Le labo de Michel
Le labo de Michel
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LDM #368: Sperry AD-300C Attitude Director Indicator - Teardown and test
This video shows the teardown and test of an Attitude Director Indicator model AD-300C manufactured by Sperry.
00:00 - Intro
00:56 - Teardown
02:25 - No gear train
02:50 - Test
05:53 - Attitude circuits modular circuit
Notes:
* This ADI uses a DC motor for the roll control and a torque motor for the roll
* There is no gear train, the motors are directly linked to the gimbal for the roll and to the sphere for the pitch. This permits to save some weight and cost, the counterpart is the lack of stability when quick change of pitch or roll accurs. However this shouldn't be a problem with commercial aircraft.
* The electronics use mainly potted modules
Pinout:
26-27-28: roll synchro input
29-30-31: pitch synchro input
10: 28V attitude enable signal (from vertical gyro)
Переглядів: 2 529

Відео

LDM #367: Shahed-136 kamikaze drone servomotor
Переглядів 42 тис.День тому
This video shows the teardown, the reverse engineering and the test of a servomotor used in the Iranian Shahed-136 kamikaze drone (also called Geranium-2) . 00:00 - Intro 01:46 - Teardown 02:36 - Electronic board 03:16 - Test 06:15 - Reverse-engineering - overview 06:47 - Reverse polarity protection 08:15 - Power supply 08:54 - Brushless motor power stage 10:03 - PWM input interface 10:27 - Fee...
LDM #366: Aircraft Coffee Maker Part 2: reverse engineering
Переглядів 3 тис.Місяць тому
00:00 - Intro 00:19 - VG1000J unknown part (actually VQ1000J) 01:46 - Schematic diagram overview 02:38 - Power supply 04:31 - Modifications for 115/230V 50/60Hz 07:07 - AC-DC converter assy 08:03 - Temperature controller 10:22 - Crowbar circuits 11:42 - Logic circuits 14:28 - Capacitive probe fontend Notes: The supposed VG1000J is actually a VQ1000J: www.vishay.com/docs/70226/70226.pdf Blog: mw...
LDM #365: Atlas launcher gyro part 3: demodulator reverse engineering using X-ray Cheetah EVO
Переглядів 3,2 тис.Місяць тому
This video shows the reverse engineering of the demodulator module of a vintage gyro subsystem GR 10A-1 manufactured in 1965 and designed for an Atlas Launch Vehicle. 00:00 - Intro 01:26 - X-ray analysis using XYLON Cheeta EVO 04:07 - Preamplifier 07:53 - Complete schematic diagram 08:39 - Modulator Merci à la société Inovelec pour avoir consacré un peu de temps à l'inspection aux rayons X de c...
LDM #364: Aircraft Coffee Maker Part 1: overview
Переглядів 2,4 тис.Місяць тому
This video shows the internals of an a coffee maker used in Boeing and Airbus aircraft. 00:00 - Intro 00:45 - Front panel 02:29 - Heaters and possible modifications for 115/230 50/60 Hz 05:18 - Electronic boards
LDM #363: Atlas launcher gyro part 2: synchros and spinning test
Переглядів 3,2 тис.Місяць тому
00:00 - Intro 00:03 - Outer gimbal synchro test 01:02 - Inner gimbal synchro test 02:00 - Slip ring contact pinout 04:48 - Gyro rotor spinning test
LDM #362: Atlas Launch Vehicle Attitude Reference Subsystem Gyro - Part 1: teardown
Переглядів 6 тис.2 місяці тому
This video shows the teardown of a vintage gyro subsystem GR 10A-1 manufactured in 1965 and designed for an Atlas Launch Vehicle. 00:00 - Intro 03:25 - Teardown 05:51 - Draining the oil 08:48 - Gimbals resolvers and torque motors
LDM #361: Analysis of a military electronic boards assembly
Переглядів 14 тис.2 місяці тому
This video shows the analysis and reverse engineering of an electronic assembly which was supposed to be inside a Ukrainian "Stugna-P" missile launcher. One board contains an Atmel ATMEGA168 micro-controller which is connected to a MEMS rate gyroscope and one MEMS accelerometer. The gyroscope is soldered on a small pcb which is mounted on a small mechanical assembly. The angle of the gyroscope ...
LDM #360: Reverse engineering of a Russian missile electronic board #1
Переглядів 45 тис.3 місяці тому
This video shows the reverse engineering of a Russian electronic board. The reference of the board is "TDCK". It is the power supply board of a satellite communication receiver used in several Russian missiles. We can can this receiver in a Tornado-C missile for instance (Торнадо-С). Video: ua-cam.com/video/xJyV7AGPT_4/v-deo.htmlsi=R-ju1wXSOHIxuqTy&t=198 00:00 - Intro 00:04 - Overview 05:08 - R...
LDM #359: RAF Avro Vulcan Ground Position Indicator - MK.4 - Part 1
Переглядів 8 тис.4 місяці тому
This video presents the teardown of a vintage Ground Position Indicator which was used in Avro Vulcan aircrafts. If someone knows something about this device please let me know, particularly the purpose of the various controls on the front panel. 00:00 - Intro 03:54 - Teardown 05:16 - Disc & Ball integrator 07:33 - Mileage computations 13:44 - Normal / Fix modes 15:16 - Synchronous motor 16:14 ...
LDM #358: Marconi BMETS Meteorological Computer Interface Unit
Переглядів 5 тис.4 місяці тому
This video shows the teardown of a GEC-Marconi military computer. It is a part of the BMETS system which permits the measurement of meteorological parameters for missile flight optimization. 00:00 - Intro 01:31 - MPU13P board 04:02 - Text strings from EPROM "PRGS 1/2" dump 04:15 - Text strings from one EEPROM X28HC256 04:20 - Second board teardown 05:24 - Third board teardown (UPP20) 07:19 - Fr...
LDM #357: EPR indicator from A300-600 Airbus Simulator
Переглядів 6 тис.5 місяців тому
This video shows the teardown, the reverse engineering and test of an EPR indicator used in a simulator for an airliner Airbus A300-600. 00:00 - Intro 01:24 - Teardown - Electromechanical assembly 03:48 - Electronic boards 08:24 - Schematic diagram from reverse engineering 09:31 - EPR test About EPR: skybrary.aero/articles/engine-pressure-ratio-epr
LDM #356: Teardown of two Russian missile sensors
Переглядів 257 тис.6 місяців тому
This video shows the teardown of two Russian sensors. The first sensor is not a part of an Iskander missile but of a X-101 missile. 00:00 - Intro 00:25 - Optical sensor from X-101 missile 02:30 - 3-axis Fiber Optic Gyroscope (probably from Tornado MLRS) Links A picture of the first sensor with the optics: photo.unian.info/photo/1173510-optiko-elektronnaya-sistema-korrekcii-starogo-obrazca-raket...
LDM #355: Javelin Missile guidance computer - Part 2: answers (in French with subtitles)
Переглядів 31 тис.6 місяців тому
On this video I try to give some answers to some questions regarding the previous video. 00:00 - Intro 01:14 - My French accent 03:13 - Nice boards 04:03 - Is it legal to post this on YT ? 05:01 - SRAM dump ? 06:24 - Powering-on the boards ? 06:42 - Is it legal to own that thing ? 07:06 - Sensor 07:56 - ITAR 09:16 - Prototype ? 09:48 - Vias 09:59 - Power op-amps and fins control recorded 2023/1...
LDM #354: Javelin Missile guidance computer - Part 1: teardown
Переглядів 554 тис.7 місяців тому
This video shows the teardown of the guidance section of a Javelin missile FGM-148. Nota 2023/12/24: this video is intended to show the technology now obsolete used in the 80s-90s on military devices. Similar technology can be found in avionics for instance. On that guidance section there is nothing sensitive, it is just a complex CPU board with golden parts. 00:00 - Intro 04:09 - Teardown 06:2...
LDM #353: Radar Tuner TN-131/APR-9
Переглядів 24 тис.7 місяців тому
LDM #353: Radar Tuner TN-131/APR-9
LDM #352: Sperry Mach/Air Speed indicator
Переглядів 3,1 тис.7 місяців тому
LDM #352: Sperry Mach/Air Speed indicator
LDM #351:Astek Division Altitude Alert Indicator
Переглядів 3,4 тис.7 місяців тому
LDM #351:Astek Division Altitude Alert Indicator
LDM #350: TRT Radio Altimeter - Teardown, reverse engineering and test
Переглядів 3,2 тис.7 місяців тому
LDM #350: TRT Radio Altimeter - Teardown, reverse engineering and test
LDM #349: Blackburn Buccaneer height and rate of climb indicator
Переглядів 1,3 тис.8 місяців тому
LDM #349: Blackburn Buccaneer height and rate of climb indicator
LDM #348: teardown and test of a Kollsman Servo Altimeter
Переглядів 1,8 тис.8 місяців тому
LDM #348: teardown and test of a Kollsman Servo Altimeter
LDM #347: DC-10 Clock - Teardown, reverse engineering and test
Переглядів 2,1 тис.8 місяців тому
LDM #347: DC-10 Clock - Teardown, reverse engineering and test
LDM #346: HSI Collins 331A-8K - Part 1: Teardown and first tests
Переглядів 5 тис.8 місяців тому
LDM #346: HSI Collins 331A-8K - Part 1: Teardown and first tests
LDM #345: Cessna dual engine RPM % indicator - Teardown, reverse engineering and test
Переглядів 2 тис.8 місяців тому
LDM #345: Cessna dual engine RPM % indicator - Teardown, reverse engineering and test
LDM #344: Intertechnique Fuel Quantity Indicator - Teardown, reverse engineering and test
Переглядів 2 тис.8 місяців тому
LDM #344: Intertechnique Fuel Quantity Indicator - Teardown, reverse engineering and test
LDM #343: Columbia Servo Accelerometer
Переглядів 2,1 тис.9 місяців тому
LDM #343: Columbia Servo Accelerometer
LDM #342: Blackburn Buccaneer Gyro Reference Unit
Переглядів 7 тис.9 місяців тому
LDM #342: Blackburn Buccaneer Gyro Reference Unit
LDM #341: Indicator N2 Tachometer - Teardown, reverse engineering and test
Переглядів 1,3 тис.9 місяців тому
LDM #341: Indicator N2 Tachometer - Teardown, reverse engineering and test
LDM #340: C-5 Galaxy EPR Indicator - Teardown and test
Переглядів 1,5 тис.9 місяців тому
LDM #340: C-5 Galaxy EPR Indicator - Teardown and test
LDM #339: Smiths Distance Miles Indicator - Teardown and test
Переглядів 1,2 тис.9 місяців тому
LDM #339: Smiths Distance Miles Indicator - Teardown and test

КОМЕНТАРІ

  • @robertmonroe9728
    @robertmonroe9728 День тому

    I have a similar attitude indicator containing real servo system, but not yet reverse engineered it. It is older and looks more complex than this

  • @larryaullay5957
    @larryaullay5957 День тому

    Il y a aussi la langue française pour les français !!!

  • @mattwietlispach7606
    @mattwietlispach7606 2 дні тому

    Great teardown! That was definitely air transport class avionics. Sperry made a whole series of this model indicator to satisfy individual customer requirements. Rising runway was an option, color of the sphere, the use of one or two lights at the top of the indicator, etc. Sperry made several models for the DC-10 and the System Schematics revealed the pin functions and have simplified schematics of what is in the indicator. After wiring up the DC-10 indicator, per the DC-10 document, it worked as predicted. Pitch and roll are synchros, of course, and are used in the DC-10 indicators as well. The guts of the Sperry indicators I have look just like yours. Same module configurations and chassis construction. I then found that when I connected to other Sperry ADIs with the cable I made for the DC-10 indicators, that these indicators share a great deal of compatibility. The pinouts between the DC-10 version and the 747 version were almost identical. The critical pins that seem to appear on this class of Sperry ADIs are common. Pins such as power input(s), internal 5 volt lighting inputs, pitch X,Y,Z and roll X,Y,Z don't seem to change between models. There is even some commonality in the pins in Collins tape-type ADIs. I wish there was a way to send you just a few diagrams so you can do what I did without having to trace through all those flex circuits. If there is a way, let me know. I acquired quite a few of this series of Sperry ADIs since I needed to make sure I had spares for my 747 simulator cockpit. Changing modules is easy, but if the problem was in the sphere itself, or some kind of complex gear train for the roll function, it is best to just exchange the whole unit. Even though I have all the tools for working on these indicators, the investment in time must be considered. As one ADI dies, it may be a simple matter of swapping an amplifier module from the faulty unit. It would provide the spare parts needed to keep these masterpieces of engineering craftsmanship going. You can see the early days of my 747 cockpit at: www.petergottlieb.com/docs/747_Restoration_For_Sim.pdf It does not show the instrument testing, but that has been going on for the past 10 years now. Your work has been a HUGE help to me as you have figured out multiple 747 instruments in the past. That saves me the time of having to reverse-engineer the same indicators you already did in the absolutely fantastic videos you produce. Keep it up!

    • @timmiller8600
      @timmiller8600 День тому

      @mattwietlispach7606 Really enjoyed the file you posted. But, has the work progressed since then? It looks like it's last updated in 2012!

    • @mattwietlispach7606
      @mattwietlispach7606 День тому

      @@timmiller8600 Hi! Yes, it has evolved since 2012, but the work is not very glamorous. A lot of disassembly of control heads/panels, restoration and rewiring. The 2012 pictures are obviously outdated and different panels now populate the Flight Engineer's station and some different primary flight instruments installed. I don't have any social media accounts, or websites, detailing my progress. I can't possibly do a better job than Michel with his teardowns. Maintaining an on-line presence with updates would take too much time to maintain and I could not handle all of the questions I would get. I retired this year, which has allowed me to spend much more time on the 747 and all the support interfaces it requires.

    • @timmiller8600
      @timmiller8600 День тому

      @@mattwietlispach7606thank you. I understand, you do this for your own satisfaction! Appreciate what you _did_ share already. Good luck and enjoy your awesome creation!

  • @sebc8938
    @sebc8938 2 дні тому

    A teardown of the KOMETA-M GNSS guidance kit and other electronics of the UMPK Russian guided bombs would be very interesting also.

  • @gilleszunino
    @gilleszunino 2 дні тому

    It operates ! I love it ! Out of curiosity, how do you power aircraft equipment in the lab? These are usually designed to operate at 400Hz.

    • @lelabodemichel5162
      @lelabodemichel5162 2 дні тому

      I use the inverter described in videos 323 and 334: ua-cam.com/video/loRNTkePVnQ/v-deo.html

  • @pomanpomahovich9265
    @pomanpomahovich9265 2 дні тому

    Сельсины😂

  • @CuriousMarc
    @CuriousMarc 3 дні тому

    Indicators! My favorite! Such pretty instruments.

  • @satipsrl5207
    @satipsrl5207 3 дні тому

    merci michel...si j'ai bien compris c'est le front end d'un recepteur pour radar ...un pll mecanique avec un klystron reflex au lieu d'un varacteur en cavitee comme oscillateur local ...enfin je crois que ma definition pll est faux pcq il n'ya pas de detecteur de phase et le standard de reference . nexiste pas .la calibration se fait en fabrique sur la camme . le servo synchro sert a cherher le signal if maximum un peu comme notre afc des annees passees. Je commence a oublier mon farnçais de belgique apres 43 ans en italie ...merci beaucoup ancore

  • @hamzaarif7249
    @hamzaarif7249 3 дні тому

    Make a video on Russian anti tank missile

    • @lelabodemichel5162
      @lelabodemichel5162 3 дні тому

      Don't hesitate to send me such missile!

    • @hamzaarif7249
      @hamzaarif7249 3 дні тому

      @@lelabodemichel5162 I wish I could, you already made a video on javelin missile so I hope you can find an anti tank missile from Iran or any other country I like it's videos

    • @splitprissm9339
      @splitprissm9339 День тому

      @@lelabodemichel5162 Best to state "... packaged, and not under its own power " these days :)

  • @user-hv5ol7re9i
    @user-hv5ol7re9i 3 дні тому

    АГБ

    • @robertmonroe9728
      @robertmonroe9728 День тому

      No, it is more close to ПKП-1 from ТУ-154Б

    • @user-hv5ol7re9i
      @user-hv5ol7re9i День тому

      @@robertmonroe9728 На ту 154 выносные гировертикали. Такой стоял на ан 2 ми8 и др

  • @user-wr9le9tx8i
    @user-wr9le9tx8i 3 дні тому

    Hello! how can I support your channel? I would like to see more Soviet-style aircraft instruments. Thanks for your work Michael.

    • @robertmonroe9728
      @robertmonroe9728 День тому

      І am an expert in Soviet aircraft instruments and have a big private collection, I am Ukrainian. As well a lot of documentation. We need to create some international community including Michel, but I do not know yet how to do that. Probably the telegram group. Problem is that Soviet instruments contains a lot of precious metals and I do afraid that in such a group could be more metal collectors and instrument destroyers, rather real hobbyists.

    • @user-wr9le9tx8i
      @user-wr9le9tx8i 23 години тому

      @@robertmonroe9728 I think that it was possible to directly cooperate with Michael, to send it to him through international forwarding, such as Novaya Poshta, for review.

  • @chandin69
    @chandin69 5 днів тому

    Does anyone know why these chips are gold colour and not the typical black colour?

  • @ferosofranek8817
    @ferosofranek8817 6 днів тому

    Why some of commenters think this is copy of some Hitec servo? Servomotor like this is such primitive technology, even average student of electronics engineering is capable to develop and construct such device. Only question is - why would he do that, if such servo is already developed and constructed in china (using chinese parts) and can be bought from china for few euro/dollars 😀

  • @YaBoyFlaky5663
    @YaBoyFlaky5663 6 днів тому

    What plane is it used for?

  • @manfredbogner9799
    @manfredbogner9799 6 днів тому

    Sehr gut

  • @VirtualTransformer
    @VirtualTransformer 6 днів тому

    co to za komponenty i podzespoły to jakaś abstrakcyjna technologia

  • @erwe1054
    @erwe1054 7 днів тому

    Покажи датчик положения, на чем он выполнен ? Зачем нужна цепь FEEDBACK OUTPUT на U6 ? Это отладочный вывод?

  • @user-wr9le9tx8i
    @user-wr9le9tx8i 7 днів тому

    Thanks! Super Dual Torque Indicator.

  • @willysonntag9580
    @willysonntag9580 7 днів тому

    Sehr sorgfältig solide Konstruiert Respektvoll

  • @satipsrl5207
    @satipsrl5207 8 днів тому

    merci pour ta patience , je voudrais savoir quel est ton job habituel....moi de ma part je suis un fabricnt de plastiques avec une grande passion pour l'electronique , j'y joue depuis lage de 10 ans ..

    • @lelabodemichel5162
      @lelabodemichel5162 8 днів тому

      Je suis ingénieur indépendant, je travaille dans l'instrumentation et le nucléaire. Je fais de l'électronique depuis l'âge de 10 ans aussi.

    • @satipsrl5207
      @satipsrl5207 8 днів тому

      @@lelabodemichel5162 😉😉 merci d'avoir repondu

  • @alittlegreyhair1104
    @alittlegreyhair1104 8 днів тому

    Hello. I am an ex RAF navigator and used this equipment back in the day. The GPI Mk 4 was also in some Canberra aircraft and most likely the Victor and similar vintage aircraft. I was a navigation instructor too and the Dominie T Mk1A had the GPI Mk4 in the second navigator's position, although it had fallen out of use in the early-mid 90s.. If you have any questions of how it was used please get in touch.

  • @user-yu8rv4zf5f
    @user-yu8rv4zf5f 8 днів тому

    يقال ان محرك الطائرة هو في الاساس للدراجات النارية😊

  • @DAVIDGREGORYKERR
    @DAVIDGREGORYKERR 9 днів тому

    Someone needs to stop the Russians from getting any Gyroscopes and stop them getting GPS units so their missiles cannot tell where they are and come down in the wrong place.

  • @videostodososdiasnobartolo6883
    @videostodososdiasnobartolo6883 9 днів тому

    De fabricação chinesa?

  • @RobertF-wc5jh
    @RobertF-wc5jh 10 днів тому

    En Français serait plus compréhensible qu’en Anglais baraguiné.

  • @yourfahad81
    @yourfahad81 10 днів тому

    Stop fooling others....its just 25Kg torque servo...its available online

  • @rowanjones3476
    @rowanjones3476 10 днів тому

    Did the Russian proton-M with the backwards-installed gyro that did a back flip have such helpful text written on the box? Not that an idiot would let that stop them. Nice work as always 😊

  • @user-hx4wr3gu7o
    @user-hx4wr3gu7o 10 днів тому

    Неплохое лекарство для украины

  • @mototola86
    @mototola86 11 днів тому

    You got it dead cheap if it works😂

  • @victoryfirst2878
    @victoryfirst2878 11 днів тому

    Great video Michel. I tip my hat to you SIR. Thanks

  • @ALEFILES
    @ALEFILES 11 днів тому

    I wonder which frequency these drone use? And how is the maximum range of the transmitter? The commercial transmiters (e.g. FUTABA) only have 1500 m, and I am shure the drone transmitters gets over more than 10 Km... Nice video! Greetings from Argentina!

  • @SolarMinerPH
    @SolarMinerPH 11 днів тому

    seems like an expensive rc servo usually used for expensive rc models

  • @user-lk2jn4gs9q
    @user-lk2jn4gs9q 11 днів тому

    КАЧЕСТВО СБОРКИ НИЗКОЕ + НЕ ВОЕННОЕ ...

  • @psevdonim85
    @psevdonim85 11 днів тому

    🇷🇺🇷🇺🇷🇺👍

  • @viktorkropolin1866
    @viktorkropolin1866 11 днів тому

    Откровенмя от старого мусорщика из украинской свалки... Как маленький ребёнрк удивляется разного рода механическим деталям и конструкциям. Очевидно он живёт за счёт этого мусора, или валяет дурака...

  • @Radiokot42
    @Radiokot42 11 днів тому

    Here you can see all the Shahed components, including this one, HS-1005SGT war-sanctions.gur.gov.ua/en/components/3535

  • @piotrr5439
    @piotrr5439 12 днів тому

    The wires look so thin. Anyone?

  • @Blockrocko
    @Blockrocko 12 днів тому

    Such expensive components on a kamikaze drone... I don't know man, even though I'm an engineer and I understand military standards, this seems a bit overkill.

  • @freedomisfood6966
    @freedomisfood6966 12 днів тому

    The drops is made by England university and European.that say human right don't want isalamic regim gone because have benefit to them.

  • @aerialbugsmasher
    @aerialbugsmasher 12 днів тому

    I've been flying RC for 30+ years. This looks surprisingly typical of a hobby grade servo, although ruggedized, it reminds me somewhat of the Promodeler servo brand, but not nearly as well made. Other commenters claim its a Hitec without a badge, but I'd be more inclined to think it's a 3rd party clone, they're all over alibaba. It would've been nice if you showed us the gearbox, I would assume it's an all metal gear train, cheaper ones may use plastic or delrin gears. Very nice ones will have stainless steel gears with bronze bushings and bearings, or even titanium gears, but I think the latter make no difference other than sounding fancy for marketing. The wiring colors for the external connectors are pretty standard across the field. I've seen 3 variations, red,black, which is self explanatory, followed by white for the signal wire. This is usually the convention for Futaba servos. JR servos usually use brown for -, red, and yellow for signal. Hitec uses the the scheme seen in this specimen. The hobby ones use a dupont connector, which can be flimsy, so it's easy to see why they upgraded that. In the hobby world, I would expect this to be marketed as a high voltage digital brushless servo. High voltage in this case means 7.2v nominal, usually supplied by a 2 cell lipo battery. Smaller servos typically run on 4.5V, which was the nominal voltage for 4 cell NiCd batteries back in the day if I remember correctly. 600us to 2400us is a very typical range, however, in many hobby transmitter systems the default range is slightly less, to allow for the option to expand the range. 1500us is usually considered the center point of the servo. I'm impressed with how quiet this servo is, as many digital servos make a very obnoxious PWM whine even when idle, usually the cheaper ones. Also, this one has really good resolution. For a "high" quality servo I would expect to see 330hz PWM rates, but I've seen as high as 560. A servo of this size would be used in giant scale RC planes, 30% or larger scale. Or for very large RC trucks. Overall, looks like a pretty decent servo, and I wonder how much Iran is paying for them. Great job with your channel, keep up the good work. As a pilot I love learning the more intimate details of our instruments that are often overlooked in our training.

  • @canberradogfarts
    @canberradogfarts 12 днів тому

    PLEASE tell you spent more time dumping the code on the controller. THAT IS WHERE THE MEANINGFUL FORENSIC STUDY LIES!!!

  • @RattiDave
    @RattiDave 12 днів тому

    Proper pronunciation is Ka-mi-KAH-zee, emphasis on the third syllable …

  • @Herofromzer0
    @Herofromzer0 12 днів тому

    That servo is Hitec or Smilar Chines copy that you can find at Hobbyking.

  • @peterkull8354
    @peterkull8354 12 днів тому

    It is a bloody Hitec Servo from Korea

  • @PARS556
    @PARS556 12 днів тому

    شاهد ۱۳۱ ایرانی .

  • @monkeysfromvenus
    @monkeysfromvenus 12 днів тому

    Excuse me sir, I have a question. At 7:30, you say that a capacitor in parallel with the MOSFET's gate resistor accelerates the FET's conduction. Could you explain why? I'm learning about electrical engineering and I haven't heard about that before. Doesn't any capacitance in the gate's signal trace cause the voltage to rise slower, prolonging the period in which the gate is only slightly past the threshold voltage and heating it up? Is there a reason why an added capacitor there would increase the speed of turning the FET on? Thank you for this very thorough video, I learned a lot watching it and wasn't expecting any more than a closeup shot of the PCB.

    • @lelabodemichel5162
      @lelabodemichel5162 12 днів тому

      As all low Rdson mosfets the gate capacitance is quite large, 4.4nF for this one. This capacitor creates a time constant with the resistor in series with the gate. Adding a capacitor in parallel with the resistor creates a capacitive divider which permits to charge the gate capacitance quickly.

  • @mumbaiverve2307
    @mumbaiverve2307 12 днів тому

    Would be interesting to see the repeatability with a dial indicator or some such device... Thanks for the video !

  • @satipsrl5207
    @satipsrl5207 12 днів тому

    Merci beaucoup Michel ....le schèma est superbe exclus le systeme hall de comutation ...je pense quils ont decide comme ça pour eviter des algorithmes de commutation bases sur la force contrelectromotrice des bobines stator ou ça compliquerait le programme avec un sac d'interrupts..

    • @lelabodemichel5162
      @lelabodemichel5162 12 днів тому

      Je n'ai pas été voir dans le moteur, mais en général ce sont des capteurs à effet Hall qui sont utilisés dans les moteurs brushless. Le schéma ne montre pas les capteurs dans leurs positions réelles, le schéma du moteur est symbolique.

    • @cogoid
      @cogoid 12 днів тому

      Pour un servomoteur, il est essentiel de pouvoir contrôler le couple même lorsque le rotor du moteur ne tourne pas ou tourne si lentement que la force électromotrice ne peut pas être mesurée de manière fiable. Généralement, cela nécessite d'avoir le capteur d'orientation du rotor.

    • @satipsrl5207
      @satipsrl5207 12 днів тому

      aujourdhui existent des capteurs magnetiques avec un resolution de 12000 imp. x rev vec canaux a b et z , ou' les commutations uvw sont fournies egalment par des sorties separees , ils peuvent utiliser ce chip , comme ça ils evitent de monter les hall et l'incremental sur l'arbre de sortie ... moi de ma part j'utilise le aeae9955 pour des experiences sur un sewrvo industriel

    • @tn1509
      @tn1509 10 днів тому

      Brushless motors ESC don't use hall sensors for about 20 years. Switching technology using low resistance mosfets is widely used for 28 years

    • @cogoid
      @cogoid 10 днів тому

      @@tn1509 ESCs for small remotely controlled drones and airplanes do not need sensors, because the propellers spin at high rpm, and it is easy to estimate the orientation of the rotor by measuring the voltage induced in the coils by the magnets. But if you look at the brushless motors in industrial robots, every motor will have hall sensors. Because they have to hold high torque at low or zero rpm, when the generated back-EFM voltages are so low that they cannot be reliably measured. Lots of other applications have the same requirements.

  • @pablogeez
    @pablogeez 12 днів тому

    HS-1100WP with the HS-1005SGT case

    • @tn1509
      @tn1509 11 днів тому

      It's a copy of the HS100. The original Hitec PCB is different. There are many sources for this kind of servos in AliExpress :)

    • @monsieur3d985
      @monsieur3d985 10 днів тому

      Ces drones sont pilotés par un logiciel de navigation autonome, basé sur une centrale inertielle avec un recalage GNSS.

  • @notSLy
    @notSLy 12 днів тому

    war-sanctions.gur.gov.ua/en/components/3535