1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the GODIYMODULES Tube Preamp Switch Power Supply. This power supply is designed for use with tube preamplifiers and valve amplifiers, offering stable and clean power output.
Key features include an all-aluminum alloy shell with a stainless steel shield for electromagnetic interference reduction, a 5V Bluetooth decoder board power interface, and high-voltage delay synchronous rectification to minimize current impact on tubes.
2. Safety Precautions
Always observe the following safety precautions to prevent injury or damage to the device:
- Ensure the power supply is disconnected from the main power source before making any connections or adjustments.
- Do not expose the unit to moisture or extreme temperatures.
- Only use the specified input voltage range (95V-265V).
- Handle with care, especially when working with high voltage components.
- Installation should be performed by individuals familiar with electronic circuits and safety practices.
3. Product Overview
The GODIYMODULES Tube Preamp Switch Power Supply is a compact and robust power solution for audio applications. It features a shielded design and multiple output voltages.
3.1. Components and Features
- All-aluminum alloy shell and stainless steel shield: Provides excellent electromagnetic interference (EMI) shielding.
- 5V Bluetooth decoder board power interface: Convenient for integrating additional audio components.
- High-voltage delay synchronous rectification: Reduces current impact during startup, protecting vacuum tubes. The delay is approximately 30 seconds and can be adjusted.
- Selectable High Voltage Output: User can select between 250V or 280V output.
- Filament Output: Provides 6.3V for tube filaments.
3.2. Package Contents
The package includes:
- 1 x Tube Preamp Switch Power Supply Module
4. Specifications
| Feature | Detail |
|---|---|
| Input Voltage | 95V-265V AC |
| High Voltage Output | 250V or 280V DC (selectable) |
| Filament Voltage Output | 6.3V AC |
| Auxiliary Output | 5V DC (for Bluetooth decoder board) |
| Delay Function | Approx. 30 seconds (adjustable) |
| Shielding | All-aluminum alloy shell, stainless steel shield |
| Dimensions | 3.94 x 2.28 x 1.26 inches (10 x 5.8 x 3.2 cm) |
| Weight | 7.05 ounces (0.2 kg) |
5. Setup and Installation
Follow these steps for proper installation of the power supply module into your audio system. It is recommended to have experience with electronics for this process.
5.1. Identifying Connections
Figure 5.1: Connection Diagram of the Power Supply Module.
This image illustrates the various connection points on the power supply module. Key labels include "Power input 110-220V" for AC input, "Lamp is filament 6.3V" for the filament supply, and "Output 250V or 280V" for the high voltage DC output. Ground (GND) connections are also clearly marked.
- Power Input (110-220V): Connect your AC mains power here. This module supports a wide input range from 95V to 265V.
- Filament Output (6.3V): Connect this to the filament pins of your vacuum tubes.
- High Voltage Output (250V/280V): Connect this to the anode (plate) supply of your vacuum tubes.
- GND: Common ground connections for all outputs.
- 5V Output: A dedicated 5V output is available for powering a Bluetooth decoder board or similar low-power accessories.
5.2. High Voltage Output Selection
The module allows selection between 250V and 280V for the high voltage output. This is typically done via a jumper or switch on the board. Refer to the diagram (Figure 5.1) for the exact location of the selection jumper.
- To select 250V output, position the jumper accordingly.
- To select 280V output, position the jumper accordingly.
Important: Ensure the power supply is completely disconnected from the mains before changing the high voltage output selection.
5.3. Mounting
The module features mounting holes for secure installation within an enclosure. Use appropriate screws and standoffs to prevent short circuits and ensure proper ventilation.
Figure 5.2: Angled view of the power supply module.
This image provides an angled perspective of the power supply module, highlighting its robust all-aluminum alloy shell and stainless steel shield. The mounting tabs with pre-drilled holes are visible, indicating how the unit can be securely fastened within an amplifier chassis or enclosure.
Figure 5.3: Front view of the power supply module.
This image shows a direct front view of the power supply module, emphasizing the perforated metal shield that covers the internal components. The green terminal blocks for connections are visible on the sides.
Figure 5.4: Alternative angled view of the power supply module.
This image offers another angled view of the power supply module, similar to Figure 5.2, further illustrating the compact design and the protective metal casing.
Figure 5.5: Internal components of the power supply module.
This image provides a top-down view of the power supply module with its shield removed, revealing the internal circuit board, transformer, capacitors, and other electronic components. This view is useful for understanding the layout and identifying specific parts.
Figure 5.6: Bottom view of the power supply module.
This image displays the bottom side of the power supply module, showing the solid metal base and additional mounting points. This view confirms the robust construction and provides insight into how the unit can be mounted from below.
6. Operating Instructions
Once the power supply is correctly installed and connected to your tube amplifier circuit, operation is straightforward.
- Verify Connections: Double-check all wiring connections to ensure they are secure and correct according to the setup instructions.
- Apply Power: Connect the AC input to a suitable power outlet (95V-265V).
- Observe Delay: The high voltage output will engage after a delay of approximately 30 seconds. This delay allows the tube filaments to warm up, protecting the tubes from sudden high voltage stress.
- Monitor Performance: After the delay, the amplifier should power on and operate normally. Listen for any unusual noises or signs of malfunction.
The power supply is designed for continuous operation within its specified parameters.
7. Maintenance
The GODIYMODULES Tube Preamp Switch Power Supply is designed for long-term reliability with minimal maintenance. However, periodic checks can help ensure optimal performance and longevity.
- Cleaning: Ensure the module is kept clean and free of dust. Disconnect power before cleaning. Use a soft, dry cloth. Do not use liquid cleaners.
- Ventilation: Ensure adequate airflow around the module, especially if it is enclosed. Overheating can reduce component lifespan.
- Connection Checks: Periodically inspect all wiring connections for tightness and signs of corrosion. Loose connections can lead to intermittent operation or damage.
- Visual Inspection: Look for any signs of physical damage, bulging capacitors, or discoloration on the circuit board, which may indicate a problem.
Note: Do not attempt to repair the module yourself if you are not qualified. Contact professional service if issues arise.
8. Troubleshooting
This section provides solutions to common issues you might encounter with the power supply module.
| Problem | Possible Cause | Solution |
|---|---|---|
| No power output | No input power; Incorrect wiring; Blown fuse (internal) | Check AC input connection. Verify all wiring. If suspected internal fuse, seek professional repair. |
| High voltage output not present after delay | Faulty delay circuit; Overload protection activated | Ensure no short circuits in the connected load. Disconnect load and test power supply independently. |
| Humming or noise in audio | Ground loop; Insufficient shielding; Faulty components | Ensure proper grounding. Verify shield cover is correctly installed. Check for loose connections. |
| Incorrect output voltage | Incorrect high voltage jumper setting; Overload; Component failure | Verify high voltage jumper setting. Reduce load. If problem persists, professional service is required. |
If you encounter issues not listed here or if the suggested solutions do not resolve the problem, please contact customer support.
9. Warranty and Support
For warranty information and technical support, please refer to the seller's policy on the platform where the product was purchased. Keep your purchase receipt as proof of purchase.
Manufacturer: GODIYMODULES
ASIN: B0D9VCYBLB