HL 6+ low voltage

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50koruny
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Re: HL 6+ low voltage

Post by 50koruny »

Herr Dr. Professor wrote: Wed Jun 26, 2024 3:28 pm Please indulge my sense of humor. Compare the exchange above between abramsky and 50koruny to that between Ecam and me. We function on hilariously different levels here on RCTW. It's fun! :haha:
Both conversations seem normal to me.
But maybe I'm a little weird. :haha:
abramsky wrote: Mon May 03, 2021 2:53 pm Hello after the break. The given parameters refer to the current efficiency of a single MOSFET. So you treat these values ​​for each engine separately. Although I have never managed to block the motor so much that it draws more than 10A - but my son managed to burn one of the 3 windings of one motor - MOSFETs are doing very well for this.
In MFU TK 6.0/6.1 and TK 7.0/7.1 there are a total of 8 MOSFETs, 4 on each side of the PCB (2x left front, 2x right front, 2x left rear and 2x right rear).
Thank you for the explanation.
Yes, in that case its a little bit overkill and it may damage motors.
80A is great, but probably too much in most cases.
Most motors get destroyed when taking more than 10-15A when blocked.
But since the controller can't be programmed via USB, there's certainly no way to limit the power of the Mosfet the way MTCU/OpenPanzer does, for example.
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abramsky
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Re: HL 6+ low voltage

Post by abramsky »

Exactly. The engine blockage caused one of the three engine windings to burn. In fact, it's even better because replacing burned an SMD MOSFETt is a nightmare if you don't have the appropriate equipment and requires more work than replacing the motor. Since replacing 8 pcs of SMD MOSFETs with weaker ones is probably out of the question (and does not make sense for the reasons given above) - it is much easier to install fuses (e.g.10A - but no more than MAX motor stall current) on each of the 4 wires coming from the MOSFET MFU - for engines.
Herr Dr. Professor - it's probably because we are both Slavs ( I'm from Poland - 50koruny from the Czech Republic, I think) :)
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50koruny
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Re: HL 6+ low voltage

Post by 50koruny »

Yes, we are both Slavs. :D
I am from Slovakia, living in Hungary.
Interesting idea with that fuses.
Definitely the best solution.

Maybe something like this, if there is enough space in the model.
61oBCrCMkZL.jpg
61oBCrCMkZL.jpg (73.53 KiB) Viewed 1529 times
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