12 Volt DC 30 Amp Power Supply

This high-current 12V DC power supply is designed to deliver up to 30A, making it ideal for testing automotive circuits, high-power LED systems, or DIY projects requiring stable low-voltage power.

The design uses an L200 voltage regulator IC to control the output, supported by six TIP2955 power transistors to handle the high current. A 7812 voltage regulator ensures a stable reference voltage, while a 35A step-down transformer (220V → 24V or 110V → 24V) provides the necessary input AC power.

Key Features:

• Output: 12V DC, up to 30A
• Voltage Regulation: L200 + 7812 IC
• Power Stage: 6 × TIP2955 transistors
• Transformer: 35A, 220/24V or 110/24V AC
• Applications: High-current electronics testing, automotive circuits, LED systems

Tip: Proper heatsinking and ventilation are essential for the TIP2955 transistors. Always test with a dummy load before connecting sensitive electronics.