Power Supply Switching & charging battery

[EEngineer93]

So my aim is create/find a circuit that will switch between 2 power supplies as follows:

1- When generator is [OFF] - The battery will power the load

2- When generator is [ON] - The generator will power the load and supply power to the charger in order to charge the battery.

Note: Switching between both supplies must be done simultaneously to ensure no interruption of power.

Thank you!

 

[Harald Kapp]

Seamless switching can be done with two diodes:

Note that the generator needs to supply a slightly higher voltage than the battery. Otherwise the battery would power the load all the time.

 

[EEngineer93]

Seamless switching can be done with two diodes:
View attachment 51139
Note that the generator needs to supply a slightly higher voltage than the battery. Otherwise the battery would power the load all the time.

Good idea, now how would I go about supplying power to the charger this way? I believe supplying the charger before the diode on the gen side would work, correct?

 

[Harald Kapp]

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