LED power supply four-in-one light modulation circuit

The utility model discloses a LED power supply four-in-one light modulation circuit, comprising an intelligent control circuit, a PWM light modulation port, a partial pressure and linearity correction circuit, a reference circuit, a stabilized voltage supply circuit, a capacitance-resistance filter circuit, a current amplification and voltage following circuit and a light modulation output control port; the intelligent control circuit is in unidirectional connection with the PWM light modulation port; the partial pressure and linearity correction circuit is connected to the light modulation output control port through the capacitance-resistance filter circuit and the current amplification and voltage following circuit; the stabilized voltage supply circuit is respectively in connection with the light modulation output control port and the reference circuit; the reference circuit and the PWM light modulation port are respectively in unidirectional connection with the partial pressure and linearity correction c