Welcome to the Tenma 72-10480 manual, your comprehensive guide to understanding and operating this digital-control DC power supply. This manual provides detailed information on key features, safety precautions, installation, and operation to ensure safe and effective use of the device.
1.1 Overview of the 72-10480 DC Power Supply
The Tenma 72-10480 is an affordable, single-output DC power supply offering adjustable voltage (0-30V) and current (0-3A). Designed for versatility and reliability, it features digital control, encoder adjustment, and memory storage for parameter settings. Ideal for various applications, this unit provides consistent performance with low noise and ripple, making it a reliable choice for laboratory and industrial use.
1.2 Purpose and Scope of the Manual
This manual is designed to provide users with a comprehensive understanding of the 72-10480 DC power supply, covering its features, operation, and maintenance. It serves as a detailed guide for both novice and experienced users, ensuring safe and efficient use. The manual includes setup instructions, safety precautions, and troubleshooting tips to help users maximize the device’s performance and longevity.

Key Features of the 72-10480
The 72-10480 offers adjustable voltage (0-30V) and current (0-3A), digital control with encoder adjustment, constant voltage/current modes, overcurrent/overvoltage protection, memory storage, and power-off memory functionality.
2.1 Adjustable Voltage and Current Output
The 72-10480 features an adjustable voltage range of 0-30V and current range of 0-3A, allowing precise control for various applications. The encoder enables fine and coarse adjustments, ensuring accurate settings. This flexibility makes it suitable for laboratory, industrial, and hobbyist use, providing reliable power supply with minimal noise and ripple.
2.2 Digital Control and Encoder Adjustment
The 72-10480 features digital control with an encoder for precise adjustments. The encoder allows both fine and coarse tuning of voltage and current settings. With a resolution of 10mV and 1mA, it ensures accurate control. The power-off memory function retains settings, while the keyboard lock prevents accidental changes, enhancing operational convenience and consistency.
2.3 Constant Voltage and Current Modes
The 72-10480 operates in Constant Voltage (CV) and Constant Current (CC) modes, ensuring precise control over output settings. CV mode maintains a stable voltage, while CC mode limits current to a set level. This dual-mode operation is ideal for various applications, providing flexibility and protection for connected loads. The device automatically switches between modes based on load conditions, ensuring safe and reliable operation.
2.4 Overcurrent and Overvoltage Protection
The 72-10480 features built-in overcurrent (OCP) and overvoltage (OVP) protection, ensuring enhanced safety during operation. These protections detect abnormal conditions and automatically disconnect the output to prevent damage to the device or connected equipment. This safeguard mechanism is essential for maintaining reliability and user safety, especially in demanding applications where voltage and current fluctuations are common.
2.5 Memory Storage for Parameter Settings
The 72-10480 offers a memory storage feature, allowing users to save up to five sets of voltage and current parameters. This function enhances efficiency by enabling quick recall of frequently used settings, eliminating the need for repeated adjustments. The stored parameters are retained even when the power supply is turned off, ensuring convenience and consistency in operation.

Technical Specifications
The 72-10480 features a voltage range of 0-30V and current range of 0-3A, with a resolution of 10mV and 1mA. It offers low noise and ripple, ensuring stable output. The unit operates on 120V AC input and provides convenient front-panel output connectors for easy connectivity and precise control.
3.1 Voltage and Current Range
The 72-10480 offers an adjustable voltage range of 0-30V and a current range of 0-3A, providing flexibility for various applications. The device features coarse and fine adjustment controls, allowing precise voltage and current settings to meet specific requirements. This range ensures compatibility with a wide array of electronic devices and experimental setups, making it a versatile tool for both professionals and hobbyists.
3.2 Resolution and Accuracy
The 72-10480 features a resolution of 10mV for voltage and 1mA for current, ensuring precise control over output settings. Its digital control system provides accurate adjustments, maintaining stability during operation. This level of resolution and accuracy makes the device suitable for applications requiring tight tolerances, ensuring reliable performance in both laboratory and industrial environments.
3.3 Noise and Ripple Characteristics
The 72-10480 is designed to minimize noise and ripple, ensuring a stable DC output. Its low noise and ripple characteristics make it ideal for sensitive applications, providing clean power for reliable performance in laboratory and industrial settings, which is essential for precise operations and consistent results.
3.4 Input and Output Connectors
The 72-10480 features a user-friendly front panel with clearly labeled input and output connectors. It includes 4mm banana sockets for output and an RS-232 interface for remote control. The connectors are designed for secure and reliable connections, ensuring easy integration into various systems and applications while maintaining optimal performance and safety.
Safety Precautions
Adhering to safety guidelines is crucial when using the 72-10480. Handle the device with care, avoid electrical hazards, and ensure proper ventilation. Always consult the manual for detailed precautions to ensure safe operation.
4.1 General Safety Guidelines
Always follow safety guidelines to prevent hazards. Handle the device with care, avoiding electrical contact. Ensure proper ventilation and keep the unit away from flammable materials. Regularly inspect cables and connectors for damage; Never operate the power supply near water or in humid environments. Consult the manual for specific precautions to ensure safe and reliable operation of the 72-10480.
4.2 Electrical Safety Measures
Ensure electrical safety by disconnecting the power supply before making adjustments. Use properly rated cables and connectors to avoid electrical hazards. Keep the unit dry and avoid exposure to water. Never modify the device or bypass safety features. Always operate within the specified voltage and current limits to prevent damage or electrical shock. Built-in overcurrent and overvoltage protection enhances safety during operation.
4.3 Proper Handling and Storage
Handle the 72-10480 with care to avoid physical damage. Store it in a dry, cool environment away from direct sunlight. Use the original packaging for storage to prevent scratches. Keep the unit away from children and flammable materials. Clean the exterior with a dry cloth and avoid exposing it to extreme temperatures or humidity to maintain optimal performance and longevity.

Installation and Setup
Unpack and inspect the 72-10480 for damage. Connect the power supply to a suitable AC source and configure initial settings. Refer to specific sections for detailed setup instructions.
5.1 Unpacking and Inspection
Carefully unpack the 72-10480 DC power supply and inspect for any visible damage. Verify all accessories, such as connectors and manuals, are included. Ensure the unit is free from physical damage and all components are securely intact. Before proceeding, confirm the model number matches your purchase and refer to the manual for initial setup guidelines.
5.2 Connecting the Power Supply
Connect the 72-10480 DC power supply to a suitable AC power source using the provided cord. Ensure the voltage rating matches your region’s standards; Attach output connectors to your load, observing correct polarity to prevent damage. Use the front panel adapters for secure connections. Adjust voltage and current settings as needed, following safety guidelines to avoid overcurrent or overvoltage conditions.
5.3 Initial Configuration
Power on the 72-10480 and ensure the display shows zero output. Use the encoder for coarse and fine adjustments to set default voltage and current parameters. Enable memory functions to store frequently used settings. Review and configure safety features like overcurrent and overvoltage protection to ensure safe operation. Refer to the manual for detailed steps to customize your initial setup effectively.
Operating the 72-10480
This section covers the essential steps for operating the 72-10480, including turning it on/off, adjusting voltage/current, and utilizing memory functions for efficient and precise power supply management.
6.1 Turning On and Off
To power on the 72-10480, locate the main power switch, typically found on the rear panel. Ensure all connections are secure before switching on. The device will initialize, displaying settings on the front panel. To turn off, simply flip the switch to the “OFF” position. Always follow safety guidelines to avoid potential hazards during operation.
6.2 Adjusting Voltage and Current
Adjust the 72-10480 output by using the encoder for fine or coarse adjustments. Rotate the encoder to set the desired voltage (0-30V) or current (0-3A). The digital display will show the selected values. Use short turns for precise adjustments and longer turns for quicker changes. Ensure settings match your application requirements before enabling the output.
6.3 Using Memory Functions
The 72-10480 allows storing up to 5 sets of voltage and current parameters for quick recall. Press and hold the memory button to save settings. Use the encoder to select stored profiles and load them for repeated use. This feature enhances efficiency in applications requiring consistent power supply configurations. The memory function ensures quick access to frequently used settings.
6.4 Switching Between Modes
To switch between Constant Voltage (CV) and Constant Current (CC) modes, press the mode button. The display will indicate the active mode. In CV mode, the output voltage is regulated, while in CC mode, the current is maintained. Use the encoder to adjust settings in the selected mode. The device ensures smooth transitions between modes for precise control of your power supply needs.
Calibration and Maintenance
This section covers calibration procedures and regular maintenance tips to ensure optimal performance and longevity of the 72-10480 DC power supply. Follow the guidelines for proper upkeep and adjustments to maintain accuracy and reliability over time.
7.1 Calibration Procedures
Calibration ensures the 72-10480 operates accurately. Use digital control and encoder adjustments to fine-tune voltage and current outputs. Refer to the manual for step-by-step calibration instructions. Regular checks and adjustments maintain precision and reliability, ensuring consistent performance over time. Always follow safety guidelines during calibration to prevent errors or damage to the unit.
7.2 Regular Maintenance Tips
Regular maintenance

Troubleshooting Common Issues
Identify and resolve common issues with the 72-10480 using error codes, output malfunction solutions, and connectivity troubleshooting guides. Refer to the manual for detailed diagnostic steps.
8.1 Identifying Error Codes
The 72-10480 displays error codes like “E001” or “E002” to indicate issues such as overcurrent or overvoltage. Refer to the manual for a list of codes and their meanings to diagnose and resolve problems effectively. Understanding these codes helps in troubleshooting and ensuring optimal performance of the power supply unit.
8.2 Resolving Output Malfunctions
If the 72-10480 fails to output power, check connections and ensure the unit is properly configured. Reset the device by turning it off and on. Verify voltage and current settings match your load requirements. If issues persist, consult the error code list in the manual for specific troubleshooting solutions to restore functionality.
8.3 Addressing Connectivity Problems
For connectivity issues with the 72-10480, ensure all cables are securely connected to the correct ports. Verify the input power is stable and adapters are properly seated. Check for loose or damaged connections, and replace any faulty cables. If problems persist, consult the manual’s troubleshooting section for detailed guidance on resolving connectivity-related errors.

Storage and Transportation
Store the 72-10480 in a cool, dry place, away from direct sunlight and moisture. Use original packaging for transportation to prevent damage. Handle with care to avoid physical stress.
9.1 Proper Storage Conditions
Store the 72-10480 in a cool, dry environment, avoiding direct sunlight and moisture. Use the original packaging for transportation to prevent damage. Ensure the unit is handled carefully to avoid physical stress or impact, which could compromise its performance and safety features. Proper storage conditions help maintain the device’s reliability and longevity.
9.2 Safe Transportation Practices
When transporting the 72-10480, use the original packaging to protect against physical stress and impact. Ensure the unit is securely fastened to prevent movement during transit. Avoid exposing the device to extreme temperatures or moisture. Proper handling during transportation is essential to maintain the power supply’s performance and safety features, ensuring it arrives in optimal working condition.

Frequently Asked Questions
Common questions about the 72-10480 include inquiries about voltage range, adjustment procedures, and troubleshooting tips, all addressed to ensure optimal performance and user satisfaction.
10.1 Common User Queries
Common user queries about the 72-10480 include questions on voltage range, adjustment procedures, and troubleshooting. Users often ask about setting specific voltages, resolving output issues, and understanding error codes. These queries are addressed in detail within this manual to ensure optimal performance and user satisfaction.
10.2 Solutions to Typical Problems
Common issues with the 72-10480 include power supply malfunctions or unstable voltage output. Solutions involve checking connections, ensuring proper settings, and resetting the device if necessary. For error codes, refer to the troubleshooting section. Adjusting voltage and current settings carefully can resolve most operational issues, ensuring reliable performance and user satisfaction.
Downloading the Manual
The 72-10480 manual is available for free download from platforms like Manual-Hub.com and All-Guides.com. Simply search for the model number to access the PDF document instantly.
11.1 Official Sources for the Manual
The official 72-10480 manual can be downloaded from trusted platforms like Manual-Hub.com and All-Guides.com. These websites provide free access to the PDF document, allowing users to easily search by model number and download the manual without registration. Ensure authenticity by using these official sources for accurate and reliable information.
11.2 Alternative Platforms for Download
Besides official sources, the 72-10480 manual can also be found on community forums and third-party documentation sites. Platforms like MonkeyWizard.net and user-driven forums often host downloadable versions. Additionally, some manufacturers provide alternate download links through their support pages, ensuring accessibility for users who prefer diverse options for obtaining the manual.

Community and Support
The 72-10480 community offers extensive support through online forums and discussion groups. Users can share experiences, resolve issues, and access resources from both peers and manufacturer experts.
12.1 Online Forums and Discussions
Active online forums and discussion groups dedicated to the 72-10480 provide a platform for users to share experiences, troubleshoot issues, and exchange tips. These communities, hosted on platforms like Manual-Hub.com, foster collaboration among enthusiasts and professionals, offering valuable insights and solutions to common challenges.
12.2 Manufacturer Support Channels
Tenma provides dedicated support channels for the 72-10480, including direct email and phone assistance for technical inquiries. Official resources, such as downloadable manuals and FAQs, are available on their website. Additionally, Tenma engages with users through social media platforms like YouTube and forums, fostering a community-driven support experience.

Additional Resources
Explore supplementary guides, tutorials, and manufacturer documentation for enhanced understanding. The 72-10480 manual is also available on platforms like Manual-Hub.com for easy access and reference.
13.1 Related Documentation
The 72-10480 manual is complemented by supplementary guides and tutorials, offering in-depth insights into advanced features and troubleshooting. Additional resources include manufacturer-provided datasheets and user guides, ensuring comprehensive understanding and optimal use of the power supply. These materials are accessible on platforms like Manual-Hub.com, enhancing your operational expertise and problem-solving capabilities.
13.2 Supplementary Guides and Tutorials
Supplementary guides and tutorials for the 72-10480 are available online, offering step-by-step instructions and video demonstrations. These resources cover advanced features, troubleshooting, and optimal usage tips. Platforms like Manual-Hub.com and All-Guides.com provide access to these materials, ensuring users can master the device’s capabilities and resolve issues efficiently. These guides enhance operational expertise and problem-solving skills.