switching between two batteries

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neazoi

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Is there any way to do this **broken link removed** using discrete components?
for 1.2-1.5v batteries
 

It would be inefficient but I think it could be done. The first objective would be to build a voltage doubler so you have a more suitable voltage to do your controlling with. In the final stage the output from the control would then switch one of a pair of transistors to pass one of the batteries voltage through to the output.
Frank
 
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    neazoi

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