Yihua 305D – DC Power Supply (5A/30V)

The Yihua 305D is a high-precision, linear DC power supply engineered for stability, accuracy, and safety. Delivering a continuously adjustable output of 0–30V DC and 0–5A, it is an indispensable workstation powerhouse designed specifically for mobile phone repairs, motherboard diagnostics, laboratory testing, and precision electronic engineering.

Equipped with dual LED digital displays, fine/coarse tuning knobs, and advanced short-circuit protection, the 305D provides the clean, reliable power required to safely troubleshoot and revive sensitive electronic components.

Key Features & Performance

• High-Precision Dual LED Display: Provides clear, independent digital readouts for both voltage and current in real-time, allowing you to monitor power consumption fluctuations during device boot-up or diagnostic testing.

• Coarse & Fine Adjustment Knobs: Features dedicated coarse and fine tuning potentiometers for both voltage and amperage. This allows you to dial in exact power parameters down to the decimal, preventing accidental over-voltage to delicate ICs.

• Constant Voltage (CV) & Constant Current (CC) Modes: Automatically switches between CV and CC modes based on the load, protecting your test circuits from drawing excessive current.

• Advanced Short-Circuit & Over-Current Protection: Features a rugged, responsive internal protection circuit that automatically cuts off or limits output when a short circuit is detected on the board, safeguarding both the power supply and the device under repair.

• Intelligent Thermal Management: Built with a rear-facing cooling fan coupled with internal temperature sensors. The fan engages automatically to dissipate heat efficiently, ensuring prolonged duty cycles during heavy-duty operation.

• Input Voltage: AC 110V/220V +/- 10% (50/60Hz)
• Output Voltage Range: 0~30V
• Output Current Range: 0~5A
• Display Accuracy:+/-1%
• Display Style: With 3 bit LCD display
• Working/Storage Environment: -10℃~40℃