Multi-input multi-output ammeter power supply circuit

The utility model provides a multi-input multi-output ammeter power supply circuit comprising AC input and DC input, the AC input is connected with an ammeter module through a switch power supply voltage reduction module, and the AC input is connected with a first DC output through the switch power supply voltage reduction module, the voltage reduction module and a boost module in sequence; wherein the DC input is connected with the first DC output through an external power supply input module, a voltage reduction module and a voltage boosting module in sequence, the DC input is connected witha second DC output through the external power supply input module and the voltage reduction module, and the voltage reduction module is connected with an electric meter module through a reverse powersupply module. The electric energy meter has two power supply inputs and various DC outputs, and other modules with different voltage requirements can be externally mounted when the electric energy meter works. 本实用新型提供了一种多输入输