Capacitor For MM 4S

[lutach]

Originally Posted by GriffinRU

Capacitors on the pcb (close to FET's) are meant for copper traces overload. (Need to be EE or better guru to get it)

Capacitors on the power leads are for poor connectors.

And none of them are meant to provide currents to power the motor, they are here for ESC.

Capacitor size is also a problem, due to the inductance. The smaller the cap (current loop) the better, but you still need to select it for the job. In that respect shorter wider caps are better, but check datasheet as well, not the price tag.
(Avoid long leads on the caps.)

Artur,

As you might know, my Schulze 18.97 failed on me. From what Mr. Schulze has said, it was because my wires were too long. I never had a problem such as this before. I know they sell capacitors that goes on the power wires, would that make a difference or would the ESC still have failed?

[GriffinRU]

Originally Posted by lutach

Artur,

As you might know, my Schulze 18.97 failed on me. From what Mr. Schulze has said, it was because my wires were too long. I never had a problem such as this before. I know they sell capacitors that goes on the power wires, would that make a difference or would the ESC still have failed?

Mr. Schulze correct (I can feel that Rene is going to kill me :)), long power leads can cause fatal failure. It is also related to the old FET drivers. And here is the problem if you have built-in protection than you will lose motor sync if you don't you can lose ESC. The best solution is to make that ESC MCU is monitoring such failure, but then you will have cogging as everyone hates. But that is what they trying to say in manuals about proper wire length and quality connections...
At the time when schulze was released such precautions were not a concern and failure to the wire length and poor motor connector were common.
But it is still hard to proof what happen to your particular ESC, because there are so many variables including aging of semiconductives and caps tend to dry over the time.
And, yes capacitors close to ESC can minimize long wires impact. Different gauge, wire length and twisting also helps.

- I can reuse brains from your schulze...

[lutach]

Originally Posted by GriffinRU

Mr. Schulze correct (I can feel that Rene is going to kill me :)), long power leads can cause fatal failure. It is also related to the old FET drivers. And here is the problem if you have built-in protection than you will lose motor sync if you don't you can lose ESC. The best solution is to make that ESC MCU is monitoring such failure, but then you will have cogging as everyone hates. But that is what they trying to say in manuals about proper wire length and quality connections...
At the time when schulze was released such precautions were not a concern and failure to the wire length and poor motor connector were common.
But it is still hard to proof what happen to your particular ESC, because there are so many variables including aging of semiconductives and caps tend to dry over the time.
And, yes capacitors close to ESC can minimize long wires impact. Different gauge, wire length and twisting also helps.

- I can reuse brains from your schulze...

I'll send it over to see if it can still be used. Artur, please check this out and see if you can change brain boards and add another power board that I have: http://www.rc-monster.com/forum/show...?t=9624&page=9 (Post #126,127 and 128). Sorry to hijack the thread btw.