| 摘要 |
<p>An array constant-current multi-driving circuit drives a plurality of light-emitting devices connected in parallel. Each light-emitting device includes a plurality of light-emitting diodes (LED) connected in series. The constant-current multi-driving circuit includes a bias circuit for generating a bias voltage, a Keener diode controlled by the bias voltage and being capable of clamping an output voltage to a predetermined reference voltage value, and an amplifying circuit controlled by the reference voltage value and for outputting a driving current for driving the light-emitting devices. Through the predetermined reference voltage and a second resistor connected to a second transistor in each light-emitting device, the light-emitting devices are enabled to operate under a constant current, thereby achieving a target of driving a plurality of light-emitting devices under a constant current with a single Keener diode.</p> |
