291ZZ

Description：PWR XFMR CHAS MT
Series：291
Mfr：Hammond Manufacturing
Package：Bulk

SKU:6b62c36c0ec2 Category: Power Transformers Brand: Hammond Manufacturing

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Product introduction

291ZZ is listed in the Power Transformers range at ChipApex. The manufacturer field lists Hammond Manufacturing. Its product description is PWR XFMR CHAS MT. Review the specifications below when checking this part for your BOM.

Power Transformers specifications for 291ZZ

Description：PWR XFMR CHAS MT
Series：291
Mfr：Hammond Manufacturing
Package：Bulk
Type：-
Voltage - Primary：120V
Voltage - Secondary (Full Load)：364V, 53V, 6.3V, 6.3V
Current - Output (Max)：1A, 1A, 7A
Primary Winding(s)：Single
Secondary Winding(s)：Triple
Center Tap：Yes
Power - Max：-
Mounting Type：Chassis Mount
Termination Style：Wire Leads
Size / Dimension：92.25mm L x 129.54mm W
Height - Seated (Max)：114.30mm
Voltage - Isolation：-
Weight：-

Power Transformers datasheet and documents for 291ZZ

291ZZ

Power Transformers Overview

The Hammond Manufacturing 291ZZ is a power transformer designed for tube guitar amplifiers, specifically serving as a replacement for Fender models. It features a single primary winding rated at 120 VAC and operates at a frequency of 60 Hz. The secondary configuration provides multiple voltage outputs: 364 VAC, 53 VAC, and 6.3 VAC. With a total power rating of 462 VA, this component supports the high-energy requirements of vacuum tube circuits in audio equipment.

Power Transformers Feature Summary

Engineered specifically for tube guitar amplifier applications
Provides multiple secondary voltage taps for complex tube circuits
Designed as a direct replacement for original Fender amplifier transformers

Power Transformers Applications

Replacement power supply for vintage Fender tube guitar amplifiers
Custom tube audio amplifier builds requiring specific voltage profiles
Restoration projects for classic musical instrument electronics

Power Transformers Procurement Notes

Verify that the target amplifier circuit matches the 364V, 53V, and 6.3V secondary specifications before installation. Confirm that the physical chassis dimensions and mounting hole patterns are compatible with the existing enclosure. Ensure the 120V primary input aligns with the local mains voltage to prevent damage. Cross-reference the 462 VA rating against the total tube load to ensure adequate power delivery.

Power Transformers Selection Notes

Select this model only when the original transformer has failed and an exact electrical match is required for historical accuracy or performance consistency. Consider the 291EX if the application requires different secondary voltages such as 660 VAC CT. Evaluate mechanical constraints carefully, as industrial transformers may have specific footprint requirements that differ from standard OEM sizes.

Power Transformers Part Context

This component belongs to the Hammond 291 series of industrial power transformers. These units are widely recognized in the audio industry for their reliability and robust construction. The series typically includes various variants tailored for different tube rectifier and biasing requirements, making it a staple for both repair and custom audio engineering.