1results about How to "Smooth effect" patented technology

The utility model provides a kind of color temperature adjusting circuit and electronic equipment, including a power supply VCC and a signal output circuit for output single-channel PWM signal and the LED circuit group being connected with power supply VCC and signal output circuit respectively;Signal output circuit includes single-channel PWM signal source, isolation optocoupler (U1) and the optocoupler current-limiting resistor (R1) being connected with single-channel PWM signal source and isolation optocoupler (U1), LED circuit group includes first circuit group and second circuit group, single-channel PWM signal source, isolation optocoupler (U1) and optocoupler current-limiting resistor (R1) control the current size of first circuit group and the second circuit group and mix ratio, to realize multi-section color temperature adjustment, the utility model utilizes single-channel PWM circuit to realize the accurate proportion control of multiple LED circuit groups, to realize more accurate color temperature adjustment.