290CG

Power Transformers Overview

The Hammond Manufacturing 290CG is a chassis-mount power transformer designed for tube application equipment. It features a single primary winding rated for 120VAC and 240VAC operation, providing versatile input compatibility. The unit utilizes a triple secondary winding configuration delivering 338VAC center-tapped, 6.3VAC, and 43VAC outputs. Current ratings are specified at 450mA for the high-voltage secondary, 7A for the low-voltage filament supply, and 150mA for the auxiliary secondary. This component is engineered for robust industrial control and audio amplifier applications requiring stable voltage transformation.

Power Transformers Feature Summary

• Triple secondary winding architecture supporting multiple voltage requirements simultaneously
• Chassis mounting style with wire lead termination for secure installation
• Single primary winding design accommodating dual voltage inputs

Power Transformers Applications

• Tube guitar amplifier power supplies
• Industrial control circuitry
• Audio equipment power distribution

Power Transformers Procurement Notes

Verify the specific voltage and current requirements against the target equipment schematic before procurement. Confirm that the chassis mounting dimensions and wire lead lengths are compatible with the existing enclosure layout. Ensure the operating frequency matches the system design to prevent performance degradation or overheating issues during continuous operation.

Power Transformers Selection Notes

Select this model when a compact chassis-mount solution is required for tube-based circuits needing distinct high-voltage and filament voltages. Compare the 290CG specifications against similar series components like the 290PX to ensure the current ratings meet the load demands. Consider the physical footprint and weight constraints of the assembly to guarantee proper mechanical support and thermal management within the final product design.

Power Transformers Part Context

The 290CG belongs to the Hammond 290 series of power transformers, which are widely utilized in vintage and modern tube amplifier designs. This series emphasizes reliability and standardized form factors for easy integration into classic audio equipment rebuilds. The component serves as a critical interface between mains power and the vacuum tube circuitry, ensuring appropriate voltage levels for plate, screen, and filament operations.

Power Transformers Replacement Considerations

The 290DEX is a documented alternative within the same series offering different secondary specifications. Verify electrical compatibility before substitution.