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Product Detailed Parameters
- Description：AUDIO XFMR 15K / 80K CHAS MNT
- Series：J
- Mfr：Triad Magnetics
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：-
- Height - Seated (Max)：-
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：01:02.3
- Impedance - Primary (Ohms)：15k
- Impedance - Secondary (Ohms)：80k
- DC Resistance (DCR) - Primary：1.392kOhm
- DC Resistance (DCR) - Secondary：8.109kOhm
- Transformer Type：Impedance Matching
- Frequency Range：30Hz ~ 15kHz
- Frequency Response：±3dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：1mW
- Operating Temperature：-
- Approval Agency：-
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Overview
The Triad Magnetics A-41J is a chassis-mount audio transformer designed for impedance matching applications. It features a primary impedance of 15 kOhms and a secondary impedance of 80 kOhms center-tapped, providing a turns ratio of 1:2.3. The device supports a maximum DC current of 8 mA on the primary side and handles up to 32 mW of power. Its frequency response spans from 30 Hz to 15 kHz, ensuring effective signal transmission within this range.
Feature Summary
- Provides precise impedance matching between tube outputs and grid inputs
- Features a center-tapped secondary winding configuration
- Utilizes wire lead termination for flexible integration
- Constructed with PVC housing for standard mounting
Applications
- Tube amplifier output stages
- Audio signal coupling between vacuum tubes
- Impedance bridging in high-fidelity audio circuits
- Grid drive applications for subsequent tube stages
Procurement Notes
Verify that the specific order matches the Triad Magnetics manufacturer designation A-41J. Confirm the impedance values align with system requirements, specifically the 15 kOhm primary and 80 kOhm center-tapped secondary. Ensure the chassis mount style and wire lead termination are compatible with the intended enclosure design before finalizing procurement.
Selection Notes
Select this component when interfacing vacuum tube circuits requiring a 1:2.3 impedance transformation ratio. The 15 kOhm primary impedance suits specific tube plate loads, while the 80 kOhm CT secondary drives high-impedance grids. Consider the 30 Hz to 15 kHz bandwidth for audio fidelity needs and ensure the 8 mA DC current rating accommodates the bias conditions of the connected circuitry.
Part Context
This audio transformer belongs to the category of impedance match transformers used primarily in vintage and modern tube-based audio equipment. It serves as a critical interface component, allowing efficient power transfer and signal integrity between stages with differing electrical characteristics. The chassis mount form factor distinguishes it from PCB-mounted alternatives.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Users must verify compatibility based on impedance ratios, frequency response, and physical mounting constraints when seeking alternative components.
