: Test the bars to ensure the constant current stability remains firm during operation.
A: Briefly, yes. The surge rating allows 100 A for one AC cycle, but sustained current above 9 A will cause thermal runaway. Use forced-air cooling or oversize to a 15 A or 25 A relay. gyd-9e datasheet
Unlike simple voltage regulators, the GYD-9E maintains a steady current flow. This is critical for LEDs because: : Test the bars to ensure the constant
: Often sold in 10-piece bulk packs for repair shops. Amazon : Listed under brands like WEIHU . Use forced-air cooling or oversize to a 15 A or 25 A relay
Be cautious of “generic” datasheets. Verify that the pinout matches your physical module, especially pin 4’s function (some versions omit the ADJ pin for fixed output).
| Pin | Description | Connection | | :--- | :--- | :--- | | | Power Input (3.3V – 5V) | Arduino 5V / 3.3V | | GND | Ground | Common Ground | | SCL | I2C Clock Line | A5 (Uno) / D19 (Mega) | | SDA | I2C Data Line | A4 (Uno) / D18 (Mega) | | AD0 | I2C Address Select (Low=0x68, High=0x69) | GND or 3.3V | | INT | Interrupt Pin (Data Ready) | Any Digital Pin (optional) |