ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：AUDIO XFMR CHAS MNT
- Series：290
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：3.756" L x 5.580" W (95.40mm x 141.73mm)
- Height - Seated (Max)：4.663" (118.44mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：-
- Impedance - Secondary (Ohms)：-
- DC Resistance (DCR) - Primary：510mOhm
- DC Resistance (DCR) - Secondary：40mOhm, 3.76Ohm, 5.865Ohm
- Transformer Type：-
- Frequency Range：-
- Frequency Response：-
- Voltage - Isolation：120/240VAC
- Insertion Loss：-
- Return Loss：-
- Power Level：-
- Operating Temperature：-
- Approval Agency：-
Download product information
Overview
The Hammond Manufacturing 290RX is a power transformer designed for tube guitar amplifiers, specifically serving as a replacement for Fender and Tone Master models. It features a single primary winding rated at 120 VAC and operates at a frequency of 60 Hz. The unit provides triple secondary windings with a center-tapped output of 337 VAC CT, alongside auxiliary voltages of 56 VAC and 6.3 VAC. The maximum secondary current rating is 1.1 A. Designed for chassis mounting, the transformer utilizes wire leads for termination. Its physical dimensions are 141.73 mm in length, 95.4 mm in width, and 116.84 mm in height.
Feature Summary
- Engineered specifically for tube guitar amplifier applications, ensuring compatibility with classic audio equipment designs.
- Features a robust chassis mount construction with wire lead terminations for secure installation.
- Provides multiple secondary voltage outputs to support high-voltage plate supply and filament heating requirements.
Applications
- Replacement power transformer for Fender guitar amplifiers
- Power supply component for Tone Master amplifier series
- Tube-based audio equipment requiring specific impedance matching
Procurement Notes
Verify that the target amplifier model explicitly lists the 290RX or its direct equivalent as the original power transformer specification. Confirm that the chassis mounting holes align with the new unit's dimensions before purchase. Ensure the existing wiring harness supports the wire lead termination style provided by this component to avoid modification issues during installation.
Selection Notes
Select the 290RX only when replacing a failed unit in compatible Fender or Tone Master amplifiers. This component is not interchangeable with other 290 series transformers due to unique voltage and current ratings. Ensure the replacement matches the original single primary configuration and triple secondary output structure to maintain proper amplifier operation and safety standards.
Part Context
The 290RX belongs to the Hammond 290 Series, a line of power transformers widely used in vintage and reissue tube guitar amplifiers. This series is known for providing reliable power conversion for audio applications requiring specific voltage taps. The 290RX specifically addresses the needs of modern reproductions of classic Fender designs, maintaining historical accuracy in electrical performance while meeting current manufacturing standards.
Replacement Considerations
Direct substitute part numbers include the original OEM designations used by Fender for this amplifier chassis. Verify compatibility with Tone Master variants before installation.
FAQ
What is the center-tapped secondary voltage rating?
The center-tapped secondary voltage rating is 337 VAC.
Does this transformer have a single or dual primary winding?
It features a single primary winding rated for 120 VAC.
