E-Teacher
E-Teacher
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Singener Fasnet (Super 8 Film). Historische Aufnahmen.
Ein Super 8 Video der Singener Fasnet. Aufnahmedatum wahrscheinlich Ende der 1960´er Jahre. Historisches Filmdokument der schwäbisch alemannischen Fastnacht aus Singen am Hohentwiel Ende der 1960´er Jahre.
Переглядів: 362

Відео

Die Hohentwiel Gewerbeschule Singen im Jahre 1971.
Переглядів 798Рік тому
Die Fotoabteilung von 1971 der Gewerblichen Schulen Singen drehte einen „Promo-Film“ über das Technische Gymnasium. Heute heißt die Schule HGS-Singen. Hohentwiel-Gewerbeschule-Singen. 78224 Singen. Historisches Filmdokument.
Modification: Deactivating the Randy 3 PTT Time Out Timer.
Переглядів 1 тис.Рік тому
The Randy 3 PTT timeout timer (TOT) is set very short. About 3 Minutes. Here I show you how to deactivate the President Randy 3 "Push To Talk" Time Out Timer. CB radio modification. Modifikation: Der Time Out Timer des CB Funkgerätes Randy III von President ist sehr kurz eingestellt. Nach ca. 3 Minuten wird die Aussendung unterbrochen und man muß die PTT Taste kurz loslassen um den Timer zu res...
Magnetic Loop Antenne (Parallelschwingkreis) und Weltempfänger Tecsun PL-990x.
Переглядів 1,5 тис.Рік тому
In diesem Video seht Ihr eine weitere Anwendung für den Parallelschwingkreis. Ein Weltempfänger (Tecsun PL-990x) empfängt die Wetterdaten des Deutschen Wetterdienstes (DWD) auf 147,3 kHz Langwelle. Diese Daten sind im Funkfernschreibeverfahren RTTY kodiert und werden mittels Einseitenbandmodulation SSB übermittelt. SSB ist eine Variante der Amplitudenmodulation. Der auf Resonanzfrequenz (Sendef...
E1GS gemischte Schaltung
Переглядів 274Рік тому
Lösungshinweise Moodle Aufgabe E1GS gemischte Schaltung
Komplexe Zahlen mit dem TI83 (TI82 STATS)
Переглядів 755Рік тому
Komplexe Zahlen für die Elektrotechnik mit dem TI-82 STATS / TI83. Workaround für die Eingabe von komplexen Zahlen in Polarform auf den genannten TI Taschenrechnern.
Aufgabe Wechselstromrechnung mit komplexen Zahlen TI83 (TI-82 STATS)
Переглядів 277Рік тому
Anwendung der komplexen Wechselstromrechnung mit dem TI-83 Taschenrechner.
Phasenverschobene Ströme
Переглядів 130Рік тому
Wie sehen komplexe Ströme im Linienbild (Simulation, Ozillogramm) aus.
Transistor Grundschaltungen 01
Переглядів 466Рік тому
Woher erhalten die Transistorschaltungen Ihren Namen. Eigenschaften von Emitterschaltung und Kollektorschaltung. Überblick.
Vierquadranten-Kennlinienfeld Funktion der Emitterschaltung
Переглядів 730Рік тому
Die Funktion der Emitterschaltung am Vierquadrantenkennlinienfeld erklärt.
Transistor Basisspannungsteiler
Переглядів 2,5 тис.Рік тому
Berechnungen am Transistor. Wie werden die Widerstände R1 und R2 eines Basisspannungesteilers berechnet. Emitterschaltung.
AD/DA Grundlagen
Переглядів 2,5 тис.Рік тому
Eine kurze Einführung in die Analog nach Digital und Digital nach Analog Wandlung.
Digital nach Analog Umsetzer mit OPV und gewichteten Widerständen.
Переглядів 542Рік тому
DAC Digital to Analog Converter. Prinzip DA mit gew. Widerständen
DAC mit R2R Netzwerk
Переглядів 1,9 тис.Рік тому
Wie funktioniert die Digital nach Analog Wandlung mit einem R2R Netzwerk?
Berechnung einer realen Emitterschaltung.
Переглядів 476Рік тому
Berechnung einer realen Emitterschaltung (Spannungsverstärker). Mit und ohne Stromgegenkopplung. Diese Kann z.B. als Mikrofonverstärker dienen...
Emitterschaltung mit Potis
Переглядів 86Рік тому
Emitterschaltung mit Potis
FA 205 AD Wandlung mit Poti
Переглядів 137Рік тому
FA 205 AD Wandlung mit Poti
Reale Emitterschaltung Messungen
Переглядів 298Рік тому
Reale Emitterschaltung Messungen
Die Reparatur meines Tablet Stifts
Переглядів 397Рік тому
Die Reparatur meines Tablet Stifts
Kollektorschaltung Einführung
Переглядів 560Рік тому
Kollektorschaltung Einführung
Drehzahlregelung mit Ardunio
Переглядів 146Рік тому
Drehzahlregelung mit Ardunio
Sprungantwortaufnahme DC Servo Motor
Переглядів 150Рік тому
Sprungantwortaufnahme DC Servo Motor
Lösung Sprungantwortaufnahme DC Servo Motor
Переглядів 75Рік тому
Lösung Sprungantwortaufnahme DC Servo Motor
AD Verfahren erklärt
Переглядів 382Рік тому
AD Verfahren erklärt
Sinusfunktion Grundlagen
Переглядів 128Рік тому
Sinusfunktion Grundlagen
Kollektorschaltung Vertiefung
Переглядів 331Рік тому
Kollektorschaltung Vertiefung
Aufbau des Operationsverstärkers - Differenzeingangsstufe
Переглядів 242Рік тому
Aufbau des Operationsverstärkers - Differenzeingangsstufe
Kondensator an Wechselspannung
Переглядів 113Рік тому
Kondensator an Wechselspannung
Effektivwert einer Wechselgröße
Переглядів 105Рік тому
Effektivwert einer Wechselgröße
RC Reihenschaltung
Переглядів 77Рік тому
RC Reihenschaltung

КОМЕНТАРІ

  • @Xitrun
    @Xitrun 3 місяці тому

    Thank you for sharing. How nany speakers does it have this radio?

  • @DJeno54
    @DJeno54 5 місяців тому

    I have found this issue with my pl990 when the battery is running low.

  • @alexanderthomas2660
    @alexanderthomas2660 5 місяців тому

    Nice of you to shim it twice, so we know it was not a fluke!

  • @wavezone2566
    @wavezone2566 6 місяців тому

    Please tell me, will adjusting the AM 1st Mixer help to remove the frequency deviation by SW?

  • @timosuvanto3902
    @timosuvanto3902 8 місяців тому

    hello all Tecsun pl990 gurus, i hava problem with my Tecsun Pl990, i made big mistake and connect wrong type external power supply (5v and 5a) in tecsun micro usb connector so smd componet in near micro usb connector burn totally black the smd sitting between +5 and ground does some nows and tell me what type smd componet it is, also there near is empty place named c124 and c125....

    • @pablosolis6726
      @pablosolis6726 Місяць тому

      Donde se podrá comprar el modelo PL990x...recalco la x ...según leí por ahí es ensamblado en Japón ( lo que no es certero). Con respecto a puertos USB, al igual que en teléfonos se recomienda 1- enchufar el receptor de primero 2- enchufar transformador en corriente alterna sin el cable y 3- enchufar cable a la fuente de corriente directa. Con eso se alarga la vida de los microcontactos eléctricos, a saber hembra y macho, al no haber el chisporroteo normal y tampoco picos de corriente. Saludos.

  • @MAXSHNC
    @MAXSHNC 8 місяців тому

    Love you

  • @1Barsamian
    @1Barsamian 9 місяців тому

    What is with these idiots smacking their lips during these radio videos. They are annoying.

  • @kolakoala6702
    @kolakoala6702 10 місяців тому

    My wife wants a combiantionlock for our bicycle garage because we are six people and she doesn't want to fiddle around with keys. And I am in dispair. I cant use a giant lock like the 190 cs. Maybe I just go with the 180IB and glue the gap with cyanoacrylate. That should do it, right?

  • @agnelomonteiro5464
    @agnelomonteiro5464 11 місяців тому

    After seeing this video showing the hidden microphone of the Tecsun PL-990x, I thought a little about what this microphone is for. So I decided to do an experiment that seemed obvious to me, which allowed me to discover the function of the hidden MIC: I paired, via Bluetooth, the radio with my smartphone, and instead of using it to play music, I decided to make a call ― et voila ― I was then able to use the radio to listen and speak without needing to do so on my smartphone.

  • @skyblazer9137
    @skyblazer9137 Рік тому

    I got a new 990x last week plugged in the charging cord and pow the cord caught on fire where it plugs into the radio. No damage to the radio caught it just in time. Cord is too thin and short. Can't find another cord for the 990x. Be careful------

    • @alglen9208
      @alglen9208 11 місяців тому

      This is why I gave my PL-660 to a friend. Great radio when it had fresh batteries. Had to take out batteries when I got done using it. Charger was wrong polarity. Won't buy another Tecsun.

  • @timariaans1710
    @timariaans1710 Рік тому

    Where can I find this pick tool ?

    • @yggdrasild755
      @yggdrasild755 22 дні тому

      did you find it yet ?

    • @timariaans1710
      @timariaans1710 21 день тому

      @@yggdrasild755 No not yet. I screwed myself with this lock by changing the combination and when testing I twisted the numbers again before removing the little key haha...

    • @yggdrasild755
      @yggdrasild755 21 день тому

      @@timariaans1710 Lol. -I found one in the trash. I think I'll try to make a pick out of an old vegetable knife as picks are kinda expensive online -🥒🍅🍆

  • @ezaun7134
    @ezaun7134 Рік тому

    Cooles Video!

  • @zimilanga
    @zimilanga Рік тому

    I own a tecsun pl 600, my device works, but the keys sometimes work and sometimes they do not, the power button is rarely turned on, even if the device is turned on, the screen does not turn off when the radio makes a sound, the screen shows no problem, but the buttons rarely work, what could be the problem?

  • @Juani2392
    @Juani2392 Рік тому

    What tools do I need to desolder and resolder those pieces? Is it an easy task to perform simply with a cautin ? Did you use solder paste , flux or some other element for the job?

  • @Juani2392
    @Juani2392 Рік тому

    i want to know if this problem with hight consumption it is a particular issue of this radio.. or all the PL990 radios of the market

  • @BD-np6bv
    @BD-np6bv Рік тому

    At least you can't do it by hand only like with Master Locks lol

  • @garydonamon749
    @garydonamon749 Рік тому

    Hi folks, I just measured the standby current consumption on my PL-990x when it's turned off. It is about 150 microamperes. Not too shabby. Bought the radio just 3 days ago.

  • @zxeng6064
    @zxeng6064 2 роки тому

    I wonder if you could investigate why SSB oscillator becomes unstable above 21 MHZ to test tune to a SSB station example 27.385 LSB to see what I mean. (AM is good)

  •  2 роки тому

    I also experience both annoying issues with my device. It has release 9902 firmware. The standby current is 4.3mA in my case which is too much. It is a pity that you did not find the root cause of the high standby current issue in your another video. However I appreciate your presentation. Many thanks. To avoid deep discharging of the battery it is recommended to use a 18650 Li-Ion cell which includes over-discharge protection circuit. Actually what I have in my radio have this circuit. At least it cut its output when the voltage drops below ~3.5V. I bought my radio for ~200 EUR, so I am still happy. :)

  • @zzxxenith
    @zzxxenith 2 роки тому

    I have discovered a major issue with the 990x on SSB on the higher bands. Example tune to some SSB speech on 27.385 Mhz LSB or USB horrible DSP Warbling / wobble not to be confused with AGC issue on the oscillator seems to be the whole top end of the band on SSB rendering SSB useless possibly 25 to 29 MHZ however AM seems ok. Going to be a whole lot of disappointment owner's when the solar cycle comes up opening the top bands. I Believe this was an issue with some early 880's

    • @alternative3d87
      @alternative3d87 Рік тому

      My PL880 that I bought a month has this SSB issue above 21mhz. This is one of many issues I am having with this radio. Disappointed in this product.

    • @zzxxenith
      @zzxxenith Рік тому

      @@alternative3d87 the 990 has the same issue has anyone found a solution?

    • @alternative3d87
      @alternative3d87 Рік тому

      @ zzxxenith I don’t think a solution has been found. Mine has the newest firmware and SSB is still warbling above 21 mhz. This and the volume issue is not going what I expected. Looks like the 990x is suffering from the same fault.

  • @BD90..
    @BD90.. 2 роки тому

    Nice bypass

  • @kamalzoro
    @kamalzoro 2 роки тому

    😊 microfone ?

    • @e-teacher9402
      @e-teacher9402 2 роки тому

      As mentioned by scottjweber: The microphone is for when using Bluetooth to make a phone call with a connected phone.

  • @josemesquita603
    @josemesquita603 2 роки тому

    Excellent troubleshooting procedure. The issue was for sure remains of the automated soldering that the automated cleaning did not remove, and the final test did not revealed the anomaly because they are not testing the standby current, or else they just test one in each 100 units

  • @josephdeery4931
    @josephdeery4931 2 роки тому

    I have found this issue with my pl990x but only when the battery is running low. Actually for me even though this is a problem with the radio it works out quite well for me as I have no sight and this means I know when the battery is running low!!!!!!! Thank you for the video

  • @ChuckCLJ
    @ChuckCLJ 2 роки тому

    I have this exact same issue. I was hoping there was a firmware fix but no joy.

    • @ChuckCLJ
      @ChuckCLJ 2 роки тому

      I have firmware 9905

  • @StratmanII
    @StratmanII 2 роки тому

    Thanks for sharing this teardown video, I've subscribed to your channel! 📻👍🏼 I have a Chinese market PL-990, purchased in November 2021. It has the firmware 9902B like WaveZone, but I have not noticed a battery drain even when my radio is put away for a month. Do you suppose Tecsun's PL-990 circuit board was poorly designed or it so happened that the unit which you own was soldered poorly at the factory, which caused the micro current leakage? I know very little about electronics (I remember the term Schottky diode but have no idea what it's used for) but really appreciate what you've shown in this clip. 🙏🏼☺️

  • @SawyersHerpetology
    @SawyersHerpetology 2 роки тому

    I tried this using the bypass tool in the video abd not the pick since I don't have it and it doesn't seem to work, is it because that tool isn't strong enough to push the mechanism to open it?

  • @mos8541
    @mos8541 2 роки тому

    was there supposed to be a voice over? just those typed instructions with the vid alone were not helpful in any way

    • @TheOmgzach
      @TheOmgzach Рік тому

      It was pretty self explanatory…

  • @sonnenscheinhasser
    @sonnenscheinhasser 2 роки тому

    Ordered this item at amazon and saw your video a few minutes later. Cancelled my order immediately. Thanks for preventing me buying crap :-)

    • @e-teacher9402
      @e-teacher9402 2 роки тому

      I'm glad the video could help you. That was the intention...

  • @WilhelmTell_CH
    @WilhelmTell_CH 2 роки тому

    Mikrofon: Ich habe gegoogelt und was gefunden bei Anon. Das Mikrofon ist für MP3-Aufnahmen.

    • @e-teacher9402
      @e-teacher9402 2 роки тому

      Hallo Hans, hast Du auch rausgefunden, wie eine Aufnahme gestartet wird? Das wäre der Knaller, denn das weiß bislang niemand! Ich halte die Antwort von scottjweber für sinnvoll. Freisprecheinrichtung wenn das Smartphone per Bluetooth verbunden ist...

    • @StratmanII
      @StratmanII 2 роки тому

      @@e-teacher9402 I agree with you. Certain Retekess portable radios allow off the air recording to the micro SD card, but Tecsun's PL-990 does not. If recording was possible it would have been a documented and an advertised feature for this receiver. Hands free speaker feature seems a more logical explanation for the microphone's presence. ☺️

  • @Pirrof
    @Pirrof 2 роки тому

    Is the board inside the generator itself?

    • @e-teacher9402
      @e-teacher9402 2 роки тому

      The board is inside the LED lamp assembly, not inside the M66 generator.

  • @vxtro5702
    @vxtro5702 2 роки тому

    is there any way to crack it without tools ? by feeling or something?

    • @e-teacher9402
      @e-teacher9402 2 роки тому

      With this type of locks, it is not possible to tension the core using the shackle. So there's is no "feel" only method without using tools. In addition the wheels are well shielded against feeler gauge attacks...

    • @heynow01
      @heynow01 Місяць тому

      ​​@@e-teacher9402what is the thickness of that decoder blade for the Abus combo? Are they available to purchase or must they be modified after purchase?

  • @scottjweber
    @scottjweber 2 роки тому

    The microphone is for when using Bluetooth to make a phone call with a connected phone.

    • @e-teacher9402
      @e-teacher9402 2 роки тому

      Thank you very much for this explanation!

    • @StratmanII
      @StratmanII 2 роки тому

      Thank you, I wasn't aware that the PL-990 could be turned into a speaker phone on a Bluetooth call. I have always thought the radio's BT was for playing music from a smartphone or laptop. The radio doesn't seem to want to pair with my Sony BT earphones though, which is a shame as it would be great to be able to use a wireless headphone set instead of a wired one.

  • @e-teacher9402
    @e-teacher9402 2 роки тому

    Finally I solved the Tecsun PL-990x standby current problem! Video Link: ua-cam.com/video/yx2br2XNpD4/v-deo.html

  • @wavezone2566
    @wavezone2566 3 роки тому

    Hi! What firmware version does your 990x have?

    • @e-teacher9402
      @e-teacher9402 3 роки тому

      I have no idea, how to check the firmware version at the Tecsun PL990x. Is there a key combination? As far as I know it is not possible to update the firmware.

    • @e-teacher9402
      @e-teacher9402 3 роки тому

      Ok, I think I figured it out: (Radio off) Hold AM BANDWIDTH + until the display shows all entries. Then release the Button and press AM BANDWIDTH - . My firmware version seems to be: 9902

    • @wavezone2566
      @wavezone2566 3 роки тому

      @@e-teacher9402 I have the same volume problem. I am from Russia and I apologize for the possible incorrect translation. I have 9902B software. It's just that one seller claims that his receivers have firmware with the number 990E4 and these receivers have no volume jumps when the battery is discharged, at least he says that he did not notice this. I think that this bug is unlikely to be fixed with firmware, so I guess he's lying))

    • @e-teacher9402
      @e-teacher9402 3 роки тому

      @@wavezone2566 Thank you very much for this information. Gernerally, I think it's a shame that in 2021 Tecsun is not able to provide firmware upgrades wich can done by the user. The radio has a USB connector and a SD card slot, so this should be not a problem.

    • @wavezone2566
      @wavezone2566 3 роки тому

      @@e-teacher9402 I completely agree with you. But I strongly doubt that the problem with the volume will be solved with the help of an update, because this bug stretches all the way from the pl-880, everything is the same and only a good battery can partially solve the problem. And the battery that comes in the set with the receiver, to put it mildly, is not very good, it is discharged for a long time, but the necessary current does not hold. But in general, I really like the receiver, it is the best that is on the market. Its closest competitor, the sangean 909x2, has less sensitivity on the telescope and a problem with battery power.

  • @khalilkhalil-kj2jf
    @khalilkhalil-kj2jf 3 роки тому

    😇