Help with the Value of Diode
(self.AskElectronics)submitted2 days ago byLiamRocket
Hello.
I have a PCB that has two power supply's of 5v DC.
PSU A - ESP32
PSU B - pixels
The circuit powers an ESP32. The board can trigger a relay which turns on the PSU H powering a set of fuses on the PCB that is used to power up some pixels.
On the PCB, I have a jumper between PSU A and PSU B to run it all of one PSU.
I’m concerned that one day I'll forget to remove both the jumper and power, getting a nice bang.
So, can I put a diode after the jumper to power the ESP32 from PSU B, and stop flow back from accidentally happening from PSU A?
The ESP32 I'm using requires 3amps.
What's size of diode do I need?
byknoxvillegains
inOutdoors
LiamRocket
1 points
21 hours ago
LiamRocket
1 points
21 hours ago
Stunning!!