I was always under the impression that I should never combine the positive wires of different DC Power supplies. So, I have always broken the positive wire, when adding the power injection, to prevent the power from another Power Supply from mixing together, as well as preventing the power consumption from exceeding 5 Amps.
However, I just watched a YouTube Video (Power Injection Flaws Exposed -
View: https://www.youtube.com/watch?v=6Qv4fkoEZ3s
), where they said that they usually inject power into their Pixels from another power supply. According to this guy, the advantages of this method, is the power all stays at the same level, even after injecting additional power, from a second Power Supply. While the disadvantage with this is that if your controller’s Power Supply fails, then the second Power Supply would then back-feed to the Controller giving it power, but the lower voltage may then cause issues.
To prevent back powering the Controller, He was advising that a Diode could be fitted at certain points (e.g., at the controller’s port plug). According to him, this would prevent back-feeding the Controller, while still keeping the power levels uniform.
What’s everyone’s feeling on this?
He mentioned nothing about fusing, or how to prevent any fuse levels from combining from multiple Power Supplies. I would also be concerned about just commoning up all the positive wires, would then negate the safety that the Fuses give.
I really don’t know what to make of this one (Good or Bad).
However, I just watched a YouTube Video (Power Injection Flaws Exposed -
View: https://www.youtube.com/watch?v=6Qv4fkoEZ3s
), where they said that they usually inject power into their Pixels from another power supply. According to this guy, the advantages of this method, is the power all stays at the same level, even after injecting additional power, from a second Power Supply. While the disadvantage with this is that if your controller’s Power Supply fails, then the second Power Supply would then back-feed to the Controller giving it power, but the lower voltage may then cause issues.
To prevent back powering the Controller, He was advising that a Diode could be fitted at certain points (e.g., at the controller’s port plug). According to him, this would prevent back-feeding the Controller, while still keeping the power levels uniform.
What’s everyone’s feeling on this?
He mentioned nothing about fusing, or how to prevent any fuse levels from combining from multiple Power Supplies. I would also be concerned about just commoning up all the positive wires, would then negate the safety that the Fuses give.
I really don’t know what to make of this one (Good or Bad).