🔌 12-0-12 Volt 3Amp Transformer (Center-Tapped Step-Down Transformer)

📦 Product Overview

The 12-0-12 Volt 3Amp Transformer is a high-current step-down transformer designed to convert 220V AC input into 12V-0-12V AC output with a maximum current capacity of 3 Amperes. It features a center-tapped secondary winding, making it ideal for dual power supply circuits, amplifier projects, and high-current DC power supply systems.

This transformer is widely used in audio systems, power supply units, battery chargers, and industrial electronic applications.

⚡ Electrical Specifications

🔄 Understanding 12-0-12 Output

The transformer provides:

• 12V AC between one 12V terminal and center (0)

• 12V AC between the other 12V terminal and center (0)

• 24V AC between the two 12V terminals

This allows:

✔ Dual ±12V DC supply
✔ 24V DC power supply (after rectification)
✔ High-current amplifier circuits

🏗 Physical Specifications

⭐ Key Features

✔ High current capacity (3A)
✔ Stable voltage output
✔ Durable laminated core
✔ Suitable for heavy-load circuits
✔ Easy installation
✔ Reliable long-term performance

🛠 Applications

This 3A transformer is ideal for:

• Audio power amplifiers

• DC regulated power supply units

• Battery charging circuits

• Inverter projects

• LED driver circuits

• Laboratory power supplies

• Industrial control circuits

🔧 Typical DC Power Supply Setup

To convert AC to DC:

1. Connect secondary to a bridge rectifier

2. Add large filter capacitor

3. Use voltage regulator (7812 / 7912) if needed

You can generate:

• +12V DC

• −12V DC

• 24V DC (single supply)

⚠ Safety Guidelines

• Always use fuse protection on primary

• Do not exceed 3A load

• Ensure proper ventilation

• Avoid short circuits

• Insulate all connections properly

🏆 Advantages

✔ Higher power handling than 600mA version
✔ Suitable for medium-power electronics
✔ Strong and durable construction
✔ Reliable for continuous operation