144P

Overview

The Hammond Manufacturing 144P is an audio output transformer designed for low-power applications. It features a primary impedance of 1000 Ohms and a secondary impedance of 3.2 Ohms. The device supports a frequency response range from 150 Hz to 15 kHz with a power rating of 50 mW. This component facilitates signal coupling in audio circuits, providing impedance matching between source and load.

Feature Summary

• Provides electrical isolation between circuit stages
• Matches high-impedance sources to low-impedance loads
• Supports standard audio frequency band transmission

Applications

• Low-power audio amplifier output stages
• Impedance matching in vintage audio equipment restoration
• Signal coupling in tube-based audio circuits

Procurement Notes

Verify the specific winding configuration and physical dimensions against the original design requirements before procurement. Confirm that the 50 mW power rating meets the system's operational demands. Ensure compatibility with the intended PCB footprint or wiring method. Cross-reference the manufacturer datasheet for precise terminal identification and thermal limits to prevent installation errors.

Selection Notes

Select this model when a 1000:3.2 Ohm transformation ratio is required for 50 mW audio signals. Consider the operating frequency range of 150 Hz to 15 kHz to ensure it covers the necessary bandwidth for the application. Evaluate the physical size constraints and mounting style relative to the enclosure space available in the final assembly.

Part Context

This component belongs to Hammond Manufacturing's line of audio transformers. These devices are typically used in consumer electronics and professional audio gear where galvanic isolation and impedance transformation are critical for signal integrity and noise reduction.