High-precision temperature control circuit with DAC amplification circuit

The invention relates to a temperature control circuit,belongs to the field of laser equipment,and particularly relates to a high-precision temperature control circuit with a DAC amplification circuit. The circuit comprises an NTC temperature measurement circuit,a single chip microcomputer and a laser,wherein the NTC temperature measurement circuit is connected with the laser and used for measuring temperature of the laser and sending measurement data to the single chip microcomputer; the single-chip microcomputer is used for receiving temperature data measured by the NTC temperature measurement circuit and controlling the working of a TEC thermal energy converter through an H-bridge circuit and a DAC constant current circuit; and the laser is connected with the TEC thermal energy converter. The high-precision temperature control circuit with the DAC amplification circuit has the advantages that under the condition of higher output power stability requirements,the power fluctuation issmaller,the laser can be