Patent ID: 11887501
Assignee: nan
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 4:
5. The system of claim 1, wherein the PLC trainer further comprises:
a battery charger configured to receive an AC voltage from an AC outlet and charge the rechargeable battery;
a power distribution relay comprising:
an AC output port;
a first input port configured to receive an AC voltage;
a second input port connected to the AC voltage output of the inverter; and
a third input port configured to:
receive a DC voltage; and
connect one of the first and second inputs ports of the power distribution relay to the AC output port of the power distribution relay based on a level of the received voltage;

a switch configured to operate in at least two positions:
wherein at a first position, the switch is configured to connect the AC outlet to the first input port of the power distribution relay;
wherein at a second position, the switch is configured to disconnect the first input port of the power distribution relay from the AC outlet, to connect the DC voltage output of the battery to the inverter, and to connect the DC voltage output of the battery to the third input port of the power distribution relay; and

a set of one or more internal DC power supplies configured to:
receive AC voltage from the AC output port of the power distribution relay;
convert the AC voltage to a DC voltage; and
provide the DC voltage to one or more electronic circuits on the PLC trainer.