1. Introduction
The Pyramid PS26KX Bench Power Supply is a linear and regulated AC-to-DC power converter designed to provide a constant source of DC voltage for various electronic devices and components. It is ideal for hobbyists, home labs, and equipment testing stations, offering reliable and adjustable power output.
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your Pyramid PS26KX power supply. Please read it thoroughly before use.
Figure 1: Front view of the Pyramid PS26KX Bench Power Supply, showing the meters, controls, and output terminals.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the unit and connected equipment:
- Power Source: Connect the unit only to a 115V AC, 60Hz power outlet. Ensure the power outlet is properly grounded.
- Ventilation: Ensure adequate ventilation around the unit. Do not block the cooling fan or air vents. Maintain at least 6 inches of clear space around all sides of the power supply.
- Overload Protection: The unit is equipped with electronic overload and short circuit protection. In case of an overload or short circuit, the protection circuit will activate. Disconnect the load and resolve the issue before resuming operation.
- Fuse Protection: The power supply is fuse protected with an auto-reset feature. If the unit shuts down unexpectedly, check for short circuits or overloads in the connected equipment.
- Moisture: Do not expose the unit to rain, moisture, or excessive humidity. Do not operate with wet hands.
- Placement: Place the unit on a stable, flat, and heat-resistant surface. It is designed for tabletop placement.
- Internal Components: Do not attempt to open the casing or service the unit yourself. Refer all servicing to qualified personnel. There are no user-serviceable parts inside.
3. Product Features
The Pyramid PS26KX Bench Power Supply offers a range of features for versatile and reliable power conversion:
- Linear / Regulated Power Supply Design
- AC-to-DC Power Conversion (12V DC nominal)
- Provides Constant Source of DC Voltage
- Simple Electronic Plug-in Operation
- Hassle-Free Screw Terminal Connectors for secure connections
- Eliminates the Need for Battery or External Power Source
- Analogue Gauge Amperage & Voltage Metered Display for real-time monitoring
- Rotary Control for Adjustable Voltage Level (6-15V DC)
- Fuse Protected with Auto-Reset for enhanced safety
- Electronic Overload & Short Circuit Protection
- Suitable for Component & Device Equipment Testing, Operation & Performance
- Rugged & Durable Housing Construction with Cabinet Heatsink
- LED Indicator Light for power status
- Built-in Cooling Fan to prevent overheating
- Power ON / OFF Switch for easy control
- Compact design, safe for tabletop placement
Figure 2: Diagram highlighting key features and components of the PS26KX, including the amperage gauge, voltage gauge, power switch, voltage adjust knob, and output terminals.
4. Setup
Follow these steps to set up your Pyramid PS26KX power supply:
- Unpacking: Carefully remove the power supply from its packaging. Inspect the unit for any signs of damage during transit.
- Placement: Place the power supply on a stable, level, and well-ventilated surface. Ensure that the air vents on the unit are not obstructed. The unit is designed for tabletop use.
- Power Connection: Connect the AC power cord to a standard 115V AC, 60Hz wall outlet. Ensure the power switch on the front panel is in the 'OFF' position before plugging in.
- Device Connection: Connect your device or equipment to the output terminals on the front panel. The red terminal is for positive (+) and the black terminal is for negative (-). Use appropriate gauge wires for your application and ensure secure connections using the screw-type terminals.
5. Operating Instructions
Operating the Pyramid PS26KX is straightforward:
- Initial Voltage Setting: Before turning on the unit, it is recommended to set the 'VOLTAGE ADJUST' knob to its minimum position (fully counter-clockwise) to prevent sudden voltage surges to your connected device.
- Power On: Flip the 'POWER ON/OFF' switch to the 'ON' position. The LED indicator light will illuminate, and the built-in cooling fan may start operating.
- Adjusting Voltage: Slowly turn the 'VOLTAGE ADJUST' knob clockwise to increase the output voltage to the desired level. Monitor the 'VOLTS' gauge on the front panel to ensure the correct voltage is set (adjustable from 6V DC to 15V DC).
- Monitoring Amperage: The 'AMPS' gauge will display the current draw of your connected device. This allows you to monitor the load and ensure it stays within the unit's constant amperage rating of 22.0 AMP (25.0 AMP surge).
- Power Off: When finished, first turn the 'VOLTAGE ADJUST' knob back to its minimum position, then flip the 'POWER ON/OFF' switch to the 'OFF' position. Disconnect your device from the output terminals.
Figure 3: Close-up view of the PS26KX front panel, showing the Amps and Volts meters, Voltage Adjust knob, and Power On/Off switch for operational control.
The PS26KX is compatible with a wide range of devices, including cellular phones, CB radios, scanners, and HAM radios, making it a versatile power source for various applications.
Figure 4: The Pyramid PS26KX power supply connected to and powering various electronic devices, demonstrating its broad compatibility.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your power supply:
- Cleaning: Disconnect the power supply from the AC outlet before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or abrasive chemicals.
- Ventilation: Regularly check that the cooling fan and air vents are free from dust and debris. Accumulated dust can impede airflow and lead to overheating. Use compressed air to gently clear vents if necessary.
- Connections: Periodically inspect the screw terminal connections to ensure they are tight and secure. Loose connections can cause poor performance or arcing.
- Storage: When not in use for extended periods, store the power supply in a cool, dry place, away from direct sunlight and extreme temperatures.
7. Troubleshooting
If you encounter issues with your Pyramid PS26KX, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power / Unit does not turn on | Power cord not securely plugged in; Wall outlet not active; Power switch is OFF; Internal fuse tripped (auto-reset) | Ensure power cord is fully inserted; Check wall outlet with another device; Turn power switch to ON; Disconnect all loads, turn unit off and on again to allow auto-reset. |
| No output voltage | Voltage Adjust knob set too low; Overload/Short circuit protection activated; Loose output connections | Slowly turn Voltage Adjust knob clockwise; Check connected device for short circuits or excessive current draw, then reset unit; Ensure output terminal connections are secure. |
| Unit shuts down during operation | Overload or short circuit; Insufficient ventilation leading to overheating | Reduce load or check for short circuits; Ensure vents are clear and unit has adequate airflow. Allow unit to cool down before restarting. |
| Cooling fan is noisy | Normal operation; Dust accumulation | The fan operates to maintain optimal temperature. If excessive, clean vents as per Maintenance section. |
If the problem persists after attempting these solutions, contact customer support or a qualified technician.
8. Specifications
| Model Number | PS26KX |
| Amperage (Constant) | 22.0 AMP |
| Amperage (Surge) | 25.0 AMP |
| Connectors/Terminals | Red Positive (+), Black Negative (-) Screw-type |
| Power Output | 6-15V DC, Adjustable |
| Power Input | 115V AC, 60Hz (500 Watt) |
| Dimensions (L x W x H) | 11.8'' x 9.1'' x 7.1'' inches |
| Item Weight | 16 pounds |
| Cooling Method | Air (Built-in Cooling Fan) |
| Manufacturer | Sound Around |
9. Warranty
The Pyramid PS26KX Bench Power Supply comes with a 1-Year Limited Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from misuse, abuse, accident, unauthorized modification, or improper installation.
Please retain your proof of purchase for warranty claims. For detailed warranty terms and conditions, refer to the official Pyramid product documentation or contact customer support.
10. Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please visit the official Pyramid website or contact their customer support department. Contact information can typically be found on the manufacturer's website or on the product packaging.
When contacting support, please have your product model number (PS26KX) and purchase information readily available.
