Abstract: A convergence type power supply device includes a supply circuit and a filter circuit, and both circuits receive a rectified pulse DC power, and the supply circuit supplies the pulse DC power to a load directly when the filter circuit is charged, and the voltage of the pulse DC power becomes higher after the filter circuit is charged, and the filter circuit filters the pulse voltage to supply a filter DC to the load, so as to achieve the effect of enhancing the power factor.

Abstract: 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.