Korad KA3005D 30V 5A Variable DC Power Supply
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Precision, stability, and reliability — the Korad KA3005D offers laboratory-grade DC output control for engineers, students, and makers. With 30 V / 5 A capacity, fine-tune knobs, and a clean digital display, it’s a long-time favourite in electronics labs.
Overview
The Korad KA3005D is a linear-regulated power supply that balances cost, reliability, and accuracy. Designed for engineers, technicians, and students alike, it provides a highly stable DC output with both coarse and fine voltage and current adjustments. Despite its modest price, the KA3005D performs close to far more expensive bench supplies, earning its place on electronics benches worldwide.
Key Features & Specs
- Output: 0–30 V, 0–5 A with fine and coarse adjustment.
- Linear-regulated design ensures low noise and ripple.
- Bright LED digital display for simultaneous voltage and current readout.
- Over-voltage, over-current, and short-circuit protection.
- Constant Voltage (CV) and Constant Current (CC) operating modes.
- Cooling fan with thermal control for long service life.
- USB or RS-232 versions available for PC control (KA3005P model).
- Solid metal chassis with carrying handle.
Pros
- Reliable, clean output suitable for analog and digital circuits.
- Excellent build quality for its price range.
- Accurate and easy-to-read front panel.
- Popular and well-documented — plenty of community support.
- Long lifespan, proven in labs and educational use.
Cons
- Slightly noisy cooling fan during high load.
- Coarse control knobs can feel stiff.
- Lacks memory presets or PC logging in the base model.
Who It’s For
- Electronics engineers and technicians who need a dependable bench PSU.
- Hobbyists and students learning about regulated DC supplies.
- Labs requiring reliable linear supplies for analog testing.
Verdict
The Korad KA3005D remains one of the most cost-effective and reliable linear bench supplies on the market. While simple, it delivers stable, accurate power and durability that rivals units many times its cost.