Read some of the other answers, some of them are not easy to read (I'm not a specialist), some others do not fit my application.
A pretty simple system
- two brushed motors, each takes between 12V to 20V
- each consumes 5A at 12V
- both are driven by the same "smart" controller
However, the load (attached to the motors) may have at times (especially when a motor power gets down) a reverse move that induces a reverse current back to the controller. This disturbs the behavior of the system, and I'd live to prevent such a reverse current to flow back to the controller.
My idea is to serial branch (after checking polarity) a diode between one of the two motor legs and the controller (for each motor).
- the power (voltage) drop should be as minimum as possible
- the two diodes should bear the 12-20V (5A) as described above
What kind of diode would you advise for such system?