The Volder PS-303A Variable DC Power Supply is a high-stability, linear regulated power source designed for hardware engineers, repair technicians, and academic labs. With a fully adjustable output range of 0-30 Vand a maximum current threshold of 3 A, it allows you to simulate battery outputs or deliver exact voltage rails to sensitive circuits. Equipped with integrated short-circuit protection and automatic current-limiting regulation, the PS-303A ensures that a minor wiring mistake on your breadboard wont fry your expensive development components.
Fully Adjustable DC Output: Dual control knobs let you fine-tune voltage (0-30 V) and current (0-3 A) with high precision.
Overcurrent & Short-Circuit Protection: Automatically switches to Constant Current (CC) mode or sounds a warning when a short circuit is detected, safeguarding your target board.
Low Noise & Ripple: Linear design guarantees exceptionally clean output power, making it safe for noise-sensitive RF and audio prototyping projects.
Active Cooling Fan: Built-in rear thermal exhaust fan triggers automatically to keep internal transformers cool during long, high-load testing sessions.
| Feature | Specification |
| Model | PS-303A |
| Input Voltage | 220V AC pm10 50Hz (Standard Pakistan Wall Outlet) |
| Output Voltage Range | 0 to 30 V DC (Continuously Adjustable) |
| Output Current Range | 0 to 3 A (Continuously Adjustable) |
| Display Precision | pm1for Voltage and Current readings |
| Protection Modes | Current Limiting, Short-Circuit, and Over-Temperature |
| Cooling Method | Intelligent Temperature-Controlled Fan |
Smartphone & Laptop Repair: Injecting voltage into a motherboard to easily locate shorted SMD capacitors via thermal signatures.
Microcontroller Prototyping: Safely stepping down to exactly 3.3V or 5V to power ESP32, STM32, or Arduino projects.
Electroplating & Chemical DIY: Providing constant current for precise backyard metal plating or anodizing.
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