Skip to Content
  1. All products
  2. 🧬 Discrete Components
  3. ⚡ Transformers
  4. 12-0-12 Center Tapped Transformer - 1A Step Down
  5. ⚡ Transformers
Pricelist: Retail Price (B2C) Pricelist
Pricelist: Retail Price (B2C) Pricelist
12-0-12 Center Tapped Transformer - 1A Step Down

12-0-12 Center Tapped Transformer - 1A Step Down

(0 review)
SpecificationDetails
Input Voltage220V - 240V AC
Output Voltage12V - 0 - 12V AC
Output Current1.0 Ampere (1A)
TypeCenter-Tapped Step-Down
Core MaterialHigh-Grade Silicon Steel
WindingPrecision Copper / Copper-Clad
Price
₹ 165.25 ₹ 165.25
(Tax included)

Barcode: 897303

Product Description

The 12-0-12 1A Center-Tapped Transformer is a versatile and reliable electromagnetic component designed for stable AC-to-AC voltage reduction. This 1-Ampere model is a popular choice for hobbyists and engineers alike, providing enough current to power multiple microcontrollers, relays, or small DC motors simultaneously. Its center-tapped secondary winding makes it exceptionally efficient for creating balanced dual-rail power supplies, allowing for positive and negative voltage outputs (+12V and -12V) which are critical for operational amplifier (Op-Amp) circuits and high-quality audio pre-amplifiers.

Key Features

  • Dual-Rail Output Capability: Provides a 12V-0-12V AC configuration, perfect for building symmetrical power supplies or full-wave rectification circuits.

  • Balanced 1A Power: Delivers a consistent 1-Ampere current, offering a solid middle ground between low-power 500mA units and bulkier 3A transformers.

  • Low-Noise Core Design: Features a laminated steel core engineered to reduce mechanical humming and minimize electromagnetic interference (EMI) in sensitive circuits.

  • Robust Mounting Brackets: Includes integrated metal tabs for secure screw-down mounting inside project boxes or onto wooden chassis.

  • Tinned Flexible Leads: Comes with pre-tinned, color-coded input and output wires for easy soldering and quick identification during assembly.

Technical Details

  • Secondary Configuration: 3-wire output (12V, 0V, 12V).

  • Insulation Strength: High-voltage grade insulation between primary and secondary windings for enhanced user safety.

  • Phase: Single-Phase AC operation.

Prototyping and Engineering Tips from Robogears

  • Full-Wave Efficiency: To create a standard 12V DC supply, use the center-tap (0V) as your Ground and connect the two 12V outer wires to a pair of 1N4007 diodes. This "Full-Wave Center-Tap" configuration is more efficient and generates less ripple than a standard bridge rectifier on a single-secondary transformer.

  • High-Voltage Awareness: The primary side (Input) handles lethal 220V AC. Always insulate these connections with high-quality heat-shrink tubing and ensure the transformer is fused. A 0.5A fuse on the primary side is recommended for added safety.

  • Voltage Peak Calculation: Remember that the 12V AC output will result in a peak DC voltage of approximately 16.9V after rectification and filtering ($12 \times 1.414$). If your circuit requires a precise 12V DC, use a linear regulator like the LM7812 with a proper heatsink.

  • Smoothing Your Signal: For a 1A load, use at least a 2200uF electrolytic capacitor on the DC output to minimize voltage ripple and provide a "clean" power source for microcontrollers like Arduino or ESP32.

Package Includes

  • 1 x 12-0-12 12V 1A Center-Tapped Step-Down Transformer

Disclaimer: This component involves high-voltage AC electricity. Installation should only be performed by individuals with proper electrical knowledge. Ensure the load does not exceed the 1A rating to prevent overheating. Always use an Earth connection if mounting inside a metal enclosure.