Device for charge high temperature protection of built-in portion of power frequency

The utility model discloses a device for charge high temperature protection of built-in portion of power frequency needs the device surface of temperature measurement to set up the temperature-sensing switch respectively in the machine is charged to the power frequency, it charges among the trigger circuit of the I0 end that corresponds on the singlechip in the machine to insert the power frequency respectively with each temperature-sensing switch, said trigger circuit includes the divider resistance of two mutual series connections, and the divider resistance of two series connections connects between the I0 port and positive on the singlechip, a pin ground connection of temperature-sensing switch, another pin of temperature-sensing switch is connected between two divider resistance that concatenate, when charging the operating temperature of built-in portion when too high, the singlechip enables the power frequency machine time-out work of charging, shows the fault code of this high temperature device simultaneously on the display screen, is convenient for in time examine and repair and handle to bigger potential safety hazard is avoided causing, and then the charge long-term safe application of machine of power frequency can be effectively ensured.