Supports dimming from 30% to 100% (roughly 300–1000 nits depending on the LED strips used).
Plug the connectors of your newly installed LED strips directly into the dual output ports on the GYD-9E board.
This is the most common use case. A PLC or microcontroller triggers the GYD-9E to switch a 120 VAC / 240 VAC heating element.
These features make the GYD-9E suitable for battery-powered, industrial, and automotive applications (though not certified for high-voltage automotive without additional protection).
Choose R2 = 1kΩ. Then R1 = (5V/0.8V – 1) * 1kΩ = 5.25kΩ (use 5.1kΩ + 150Ω in series). gyd-9e datasheet
| Problem | Likely Solution | | :--- | :--- | | | Check VCC and GND. Pull SDA/SCL up with 4.7k resistors. | | Yaw drifts constantly | The magnetometer needs recalibration. Run a calibration sketch. | | Very noisy readings | Add a 10µF capacitor between VCC and GND near the module. | | High temperature | Do not exceed 5V. Use 3.3V if available. |
K[ON/OFF Control<br>3.3-5V] --> C L[PWM Dimming Signal] --> C
What is the of the LCD panel you are upgrading?
Enable Signal. Toggles the backlight on (Logic High) and off (Logic Low). Yellow / White Luminance Brightness Adjustment via Analog or PWM signals. GND System ground return path connected to host frame ground. ⚡ Circuit Operation and Schematic Overview Supports dimming from 30% to 100% (roughly 300–1000
Retailers like Latinafy carry individual replacement boards for specific TV models. If you'd like, I can help you find: The exact wiring diagram for your specific monitor model. LED strip kits that are compatible with this board. A step-by-step repair guide for a CCFL-to-LED conversion.
Its primary value lies in its role as a workhorse for monitor repair and CCFL-to-LED retrofits, a common project for electronics enthusiasts. With an input range of 10-30V, an adjustable constant current output up to 1000mA, and simple control interfaces for ON/OFF and PWM dimming, it provides a practical, off-the-shelf solution for a specific but common task in the world of display technology. By understanding the compiled specifications and following best practices for installation, safety, and troubleshooting, technicians can successfully implement the GYD-9E in a wide range of projects.
| Module | Input Range | Output Current | Efficiency | Key Advantage | |--------|-------------|----------------|------------|----------------| | | 4.5-28V | 3A | 96% | Good balance of size and power | | LM2596 module | 4.5-40V | 3A | 85% | Higher input voltage | | MP1584 module | 4.5-28V | 3A | 94% | Smaller size, lower cost | | XL4005 module | 5-32V | 5A | 92% | Higher current |
The logic signal that triggers the module's step-down operation. Applying a high logic level ( 3.0V to 5.0V ) turns the backlight on, while a low logic level ( 0V to 2.5V ) enters shutdown mode. A PLC or microcontroller triggers the GYD-9E to
. In most hardware modifications, this taps directly into the main filtering capacitor of the power supply unit (PSU) board.
| Parameter | Value / Range | Notes | | :--- | :--- | :--- | | | DC 10V - 30V | Commonly 12V or 24V systems. | | Output Current (IOUT) | 10mA - 1000mA (1A) | Adjustable via changing sense resistors. | | Output Voltage (VOUT) | ~7.5V - 9.5V (up to 9.6V) | Automatically adjusts based on the LED load's forward voltage. | | Control Interface | ON/OFF, PWM Dimming | Requires a 3.3V - 5V logic signal for control. | | Physical Dimensions | ~70mm (L) x 20mm (W) x 12mm (H) | | | Typical Application | Backlight for 15" - 24" LCD panels | | | Key Components | PTD 11N20C (MOSFET), DF6113 / PW25896 (Controller IC), SS210 (Diode) | |
The electrical ground. This must route directly to the main power chassis or power supply ground to prevent ground loops. ⚡ Circuit Schematic Architecture