Center Tapped Step Down Transformer 220V 12V-0-12V 1A
110.00 EGP
This center-tapped (CT) transformer converts 220V AC input to a dual 12V-0-12V AC output at 1A current, providing 24V total (12V + 12V) with a middle tap (0V) for flexible rectification and dual-voltage applications. Ideal for low-power AC/DC power supplies, amplifiers, and electronics projects.
Description
Key Specifications:
✔ Input Voltage: 220V AC (50/60Hz)
✔ Output Voltage: 12V-0-12V AC (center-tapped, 24V total)
✔ Current Rating: 1A (per 12V winding, 0.5A if using full 24V)
✔ Power Capacity: 12VA (12V × 1A)
✔ Winding Material: Copper (low-loss, high-efficiency)
✔ Core Type: Laminated Iron Core (reduces hum/noise)
✔ Insulation Class: Class B (130°C) – Heat-resistant enamel coating
✔ Mounting: Vertical or horizontal chassis mount (with fixing brackets)
Features & Benefits:
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Center-Tapped Design – Enables full-wave rectification (requires 2 diodes instead of 4).
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Dual Voltage Output – Use 12V AC (half winding) or 24V AC (full winding).
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Low Noise & Vibration – Robust core minimizes buzzing.
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Overload Protection – Safely handles brief current surges.
Typical Applications:
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Power Supplies – For ±12V DC circuits (after rectification/filtering).
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Audio Amplifiers – Dual-rail voltage for op-amps, preamps.
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Battery Chargers – Low-current charging circuits.
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DIY Electronics – Bench power supplies, Arduino/Raspberry Pi projects.
Wiring Guide:
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Primary (Input): Connect 220V AC to the two input wires.
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Secondary (Output):
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12V AC: Use 0V (center tap) + 12V (for half voltage).
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24V AC: Use both 12V ends (ignore center tap).
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Rectification: For DC output, add a bridge rectifier (or two diodes for CT full-wave).
Safety Notes:
⚠ High Voltage Risk – Ensure proper insulation and grounding.
⚠ Do Not Overload – Exceeding 1A may cause overheating.
⚠ Use a Fuse – Recommended on the primary side (e.g., 250mA slow-blow).
Package Includes:
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1× 220V to 12V-0-12V 1A Center-Tapped Transformer
Why Choose This Transformer?
✅ Compact & Efficient – Reliable performance for low-power needs.
✅ Versatile Outputs – Supports 12V, 24V, or ±12V DC with rectification.
✅ DIY-Friendly – Easy integration into custom power supplies.










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