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    ANATOMY OF THE ESC FOR BRUSHED MOTORS. HOW THEY ARE MADE AND HOW THEY WORK IN THE DETAIL OF THEIR EL
    28 Posts ยท 3 Followers ยท 3 Photos ยท 30 Likes
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    Commodore
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    AlessandroSPQR
    Commodore
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    ๐Ÿ“ ANATOMY OF THE ESC FOR BRUSHED MOTORS. HOW THEY ARE MADE AND HOW THEY WORK IN THE DETAIL OF THEIR EL
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    Hello everyone, ship modelers.

    Talking about basic electronics topics, applicable to RC naval models, this topic came to mind.

    I wanted to renew the invitation to post simple (or the simplest possible) ESC circuits for brushed motors (without Bec).

    So far there has only been the (very precious) contribution of John and RoyCV, whom I thank immensely.

    I left the question pending, waiting for simpler circuits.

    Ultimately if nothing else comes, I will take advantage of John's information and Roy's generosity.

    For my part, I have only found solutions with Arduino, but that's not what I'm looking for.

    Theoretical explanations of general operation, if not a complete circuit, will also be appreciated.
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    AlessandroSPQR
    Commodore
    ๐Ÿ‡ฎ๐Ÿ‡น Italy
    ๐Ÿ“ ANATOMY OF THE ESC FOR BRUSHED MOTORS. HOW THEY ARE MADE AND HOW THEY WORK IN THE DETAIL OF THEIR EL
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    This topic was created to collect information and suggestions on a device that is much discussed in the forum but is well known to few.

    I already have to thank you for the knowledge I have acquired thanks to you and I don't have much else to add for the moment other than this:

    I could see that Roy is a very kind and generous person.
    AlessandroSPQR
    Commodore
    ๐Ÿ‡ฎ๐Ÿ‡น Italy
    ๐Ÿ“ ANATOMY OF THE ESC FOR BRUSHED MOTORS. HOW THEY ARE MADE AND HOW THEY WORK IN THE DETAIL OF THEIR EL
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    Hi everyone.

    While waiting for further information, I would like to inform you that for the moment I am stuck.

    The ZN409CE costs more than 50 euros in total (including shipping), on Aliexpress. Incredible.


    https://it.aliexpress.com/item/1269734545.html?gatewayAdapt=glo2ita
    roycv
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    ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    ๐Ÿ“ ANATOMY OF THE ESC FOR BRUSHED MOTORS. HOW THEY ARE MADE AND HOW THEY WORK IN THE DETAIL OF THEIR EL
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    It depends on how many amps you want it to run on. You need to check the gain of the transistor and compare it with the the o/p of the transistor driving the big one.

    Electronize did a more powerful esc maybe check what was done there. I am passed that sort of design bit now, sorry!

    I mentioned I was using the 43 which was happy at 15 amps i.e. European amps not the ones they have in the far east!

    regards
    Roy
    AlessandroSPQR
    Commodore
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    ๐Ÿ“ ANATOMY OF THE ESC FOR BRUSHED MOTORS. HOW THEY ARE MADE AND HOW THEY WORK IN THE DETAIL OF THEIR EL
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    In your opinion, is it sufficient to replace the mosfet (or in any case the final power transistor) with one with a greater current capacity?
    roycv
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    ๐Ÿ“ ANATOMY OF THE ESC FOR BRUSHED MOTORS. HOW THEY ARE MADE AND HOW THEY WORK IN THE DETAIL OF THEIR EL
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    The power transistors may be mosfet but the Electronize kits I made up had the old fashioned power transistors.
    Roy
    AlessandroSPQR
    Commodore
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    ๐Ÿ“ ANATOMY OF THE ESC FOR BRUSHED MOTORS. HOW THEY ARE MADE AND HOW THEY WORK IN THE DETAIL OF THEIR EL
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    Thanks so much Roy, fast and precise.
    I believe you are referring to the mosfet transistor, not the other BJTs, can you confirm that?
    roycv
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    ๐Ÿ“ ANATOMY OF THE ESC FOR BRUSHED MOTORS. HOW THEY ARE MADE AND HOW THEY WORK IN THE DETAIL OF THEIR EL
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    Hi Allessandro. The ZN409 is a passive chip no programming needed. If you want more power a higher current o/p transistor like a OC29 or 3055 sorry can't remember the numbers. Should be cheap but I can find plenty of them in my tranny collection if needed.
    Remember these old power transistors have a 0.7 volt loss across emitter to base and develop unwanted heat.
    Roy.
    AlessandroSPQR
    Commodore
    ๐Ÿ‡ฎ๐Ÿ‡น Italy
    ๐Ÿ“ ANATOMY OF THE ESC FOR BRUSHED MOTORS. HOW THEY ARE MADE AND HOW THEY WORK IN THE DETAIL OF THEIR EL
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    Ok John, I've seen the components, I should already have many of them.

    I found that the integrated chip is precisely the ZN409CE, which you told me about in previous posts.
    As far as you know, does it have to be programmed or can it just be used like that?
    I seem to have understood from the datasheet that no programming is needed, am I wrong?

    I don't know if 15 amps are enough, because during the tests, on some occasions, I came close and in some circumstances it could easily be exceeded.
    If I have to make an effort I would prefer to do it with a circuit that guarantees higher absorption.
    However, it is not excluded that in the absence of other schemes I could start assembling it for pure fun. Let's say that, if I can, I would like to combine usefulness with pleasure.

    Even if I have already done so, I thank you again because you were really very kind and helpful in finding all this information material.

    As already mentioned, just reading the wiring diagram made me understand many things, answering many questions.

    I await other, possible, welcome technical contributions.
    AlessandroSPQR
    Commodore
    ๐Ÿ‡ฎ๐Ÿ‡น Italy
    ๐Ÿ“ ANATOMY OF THE ESC FOR BRUSHED MOTORS. HOW THEY ARE MADE AND HOW THEY WORK IN THE DETAIL OF THEIR EL
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    Sorry John, I prepared the translation and I didn't realize that you had already sent the legend.
    I'll take a look at it now.


    Hi Roy, I'm late reading you too.
    Yes, if I manage to assemble everything, the power transistor will have to have some cooling features. I kept some dissipation fins.
    I prefer to make the case in plastic even if the voltages are low.
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