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Power Supply Switching & charging battery

EEngineer93

Feb 28, 2021
5
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Feb 28, 2021
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Y2R3vBV


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!
 

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Harald Kapp

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Seamless switching can be done with two diodes:
upload_2021-2-28_12-37-54.png
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

Feb 28, 2021
5
Joined
Feb 28, 2021
Messages
5
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?
 
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