Multimeter AC/DC automatic conversion circuit

Factory direct sales - SMD aluminum electrolytic capacitor - straight plug solid capacitors, the products are imported from Japan, aluminum foil,

The multimeter AC/DC automatic conversion circuit is shown below:
The ordinary digital multimeter can be used to complete the AC and DC measurement conversion by manual operation. The new DT860D digital multimeter (multimeter is also called multimeter, three-meter, multiplexer, multimeter is divided into pointer multimeter and digital multimeter. It is a multi-function, multi-range measuring instrument, the general multimeter can measure DC current, DC voltage, AC current, AC voltage, resistance and audio level, etc., some can also measure AC current, capacitance, inductance and some parameters of semiconductor (such as β).) Use NJU9207F automatic range conversion chip with peripheral The auxiliary circuit implements an AC-DC (AC/DC) automatic conversion measurement function.