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290DX is listed in the Power Transformers range at ChipApex. The manufacturer field lists Hammond Manufacturing. Its product description is PWR XFMR LAMINATED CHAS MT. Review the specifications below when checking this part for your BOM.
Power Transformers specifications for 290DX
- Description：PWR XFMR LAMINATED CHAS MT
- Series：290
- Mfr：Hammond Manufacturing
- Package：Box
- Type：Laminated Core
- Voltage - Primary：120V
- Voltage - Secondary (Full Load)：650V, 6.3V, 5V
- Current - Output (Max)：230mA, 4A, 3A
- Primary Winding(s)：Single
- Secondary Winding(s)：Triple
- Center Tap：Yes
- Power - Max：-
- Mounting Type：Chassis Mount
- Termination Style：Wire Leads
- Size / Dimension：87.33mm L x 103.20mm W
- Height - Seated (Max)：106.38mm
- Voltage - Isolation：-
- Weight：8 lbs (3.6 kg)
Power Transformers datasheet and documents for 290DX
Power Transformers Overview
The Hammond Manufacturing 290DX is a laminated core power transformer designed for chassis mounting in tube audio applications. It features a single primary winding rated for 120VAC input and triple secondary windings providing 650VCT at 230mA, 6.3V at 4A, and 5V at 3A. The unit utilizes wire leads for termination and measures 103.2 mm in length, 87.32 mm in width, and 104.77 mm in height.
Power Transformers Feature Summary
- Designed specifically as a replacement power transformer for Fender guitar amplifiers within the 290 series lineup.
- Constructed with a laminated core and configured for direct chassis mounting to ensure structural stability.
- Equipped with wire leads for straightforward electrical connection to amplifier circuitry.
Power Transformers Applications
- Replacement power supply for Fender guitar amplifiers
- Tube-based audio equipment restoration
- Custom tube amplifier builds requiring specific voltage taps
Power Transformers Procurement Notes
Verify that the target amplifier model matches the original specifications supported by the 290DX series. Confirm physical clearance dimensions against the existing chassis layout. Ensure the primary voltage rating aligns with the local mains supply frequency and voltage standards before installation.
Power Transformers Selection Notes
Select this component when replacing a failed transformer in compatible Fender amplifiers. Compare the required secondary voltages and current ratings against the original unit's specifications. Consider the chassis mounting style and wire lead configuration during integration planning.
Power Transformers Part Context
This component belongs to the Hammond 290 series, which specializes in power transformers for tube audio applications. The series includes variants tailored for different amplifier models, ensuring compatibility with legacy and reissue guitar amplifiers through standardized form factors and electrical characteristics.
Power Transformers Replacement Considerations
The 290DX serves as a direct replacement for specific Fender amplifier models. Verify compatibility with the exact amplifier variant before procurement.
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