290DEX

Power Transformers Overview

The Hammond Manufacturing 290DEX is an industrial power transformer designed for tube guitar amplifier applications, specifically as a replacement for Fender models. It features a single primary winding rated at 240VAC operating at 50/60 Hz. The secondary configuration provides a 650VAC center-tapped output with a current rating of 230mA. Constructed for chassis mounting, the unit utilizes wire leads for termination. Its physical dimensions are 103.2 mm in length, 87.32 mm in width, and 104.77 mm in height.

Power Transformers Feature Summary

• Designed specifically for tube application power transformers
• Single primary winding construction
• Triple secondary winding configuration
• Chassis mounting style with wire lead terminations

Power Transformers Applications

• Replacement power supply for Fender guitar amplifiers
• Tube-based audio equipment restoration
• Industrial control transformer circuits requiring specific voltage ratings

Power Transformers Procurement Notes

Verify that the target amplifier operates on a 240VAC input when using this specific model variant. Confirm that the chassis mounting holes align with the existing enclosure layout. Ensure the wire lead lengths are sufficient for the intended circuit board or terminal strip connections before installation.

Power Transformers Selection Notes

Select the 290DEX when the system requires a 240V primary input rather than the standard 120V variants found in other 290 series models. This part is suitable for regions with 240V mains or specific international amplifier designs. Compare the 230mA secondary current rating against the original equipment specifications to ensure adequate power delivery for the vacuum tubes.

Power Transformers Part Context

This component belongs to the Hammond 290 series, which specializes in power transformers for vintage-style tube guitar amplifiers. The series includes various models tailored to different amplifier brands and voltage requirements. The 290DEX serves as a direct functional equivalent for specific Fender units requiring higher primary voltage inputs.

Power Transformers Replacement Considerations

The 290EX is a related model within the same series but differs in primary voltage and secondary current specifications. Verify compatibility with the specific amplifier model before substitution.