A-79J

Audio Transformers Overview

The Triad Magnetics A-79J is a J Series interstage audio transformer designed for demanding broadcast and professional audio applications. It features a Mu-Metal shielded case to minimize electromagnetic interference and ensure signal integrity. The component operates with a primary impedance of 1k ohms and secondary impedances of 200 ohms and 50 ohms, providing a 2.2:1 turns ratio. It supports a frequency range of 20Hz to 15kHz and handles up to 200mW of power. Key electrical specifications include a primary DC resistance of 302 ohms and a secondary DC resistance of 138 ohms.

Audio Transformers Feature Summary

• Mu-Metal shielded case construction for enhanced durability and precision in demanding designs
• Flexible configuration allows amplifiers to exceed broadcast standards
• Interstage coupling capability for professional audio signal transmission

Audio Transformers Applications

• Broadcast amplifier interstage coupling
• Professional audio equipment signal transformation
• High-fidelity audio circuit design

Audio Transformers Procurement Notes

Verify the specific datasheet version and manufacturer documentation to confirm exact electrical tolerances and mechanical dimensions before integration. Ensure compatibility with chassis mounting requirements as specified in official Triad Magnetics literature. Cross-reference part numbers carefully to distinguish between similar J Series variants. Confirm regulatory compliance status such as RoHS if required by your project specifications.

Audio Transformers Selection Notes

Select the A-79J when Mu-Metal shielding is critical for noise reduction in interstage applications. Consider its 1k primary impedance and 2.2:1 ratio for matching specific amplifier stages. Evaluate the 20Hz to 15kHz frequency response against system bandwidth needs. Compare physical chassis mount constraints with available enclosure space. Review power handling limits relative to signal levels in the target circuit.

Audio Transformers Part Context

The A-79J belongs to Triad Magnetics' J Series, which emphasizes flexibility and cost-effective construction while maintaining performance suitable for broadcast standards. This series includes various input and interstage transformers designed for robust operation in professional environments. The A-79J specifically targets applications requiring precise impedance matching and interference rejection through its specialized shielding.

Audio Transformers Replacement Considerations

Consult official Triad Magnetics substitution guides for direct replacements. Verify that alternative components match the 1k primary impedance, 2.2:1 ratio, and Mu-Metal shielding characteristics. Ensure frequency response and power handling capabilities are equivalent or superior to avoid performance degradation in sensitive audio circuits.