290EEX

Power Transformers Overview

The Hammond Manufacturing 290EEX is a laminated core power transformer designed for chassis mounting in tube guitar amplifiers. It features a single primary winding rated at 240 VAC and operates at 60 Hz. The secondary configuration includes a center-tapped high-voltage output of 660 VAC at 276 mA, along with dual low-voltage heater windings providing 6.5 VAC at 3.15 A. The unit utilizes wire lead termination and measures 103.2 mm in length, 87.32 mm in width, and 104.77 mm in height.

Power Transformers Feature Summary

• Designed as a direct replacement for Fender guitar amplifiers within the 290 series
• Features a laminated core construction for standard industrial control applications
• Supports chassis mounting via wire lead terminations

Power Transformers Applications

• Replacement power supply for Fender tube guitar amplifiers
• Industrial control transformer circuits requiring 240V input
• Tube amplifier restoration projects

Power Transformers Procurement Notes

Verify that the incoming voltage matches the 240 VAC primary rating before installation. Confirm that the load current requirements do not exceed the specified 276 mA on the high-voltage secondary or 3.15 A on the heater windings. Ensure physical dimensions fit the target chassis enclosure. Check for compliance with local electrical safety standards regarding isolation and insulation.

Power Transformers Selection Notes

Select this model specifically when a 240 VAC primary source is available and the application requires a 660 VCT secondary. Compare against the 290TX if a 115 VAC primary is needed instead. Consider the 290DEX if a 230 VAC input is preferred with slightly different secondary characteristics. Verify that the triple secondary winding configuration aligns with the circuit design requirements.

Power Transformers Part Context

This component belongs to the Hammond 290 series, a line of power transformers widely used in audio equipment. It shares dimensional similarities with other models in the family but differs in electrical ratings. The 290EEX is distinct from the 290XXA, which is an unshielded pin-terminal variant, and the 290PX, which offers dual primary options.

Power Transformers Replacement Considerations

• 290EX

Power Transformers FAQ

What is the primary voltage rating?

The primary winding is rated for 240 VAC.

Does this transformer have shielding?

The documentation does not specify magnetic shielding; it is categorized under industrial control transformers.