The R-type transformer is a specialized type of audio and precision transformer known for its unique construction. It operates on the standard principle of electromagnetic induction. Its defining feature is a core made from continuously wound oriented silicon steel strip, forming a seamless, circular cross-section that resembles the letter "R" in its final shape. The primary and secondary windings are wound directly onto the two opposing sides of this smooth, round core. When AC current flows through the primary winding, it creates a magnetic field that circulates efficiently through the continuous, grain-oriented core, inducing a voltage in the secondary winding.
Product Features
1. Low Magnetic Flux Leakage and Stray Loss: The seamless, circular core with oriented grain steel provides an excellent, low-reluctance magnetic path. This results in significantly lower leakage flux and electromagnetic radiation compared to EI cores.
2. Low Vibration and Acoustic Noise: Due to the absence of air gaps in its core (unlike laminated EI types) and its robust, unitary construction, the R-core transformer exhibits minimal vibration and produces very little hum, making it ideal for sensitive audio applications.
3. High Efficiency and Compact Size: The efficient core design and reduced losses allow for a more compact size and higher power density per volume compared to traditional laminated transformers of equivalent power rating.
Common Applications
R-type transformers are preferred in applications demanding high performance and low noise:
1. High-Fidelity Audio Equipment: Such as preamplifiers, DACs, and power amplifiers where clean power is critical.
2. Medical Electronic Equipment: Where low electromagnetic interference (EMI) is mandatory.
3. Precision Measuring Instruments and other sensitive electronic devices.
