0
\$\begingroup\$

Are Make-Before-Break relays still a thing?

I have a 12v DC system I would like to switch between power supplies in such a way that the device being powered does not lose power. Sorry, NOT BETWEEN POWER SUPPPLIES, I drew a diagram and added it to the question. The idea is that the relay would enable/disable the regulator without the devices powered by the inverter noticing. It needs to handle 100-300Watts or so.

diagram

\$\endgroup\$
1
  • 2
    \$\begingroup\$ That would short two power supplies together. Not a good idea, with power supplies capable of 8 to 25 amps. \$\endgroup\$
    – Justme
    Apr 4, 2022 at 18:24

1 Answer 1

2
\$\begingroup\$

Can the power supplies tolerate being shorted together?

This can be done by using diodes from each supply without any risk of shorting.

\$\endgroup\$
1
  • \$\begingroup\$ I added a diagram and reworded the question to be more precise. \$\endgroup\$
    – FN-Support
    Apr 4, 2022 at 20:32

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.