1. Introduction
The TBK 218 is a newly upgraded intelligent control DC regulated power supply designed for all-round maintenance and electronic device testing. It features a 300W ring transformer, a 4.3-inch HD IPS LCD screen for real-time current and voltage curve display, and a high-performance 32-bit microcontroller. This manual provides detailed instructions for the safe and efficient operation of your TBK 218 power supply.

2. Safety Information
Please read and understand all safety instructions before operating the device. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Always connect the power supply to a grounded outlet.
- Do not operate the device in wet or damp conditions.
- Ensure proper ventilation to prevent overheating.
- Do not open the casing of the power supply; there are no user-serviceable parts inside.
- Use only the provided power cord and accessories.
- Disconnect power before making any connections or disconnections to the output terminals.
- Keep children and unauthorized personnel away from the device during operation.
3. Product Overview
3.1 Key Features
- 300W Toroidal Transformer: Adopts military-grade toroidal transformer for improved output efficiency and stable long-term full-load operation without heating.
- High Performance 32-bit Microcontroller: Ensures precise control and stable output.
- 4.3-inch HD IPS LCD Screen: Provides quick response and high refresh rate for displaying current and voltage curves with accurate data.
- Smooth Waveform Display: Visualizes current and voltage changes in the circuit.
- Extra Large Mechanical Meter Head: Features a high-sensitivity pointer for precise readings.
- Dual USB Charging Measurement: Supports fast charging and measurement via USB ports.
- Simple Oscilloscope Functionality: Basic oscilloscope capabilities for waveform analysis.
- Diode Voltage Measurement: Dedicated function for measuring diode voltage.
- Waveform Pause Playback: Allows pausing and reviewing displayed waveforms.
- Short Circuit Repair: Integrated features for assisting in short circuit detection and repair.
- One-Click Output: Simplifies output control.
- Host Computer Display: Capability to connect to a host computer for enhanced display and control.

3.2 Component Identification

- FAST CHARGE / Charging Port: USB ports for fast charging and measurement.
- V-OUT / Output Port: Main DC output terminals (red for positive, black for negative).
- OUTPUT Button: One-click button to enable/disable the main DC output.
- Host Computer Port: For connecting the device to a computer.
- Pointer Fine Adjustment: Knob for fine-tuning the pointer on the mechanical meter.
3.3 Package Contents
Verify that all items are included in your package:

- TBK-218 Host Unit x 1
- Alligator Clip Cable x 1
- Power Cord x 1
- Oscilloscope Cable x 1
4. Setup
- Unpacking: Carefully remove all components from the packaging.
- Placement: Place the TBK 218 on a stable, level surface with adequate ventilation. Ensure there are no obstructions to the rear fan.
- Power Connection: Connect the provided power cord to the power input socket on the rear of the unit and then to a grounded AC 110V/220V power outlet.
- Initial Power On: Press the power switch located on the rear of the unit to turn it on. The 4.3-inch HD IPS LCD screen should illuminate.
5. Operating Instructions
5.1 Basic Operation
- Power On/Off: Use the main power switch on the rear panel.
- Voltage/Current Adjustment: Use the control knobs on the front panel to set the desired output voltage (DC0~30V) and current (up to 10A). The LCD screen will display the settings and real-time output.
- One-Click Output: Press the "OUTPUT" button to enable or disable the main DC output. The button's indicator light will show the output status.
5.2 LCD Screen and Curve Display
The 4.3-inch HD IPS LCD screen provides a real-time graphical representation of current and voltage changes, helping you better understand the circuit's behavior.


5.3 Ammeter Range Switching
The mechanical meter head offers three current ranges for precise measurement:

- 0~1A: For measurements up to 1 Ampere.
- 0~10A: For measurements up to 10 Amperes.
- 0~100mA: For precise measurements up to 100 milliamperes.
Use the appropriate switch or button (refer to the front panel layout) to select the desired range.
5.4 USB Charging Ports
The front panel includes USB ports for fast charging and measuring connected devices. Connect your device to the appropriate USB port.
5.5 Host Computer Connection
Connect the TBK 218 to a host computer using the designated port for advanced display, control, and data logging capabilities. Refer to the software documentation (if provided separately) for detailed instructions on host computer integration.
6. Maintenance
- Cleaning: Disconnect the power supply from the mains before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use abrasive cleaners or solvents.
- Ventilation: Ensure the ventilation openings are free from dust and debris. Periodically clean the fan vents with compressed air if necessary.
- 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
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Power cord not connected, power switch off, no power from outlet, blown fuse. | Check power cord connection. Ensure power switch is ON. Test outlet with another device. Check fuse (located on rear panel, replace with 3A/220VAC if blown). |
| No output voltage/current. | "OUTPUT" button not engaged, output terminals incorrectly connected, short circuit in load. | Press the "OUTPUT" button. Verify correct polarity and secure connections. Disconnect load and test power supply. |
| Inaccurate readings on meter/screen. | Incorrect ammeter range selected, loose connections, device malfunction. | Ensure the correct ammeter range is selected. Check all connections for tightness. If problem persists, contact support. |
| Device overheats. | Poor ventilation, prolonged full-load operation in high ambient temperature. | Ensure adequate space around the unit for airflow. Clean fan vents. Reduce load or operate in a cooler environment. |
8. Specifications

| Parameter | Value |
|---|---|
| Name | Curved DC regulated power supply |
| Model | TBK-218 |
| Voltage | AC110V/220V |
| Fuse | 3A (220VAC) |
| Output Voltage | DC0~30V |
| Maximum Output Current | 10A |
| Maximum Instantaneous Current | 11A (1 second) |
| Maximum Output Power | 380W |
| Current Display Accuracy | ±1mA |
| Voltage Adjustment Step | 0.1V |
| Product Size | 215*122*166mm |
| Packaging Size | 275*225*205mm |
| Net Weight | 5.2kg |
| Gross Weight | 8kg |
9. Warranty and Support
The TBK 218 Intelligent Control DC Regulated Power Supply comes with a standard manufacturer's warranty. Please retain your proof of purchase for warranty claims.
For technical support, troubleshooting assistance beyond this manual, or warranty inquiries, please contact your retailer or the manufacturer's customer service department.



