Gree program-controlled leaf fan circuit

Gree's programmable leaf-turning fan control circuit is composed of a monolithic integrated block RTS501-1B and peripheral circuits. It has three wind speeds: weak, medium and strong; three wind types: normal wind, natural wind and sleep wind. Through the combination of wind speed and wind type selection keys, 9 wind types can be selected. 7.5 hours of timing control, cumulative settings in units of 0.5 hours. It is equipped with a button buzzer; it can self-diagnose input conditions, and each function has a corresponding light-emitting diode display. The circuit is shown in the figure.