Vocademy - Electronics Technology
Vocademy - Electronics Technology
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Tunnel Diode Oscillators - Solid-state Devices and Analog Circuits - Day 6, Part 13
Vocademy - Free Vocational Education - vocademy.net
Circuit simulator at falstad.com:
Tunnel Diode Relaxation Oscillator:
www.falstad.com/circuit/e-tdrelax.html
Click Circuits, Misc Devices, Tunnel Diodes, and LC Oscillator for the LC tunnel diode oscillator.
Yes, I was quoting Peter Schickele at the conclusion of the video.
Переглядів: 882

Відео

Clapp, Vackář, and Seiler Oscillators - Solid-state Devices and Analog Circuits - Day 6, Part 12
Переглядів 1,1 тис.12 годин тому
Vocademy - Free Vocational Education The Clapp, Vackář, and Seiler oscillators are based on the Colpitts oscillator. The Clapp oscillator adds a variable capacitor in the inductor leg of the tank circuit. This capacitor is typically about one-tenth of the combined capacitance of the two capacitors on the other leg of the tank circuit. Having a lower capacitance gives the variable capacitor a gr...
Tunnel Diodes - Solid-state Devices and Analog Circuits - Day 3, Part 3
Переглядів 1,6 тис.21 годину тому
Vocademy - Free Vocational Education - vocademy.net The quantum tunneling effect causes a tunnel diode to act much like a fixed resistor of about five or six ohms when reverse-biased or below about 50 millivolts when forward-biased. Between about 50 millivolts and 300 millivolts (0.05 and 0.3 volts), assuming a germanium diode, the impedance of the tunnel diode increases exponentially as the vo...
Blocking Oscillators - Solid-state Devices and Analog Circuits - Day 6, Part 11
Переглядів 2,6 тис.21 день тому
Vocademy - Free Vocational Education The blocking oscillator exploits circuit saturation to cause a sudden collapse of the magnetic field in the primary of a feedback transformer. This sudden collapse of the magnetic field causes the transistor base voltage to drop or reverse, blocking the transistor's operation. This desaturates the circuit and starts the cycle over.
Relaxation Oscillators - Solid-state Devices and Analog Circuits - Day 6, part 10
Переглядів 1,8 тис.28 днів тому
Vocademy - Free Vocational Education Relaxation oscillators exploit a sudden change in a circuit parameter when the circuit reaches a given voltage or current. This change does not reverse until a different threshold is reached (hysteresis). In the simplest example in this video, a neon light starts to conduct when a parallel capacitor charges to about 90 volts. The conducting bulb discharges t...
Crystal Oscillators - Solid-stated Devices and Analog Circuits - Day 6, Part 9
Переглядів 3,5 тис.Місяць тому
Vocademy - Free Vocational Education The transistor symbol in the schematic for a Pierce oscillator is for a PNP transistor where the 2N2222 and 2N3904 are NPN transistors. There is a link to the corrected schematic at the appropriate point in the video and here: ua-cam.com/video/SQ9_buobb9M/v-deo.html
Armstrong Oscillator - Solid-state Devices and Analog Circuits - Day 6, Part 8
Переглядів 4,9 тис.Місяць тому
The Armstrong oscillator is much like a Colpits or Hartley oscillator but with a transformer providing feedback. Vocademy - Free Vocational Education
Colpits and Hartley Oscillators - Solid-state Devices and Analog Circuits - Day 6, Part 7
Переглядів 7 тис.Місяць тому
The Colpits and Hartley oscillators use a tuned circuit to determine the frequency of operation and to provide positive feedback. Vocademy - Free Vocational Education
Wien-bridge Oscillator - Solid-state Devices and Analog Circuits - Day 6, Part 6
Переглядів 8 тис.2 місяці тому
The Wein-bridge oscillator is an astable multivibrator with a high-Q bandpass filter and controlled gain that produces sine waves. Vocademy - Free Vocational Education
Astable Multivibrator - Solid-state Devices and Analog Circuits - Day 6, Part 5
Переглядів 4,5 тис.2 місяці тому
The astable multivibrator is one of the simplest oscillators. It is simply two common-emitter amplifiers where the output of the second is fed to the input of the first. Because of its high gain, it saturates and produces square waves. Here is the link to my detailed video on the astable multivibrator: ua-cam.com/video/9eRWKh7OOHw/v-deo.html Vocademy - Free Vocational Education
Oscillator Fundamentals - Solid-state Devices and Analog Circuits - Day 6, Part 4
Переглядів 6 тис.2 місяці тому
This is part one of my series on electronic oscillators. In this video, we explore the fundamentals of electronic oscillators. What is oscillation? What kind of things oscillate? What are oscillators? We explore pendulums, acoustic feedback, and the phase shift oscillator. Learn More: How FOUCAULT PENDULUM Works...: ua-cam.com/video/8JxyT0edT6c/v-deo.html What the Phugoid is... (I need to make ...
Prelude to Oscillators
Переглядів 4,5 тис.3 місяці тому
Vocademy - Free Vocational Education I am preparing to do a video series on oscillators. Here is a short preview of where this is taking me.
Amplifier Configurations - Solid state Devices and Analog Circuits - Day 6, Part 3
Переглядів 6 тис.3 місяці тому
Vocademy - Free Vocational Education
Practical Analog Circuits - Solid-state Devices and Analog Circuits - Day 6, Part 2
Переглядів 4,3 тис.3 місяці тому
Vocademy - Free Vocational Education Learn electronics technology for free at vocademy.net Solid-state Devices and Analog Circuits Day 6, Part 2 Practical Analog Circuits
Math Review - Exponents and Logarithms - Solid-state Devices and Analog Circuits - Day 6, Part 1
Переглядів 3,8 тис.3 місяці тому
Vocademy - Free Vocational Education Solid-state Devices and Analog Circuits Day 6, Part 1 Math Review Exponents and Logarithms Learn electronics technology for free at vocademy.net vocademy.net support.vocademy.net
Linear Power Supply Teardown and Autopsy With Appearance by Dave Jones
Переглядів 2,6 тис.5 місяців тому
Linear Power Supply Teardown and Autopsy With Appearance by Dave Jones
J-FETs -- Solid-state Devices - Day 5, Part 1
Переглядів 3,8 тис.5 місяців тому
J-FETs Solid-state Devices - Day 5, Part 1
MOSFETs -- Solid-state Devices - Day 5, Part 2
Переглядів 3 тис.5 місяців тому
MOSFETs Solid-state Devices - Day 5, Part 2
KVL and Induction One Last Lash at the Dead Horse
Переглядів 1,1 тис.5 місяців тому
KVL and Induction One Last Lash at the Dead Horse
Amplifier Classes - Solid-state Devices and Analog Circuits Day 7, Part 1
Переглядів 4 тис.5 місяців тому
Amplifier Classes - Solid-state Devices and Analog Circuits Day 7, Part 1
Switching Regulators - Solid-state Devices and Analog Circuits - Day 9, Part 7
Переглядів 3,8 тис.5 місяців тому
Switching Regulators - Solid-state Devices and Analog Circuits - Day 9, Part 7
Class B Push Pull Amplifier - Solid-state Devices and Analog Circuits Day 7, Part 2
Переглядів 8 тис.5 місяців тому
Class B Push Pull Amplifier - Solid-state Devices and Analog Circuits Day 7, Part 2
Integrated Circuits -- Solid-state Devices and Analog Circuits - Day 5, Part 3
Переглядів 1,4 тис.6 місяців тому
Integrated Circuits Solid-state Devices and Analog Circuits - Day 5, Part 3
Where is the emf in a Toroidal Inductor
Переглядів 1,8 тис.6 місяців тому
Where is the emf in a Toroidal Inductor
Why Don't Batteries Discharge When you Touch Them End to End
Переглядів 1,5 тис.6 місяців тому
Why Don't Batteries Discharge When you Touch Them End to End
Why Resistance in a Power Source is Seen in Series with that Source
Переглядів 1,9 тис.6 місяців тому
Why Resistance in a Power Source is Seen in Series with that Source
Are Voltage and Electromotive Force the Same
Переглядів 2,6 тис.7 місяців тому
Are Voltage and Electromotive Force the Same
Bipolar Junction Transistors - Part 6 - Troubleshooting
Переглядів 1,6 тис.7 місяців тому
Bipolar Junction Transistors - Part 6 - Troubleshooting
Bipolar Junction Transistors - Part 5 - Characteristic Curve
Переглядів 2,5 тис.7 місяців тому
Bipolar Junction Transistors - Part 5 - Characteristic Curve
Bipolar Junction Transistors - Part 4 - Collector Current vs Base Current
Переглядів 2,7 тис.7 місяців тому
Bipolar Junction Transistors - Part 4 - Collector Current vs Base Current

КОМЕНТАРІ

  • @richardwhalen1859
    @richardwhalen1859 13 хвилин тому

    Great video. Just as an aside it shows not to be in water when working with electricity.

  • @moyanous
    @moyanous 13 годин тому

    The way I see it is that electrons and holes are not the same. Electrons can be injected into the wire or forced out of the wire by the external applied voltage. To a stationary observer, even though there is length contraction for the moving electrons and hence they should have higher density than the stationary holes, the externally applied voltage pushes enough of the electrons out of the wire to make the wire electrically neutral. For the moving cat on the other hand, the moving holes are fixed physical attributes of the wire which can not be added to or removed from by the external circuit.

  • @indrasri
    @indrasri 16 годин тому

    Very good explanation 🌅🌅

  • @user-mz6ur9re5j
    @user-mz6ur9re5j 16 годин тому

    excellent👍🌹

  • @bacasholimited2617
    @bacasholimited2617 16 годин тому

    You the best in my books 🙏🏽👏🏽

  • @jonmcmahon90292
    @jonmcmahon90292 День тому

    🙏

  • @jonmcmahon90292
    @jonmcmahon90292 День тому

    🙏

  • @jonmcmahon90292
    @jonmcmahon90292 День тому

    🙏

  • @jonmcmahon90292
    @jonmcmahon90292 День тому

    🙏

  • @jonmcmahon90292
    @jonmcmahon90292 День тому

    🙏

  • @romellabiche175
    @romellabiche175 День тому

    At 8.11 also i believe that the mistake is repeated. Where the n fet is described as p fet. I also had to confirm against other resources. If the chanel is n chanel then i belive we have an n mosfet.otherwise all very very good. I have been following the channel for 3 months now and i have made so much improvements. Thanks so much for the free lessons.keep it coming

  • @sweetblues3230
    @sweetblues3230 2 дні тому

    in my journey of electronics I learn from comparing components what they do and what will gonna happens . and I'm thankful teaching electronics fundamentals online so opportunity to learn online it's blessing for me and everyone to learn electronics for different purposes they love

  • @erkamko5445
    @erkamko5445 2 дні тому

    Was it was really clear, I appreciate your explanation very much. Thank you. p.s Actually I am in master studying in engineer of electronics

  • @aeyabeatz
    @aeyabeatz 3 дні тому

    You’re an amazing teacher 👑

  • @annaidu583
    @annaidu583 3 дні тому

    incredible video !

  • @hotjanin1988
    @hotjanin1988 3 дні тому

    Thank you for an excelent explanation on how does the circuit work

  • @nemeik
    @nemeik 4 дні тому

    your channel is very underated, best explanations on youtube

  • @nemeik
    @nemeik 4 дні тому

    excellent explanation! other video's were not clear but this way of explanating works better for me

  • @TGDPD
    @TGDPD 4 дні тому

    ❤❤❤❤❤

  • @TGDPD
    @TGDPD 4 дні тому

    ❤❤❤

  • @andymouse
    @andymouse 4 дні тому

    Bad Prof !! but I forgive you as your videos help me stacks !.....cheers.

  • @user-mz6ur9re5j
    @user-mz6ur9re5j 4 дні тому

    Your style of explanation is more than wonderful. I support this channel. Thank you for your efforts, sir👍🌹

  • @muratkaradag3703
    @muratkaradag3703 4 дні тому

    Finally a good video that explains a circuit, and what happens when you put certain devices into it and what effects it has! I think most of us know the single devices and how they work, but only if they are alone, not if they are matched together!

  • @Wil_Bloodworth
    @Wil_Bloodworth 4 дні тому

    Why the blue shirt? Do you only own one shirt? LOL. Thanks for the videos nonetheless.

    • @josippetkovic389
      @josippetkovic389 День тому

      Buddy no one is here to figure out about someone shirts.

  • @makiskouloumparitsis9203
    @makiskouloumparitsis9203 4 дні тому

    excellent video and very understandable. thank you sir!!

  • @binuabraham3875
    @binuabraham3875 4 дні тому

    Sir, Thanks a lot. For this great lecture. Keep posting such greatful lecture. God bless you.

  • @martf1061
    @martf1061 4 дні тому

    Is this how 0-10v dimmers work?

  • @hamderber4691
    @hamderber4691 5 днів тому

    I’m getting into electronics, and I gotta say, you’re a legend

  • @MrDoneboy
    @MrDoneboy 5 днів тому

    .5v/80ma=6.25ohms on my calculator.

  • @gameofquantity96
    @gameofquantity96 5 днів тому

    Very great sir

  • @sanaali3875
    @sanaali3875 5 днів тому

    Hi sir can u guide how to change circuit to drive bigger motor in small drones..

  • @flipvansaksen774
    @flipvansaksen774 5 днів тому

    So happy i came across your videos. I wish i had you as a teacher 20 years ago. Thank you !

  • @TGDPD
    @TGDPD 5 днів тому

    Thank you very much❤

  • @udaykulkarni8989
    @udaykulkarni8989 5 днів тому

    Simply great No words to express

  • @d3nt391
    @d3nt391 5 днів тому

    Best electronics teacher of all time

  • @5ty717
    @5ty717 5 днів тому

    Space itself doesn’t and spacetime does have a unique FoR for a traveling light source. Special Relativity means the source produces photons with speed of causality no faster no slower . We are neither dealing with photons nor special relativity when we measure an arbitrary drift speed in a wire. Read again if necessary. Veratasium Derek has hijacked Special Relativity along a dubious Feynman referral. Recall, charge though the wire does have a unique frame and it’s protons certainly dont move relative to the wire FoR. Recall conducting band electrons in surface of metals may be described as a unique FoR equivalent to an arbitrary potential drift velocity relative to the atomic structure of the non neutral wire. Hence what might be relative in spacetime falls on its head wrt presuming a moving FoR of protons relative to the wire lattices. No. The length contraction is ONLY relevant to relativistic velocities where time dilation offsets. No this is 10s mm/sec velocity not 3x 10^8mps . Sorry… sorry the protons are not squished the way conduction band electrons may be and the drift velocity is ten orders of magnitude too slow for the speed of causality (light-vacc) to be relevant. The problem here is of your own making trying to fit special relativity in for both + and -. Am I wrong…? Happy to be corrected. But make it watertight… cause i might plunge in otherwise

  • @adalbertomagalhaes6101
    @adalbertomagalhaes6101 6 днів тому

    Excellent, congratulations!

  • @mafhell2668
    @mafhell2668 6 днів тому

    20:53 what happened if the transistor shirted the loud will take full source voltage?

  • @adrianbordones4136
    @adrianbordones4136 6 днів тому

    Excelente explicación

  • @mafhell2668
    @mafhell2668 6 днів тому

    Great channel 👌

  • @randhircheema1642
    @randhircheema1642 7 днів тому

    Perfect explanation without bring ODEs into the discussions.I was always struggling a bit with this concept. Thank you heaps!

  • @richardneifeld7797
    @richardneifeld7797 7 днів тому

    Of you skip the real world hardeare options, then you get a clearer picture of oscillator criteria. You need amplification with out of phase feedback AND also magnitude dependence. So the magnitude is self limiting to a level less than the voltage difference.

  • @richardneifeld7797
    @richardneifeld7797 7 днів тому

    Quantum mechanics is counter logical. The only reason it exists is because it accurately models experimental data.

  • @richardneifeld7797
    @richardneifeld7797 7 днів тому

    If instead of a linear amplifier, one wants a low noise pulse generator to detect week periodic signals, could one remove the emitter resistor (allowing maximum gain of Hfe) so the output is cutoff at about Vcc and ground, to produce, in essence, digital pulses? It seems that for this alternate purpose transistor to transistor variation in Hfe, and temperature depence would not be significant.

  • @richardneifeld7797
    @richardneifeld7797 7 днів тому

    At 33:55 you add the voltage divider resistor to limit the swing of Vbase to greater than one diode drop (so the transistor does not turn off). Why not add a forward biased diode in series with the lower voltage divider resistor, to also ensure Vbase stays at greater than one diode drop above ground? Or, just replace the lower voltage divider resistor with a number of diodes whose summed diode voltage drops equals approximately Vbase?

  • @gameofquantity96
    @gameofquantity96 7 днів тому

    Appreciate you sir

  • @mikejones-vd3fg
    @mikejones-vd3fg 8 днів тому

    Ahhh its occured to me this probablity of being is sort of like consiouness, we too can be what we want but fall into a probability range with extremes on the end. Not everyones the same. Since we have it maybe the universe too has it fundamentally bult in - ability to choose your own way aka free will and it shows up how electrons behave, probabilistically.

  • @mikejones-vd3fg
    @mikejones-vd3fg 8 днів тому

    hehehe

  • @nankinanko5790
    @nankinanko5790 8 днів тому

    Wow. Simply wow.