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Product Detailed Parameters
- Description：AUDIO TRANSFORMER, BROADCAST, P
- Series：800A
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：-
- Height - Seated (Max)：-
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：20k, 5k
- Impedance - Secondary (Ohms)：125, 500
- DC Resistance (DCR) - Primary：-
- DC Resistance (DCR) - Secondary：-
- Transformer Type：General Purpose
- Frequency Range：-
- Frequency Response：-
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：-
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 842A is an isolated audio transformer designed for broadcast applications, specifically facilitating push-pull plate-to-line connections. It operates within a frequency range of 50 Hz to 15 kHz and features a single channel configuration. The primary coil impedance is 20 kOhms, while the secondary coil impedance is 500 Ohms. The unit utilizes wire lead termination and includes shielding. Physical dimensions are 44.5 mm in length, 31.8 mm in width, and 65 mm in height, with a weight of approximately 249.5 grams.
Feature Summary
- Deep-drawn steel case construction with a tin-plated finish for durability
- Integrated wire leads with a minimum length of four inches
- Two convenient 6-32 mounting studs included with hardware
- Shielded design to minimize electromagnetic interference
Applications
- Broadcast audio systems
- Push-pull tube output circuits
- Plate-to-line signal transformation
Procurement Notes
Verify current availability status as this component may be discontinued as a stocked part. Confirm compatibility with existing circuit requirements before ordering. Check for updated replacement options within the 800A series if direct procurement is unavailable. Ensure technical specifications match system needs prior to purchase.
Selection Notes
Select this model for applications requiring specific push-pull plate-to-line impedance matching. The 20 kOhm primary and 500 Ohm secondary values define its electrical interface. Consider physical mounting constraints due to the included 6-32 studs. Verify frequency response requirements against the 50 Hz to 15 kHz operational range.
Part Context
This component belongs to the Hammond 800A series of audio transformers. It serves as a specialized solution for broadcast-grade audio signal isolation and transformation. The design focuses on reliable performance in professional audio environments requiring precise impedance conversion between tube stages and line outputs.
Replacement Considerations
Consult the 800A series for potential replacements if this specific part number is no longer stocked. Verify that substitute models maintain identical impedance ratios and physical mounting configurations.
