help in IC for switching from main power to backup power

[anthonydp]

or use an spdt relay:



NC - normally close
NO - normally open

[gunbladespecialist]

  ive learned sop many things..thanks so much guys fro pointing me in the right direction.just keep em coming

[zer0w1ng]

@zerow1ng

correc me if im wrong, pero based dun sa diode config..pero it looks like that both pwer sources are working/drawing power at the same time?

As I have stated on my earlier post, the primary power should be a little bit higher voltage than the secondary.  If in that case, there will be no power drawn from the secondary source.

[maldihtah13]

or use an spdt relay:



NC - normally close
NO - normally open

Ok ito kya lang dapat iconsider ung sudden loss of power

[gunbladespecialist]

the tps2110 seems to be the perfect solution for our design.. only problem ko ngayon is finding the reesistor values that will set the threshold voltage (the voltage that will trigger secondary power) to around 2V

[rdpzycho]

para saan ba yung application? sa application note given ata yung mga computations.