850GA

Overview

The Hammond Manufacturing 850GA is an audio transformer designed for broadcast, sealed line isolation, or hybrid applications. It features a primary impedance of 150 ohms and a secondary impedance of 600 ohms. The device supports dual secondary windings rated at 150/150 ohms each, enabling versatile circuit configurations. Constructed for general-purpose use, it is suitable for replacement in push-pull tube output circuits. The unit provides electrical isolation while maintaining signal integrity across audio frequencies.

Feature Summary

• Provides electrical isolation for broadcast and hybrid audio applications
• Supports push-pull tube output circuit configurations
• Features dual secondary windings for flexible impedance matching

Applications

• Broadcast audio systems
• Sealed line isolation circuits
• Hybrid audio network interfaces
• Push-pull tube amplifier output stages

Procurement Notes

Verify the specific datasheet version to confirm pinout compatibility with existing circuit designs. Ensure that the 150/600 ohm impedance ratio aligns with the source and load requirements of the target application. Confirm mechanical mounting specifications match the enclosure constraints before finalizing procurement orders.

Selection Notes

Select this component when designing or repairing audio equipment requiring balanced line isolation or specific impedance transformation between 150 and 600 ohms. It is appropriate for legacy tube-based systems or modern setups requiring galvanic separation. Evaluate thermal management needs if operating in enclosed spaces, as continuous power handling characteristics should be reviewed against system duty cycles.

Part Context

The 850GA belongs to the Hammond 850A series of audio transformers. This series is engineered for professional audio environments where signal fidelity and noise rejection are critical. The product serves as a specialized passive component within larger audio processing chains, distinct from power or RF transformers due to its optimized frequency response for audible ranges.

Replacement Considerations

Direct substitutes include other Hammond 850A series variants with identical impedance ratios. Verify winding configuration matches exactly to maintain circuit balance. Cross-reference with generic audio isolation transformers only if impedance and phase relationships are strictly validated.