The TRF MT909-3 Standard Transformer is a reliable mains power transformer designed to convert a 240VAC input into a 9-0-9VAC centre-tapped output with a 3A secondary current. It is ideal for linear power supplies, audio amplifiers, industrial controls, instrumentation, DIY electronics, and general-purpose electronic applications requiring a centre-tapped AC supply.
The 9-0-9VAC centre-tapped secondary winding provides excellent flexibility for designing dual-rail ( 9V) power supplies after rectification and regulation. It can also be used as an 18VAC secondary by utilising the two outer terminals, making it suitable for a wide range of low-voltage AC applications.
Built with high-quality magnetic materials and durable windings, the TRF MT909-3 provides excellent electrical isolation between the primary and secondary circuits, ensuring safe, stable, and dependable operation. Its robust construction is designed for continuous use in commercial, industrial, OEM, laboratory, and educational environments.
Whether you're building power supplies, repairing electronic equipment, or designing custom electronic systems, the TRF MT909-3 delivers consistent performance and long-term reliability.
Features
Standard mains power transformer
240VAC primary input
9-0-9VAC centre-tapped secondary output
3A secondary current
Centre-tapped winding for dual-voltage power supplies
Excellent electrical isolation between primary and secondary
Stable AC voltage output
Durable construction for long service life
Suitable for continuous operation
Ideal for commercial, industrial, and OEM applications
Specifications
Part Number: TRF MT909-3
Product Type: Standard Transformer
Primary Input Voltage: 240VAC
Secondary Output Voltage: 9-0-9VAC (Centre Tap)
Secondary Current: 3A
Output Type: Centre-Tapped AC
Transformer Type: Standard Mains Transformer
Applications
Linear power supplies
Dual-rail ( 9V) power supplies
Audio amplifiers and preamplifiers
Industrial control equipment
Instrumentation and measurement systems
DIY electronics projects
Laboratory power equipment
OEM electronic products
Electronic repair and maintenance
Educational and technical training equipment
What's in the box
1 x TRF MT909-3 Standard Transformer 240VAC to 9-0-9VAC 3A Centre Tap
