50Hz/60Hz Mini Low Frequency Power Transformer

A mini low-frequency power transformer is used to step up or step down AC voltage at standard mains frequencies — 50Hz or 60Hz. It’s commonly used in AC adapters, power supplies, and electronic circuits requiring isolated, stable low-voltage AC. 

 Key Features:

• Frequency: 50Hz / 60Hz (compatible with global AC mains)
• Primary Voltage: Often 110V or 220V AC (depending on region)
• Secondary Voltage: Common outputs include 6V, 9V, 12V, 15V, 24V AC
• Power Rating: Varies (e.g., 1VA to 30VA+)
• Isolation: Provides galvanic isolation between input and output
• Core Type: Usually EI-core (laminated iron core)

 Applications:

• Linear power supplies (after rectification and regulation)
• Audio amplifiers
• DIY electronics (as a safe AC source)
• Home appliances

 Important Notes:

• Output is AC, not DC – must use a rectifier + filter for DC
• Not suitable for switching frequency applications (like SMPS)
• Must match voltage and current rating to your circuit

 Example Use:

To convert 220V AC to 12V AC for an amplifier project:

1. Transformer: 220V → 12V AC
2. Bridge Rectifier: Convert to DC
3. Capacitor: Smooth the voltage
4. Voltage Regulator (optional): Provide stable DC output