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YH 305D DC SUPPLY

YH 305D DC SUPPLY

The YH‑305D is a compact, stabilized DC power supply delivering 0–30 V and 0–5 A, featuring a dual display, coarse/fine voltage & current adjustment, and short-circuit/current-limit protection. Fully enclosed in sturdy metal and CE-certified, it’s ideal for electronics labs, power supply testing, and DIY repairs.

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YH‑305D DC Power Supply

Introducing the YH‑305D DC Power Supply, a reliable workhorse for electronics development, repair, and testing.

This bench-top unit delivers clean, adjustable DC output—up to 30 V, 5 A—with high precision and stability. Equipped with dual LED digit displays, users can easily monitor voltage and current simultaneously. Control is managed via separate coarse and fine knobs, perfect for tuning sensitive circuits.

Built-in constant-voltage (CV) and constant-current (CC) functionality allows automatic switching to protect devices under load. Designed with safety as a priority, it includes short-circuit and overload protection, plus CE certification . The all-metal enclosure includes a cooling fan to prevent overheating during prolonged use.

🛠 Technical Details

Parameter Specification
Input Voltage 110/220/230/240 V AC, 50/60 Hz
Output Voltage 0–30 V DC, continuously adjustable
Output Current 0–5 A with CC & CV modes
Voltage Stability ≤ 0.01% + 2 mV
Current Stability ≤ 0.1% + 3 mA; ripple noise ≤ 2 mA rms
Protection Features Short-circuit, overload, thermal
Ripple & Noise ≤ 1 mV rms (voltage), ≤ 2 mA rms (current)
Dimensions ~130 × 255 × 150 mm
Weight ~4.6 kg
Display Dual three-digit LED meters

⚠️ Precautions & Safety Tips

  • Ensure the unit is placed on a stable, ventilated surface for proper cooling.

  • Use fine adjustment first for voltage before turning knobs to zero to prevent overshoot.

  • When load current exceeds limit, the supply switches to CC mode automatically.

  • In case of a short, the unit protects and then self-recovers in around 1 second

  • Allow a warm-up period after switching on for voltage to stabilize.

💡 Use Cases & Applications

  • Electronics Development – Power microcontroller boards, sensors, and development kits.

  • Component Testing – Ideal for LED testing, charging modules, and evaluating circuits.

  • Portable Device Repair – Used for smartphones, laptops, and USB device repairs.

  • Lab & STEM Training – Entry-level supply suitable for educational electronics experiments in classrooms and labs.

  • Drone & IoT Charging – Useful for charging small batteries and powering IoT/drone modules during setup or testing.

🛠️ Pair With 

🎥 YouTube Tutorial

See this hands-on overview video showcasing the YH‑305D, highlighting voltage/current adjustment, CV/CC response, and protection reset

🏁 Conclusion & Value Proposition

Compact yet powerful, the YH‑305D DC Power Supply offers precise voltage/current control, strong protection features, and reliable performance in a rugged metal housing. Whether for prototyping, repair, or educational use, it’s an excellent bench power tool.

Available now at Electroway — power your projects with confidence.

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