0–5 kA (available as optional options) |
| DC output | Voltage: 0–Nominal Value V (adjustable); Current: 0–Nominal Value A (adjustable) |
| Voltage regulation accuracy | Source effect: ≤0.1% RMS (the rate of change of the output voltage caused by a ±10% variation in the input power supply voltage) |
| | Time drift: ≤0.3% RMS (the output voltage change rate caused by continuous power supply operation for more than 8 hours) |
| | Temperature coefficient: ≤0.03% RMS/V°C (the rate of change of the output voltage caused by variations in ambient temperature within the specified ambient temperature range) |
| | Load effect: ≤0.3% RMS (the output voltage change rate caused by variations in the power supply output current from zero to the rated value) |
| Flow stability accuracy | Source effect: ≤0.1% RMS (the rate of change of the output voltage caused by a ±10% variation in the input power supply voltage) |
| | Time drift: ≤0.8% RMS (the output voltage variation rate caused by continuous power supply operation for more than 8 hours) |
| | Temperature coefficient: ≤0.03% RMS/V°C (the rate of change of the output voltage caused by variations in ambient temperature within the specified ambient temperature range) |
| | Load effect: ≤0.3% RMS (the output voltage change rate caused by variations in the power supply output current from zero to the rated value) |
| output ripple | Stabilization range: ≤0.1% + 10 mV (rms) (root mean square value) |
| | Stable current condition: ≤0.2% + 10 mA (rms) (effective value) |
| Output Display | 3½-digit digital display; Accuracy: ±1% + 1 digit (4½-digit display optional) |
| | Display format: 00.00V–19.99V; 000.0V–199.9V; 0000V–1999V; |
| Voltage–Current Settings | 10 Potentiometers |
| Overvoltage Protection | Equipped with built-in O.V.P protection; the protection threshold is set at the rated value +5%. Upon activation of the protection function, the output will be shut down, and the system must be restarted to unlock it. |
| overcurrent protection | Overload, short circuit, constant current output |
| Temperature Protection | The device features built-in O.T.P. protection with a protection setpoint of 85°C ± 5% (heater temperature); upon activation of the protection function, the output is shut down. |
| Output polarity | The positive (+) and negative (-) outputs may be grounded at any point. |
| Heat dissipation method | air blast cooling |
| operational environment | Indoor use design: Temperature: 0°C–40°C; Humidity: 10%–85% RH |
| Storage Environment | Temperature: -20°C to 50°C; Humidity: 10%–90% RH |
Aviation Ground Support
Suitable for aircraft ground power systems and aviation maintenance operations.
Onshore Power Supply
Shore power supplies electricity to docked ships from land grids, replacing on-board generators to cut fuel consumption and emissions.
Variable Frequency
Variable frequency power supply outputs adjustable voltage and frequency. It simulates global grid power for testing electrical equipment.
Military & Defense
Applicable to military electronic systems and specialized defense equipment testing.
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