Tung & Associates
LED bulb, light emitting device control method, and light emitting device controller circuit with dimming function adjustable by AC signal
The present invention discloses a light emitting device control method for adjusting the brightness of the light emitting device by an AC signal, comprising: receiving a signal having a turn ON angle and converting the signal to a DC signal; obtaining an average of the DC signal level, the average being a function of the turn ON angle; determining a reference voltage of a current source circuit according to the average of the DC signal level; and controlling a current flow through the light emitting device by the current source circuit.
Richtek Technology Corporation, R.O.C.
H F Y H
H05B F21K Y02B H05B
inventional additional additional inventional
Ching-Jung Pei-Cheng Jing-Meng
Tseng Huang Liu