12V "oring" diode with 5V on IC25
as a compromise proposal to the comments in this issue #308 (closed)
- Can we add an ORing diode to power IC25 from the standby voltage or the 12V?
if the source doesn't provide the standby voltage, or the standby voltage disappears, this will all still work, it's low power so practially any small signal diode which is already on the BoM will work; if, in the end, you want to keep it the same as your 1st design you can "not mount" the 12V diode, and it's funcitonally the same as you had it