841A

Overview

The Hammond Manufacturing 841A is a broadcast audio transformer designed for plate-to-line applications. It features primary impedances of 5 kOhms and 20 kOhms, with secondary impedances of 50 Ohms and 200 Ohms. The unit operates within a frequency range of 50 Hz to 15 kHz. Physical dimensions include a length of 44.5 mm, width of 31.8 mm, and height of 65 mm. It utilizes wire lead termination and includes shielding.

Feature Summary

• Designed for plate-to-line audio signal transformation in broadcast environments
• Provides electrical isolation between circuit stages
• Constructed with internal shielding to minimize interference

Applications

• Broadcast audio systems
• Plate-to-line signal interfacing
• Audio equipment interstage coupling

Procurement Notes

Verify the specific impedance configuration required for your application, as the component supports multiple primary and secondary options. Confirm that wire lead termination suits your assembly process. Ensure compatibility with existing broadcast infrastructure standards before finalizing the order.

Selection Notes

Select this model when plate-to-line conversion is necessary for broadcast audio signals. Consider the available impedance combinations to match source and load requirements. Evaluate the physical dimensions to ensure fit within the designated enclosure space.

Part Context

This component belongs to the 800 series of audio transformers from Hammond Manufacturing. It serves as a specialized solution for professional audio applications requiring signal isolation and impedance matching between vacuum tube plates and transmission lines.

Replacement Considerations

The 842A is a documented substitute offering similar plate-to-line functionality with different impedance specifications.