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Link has been changed to the kit in our online-shop where you can also find the documentation. Should work now. Built-manual is only in German until now.

​@@KainkaLabs Thanks!

Rubbish. High Q-factor antenna give you much higher antenna voltage/energy and better separation of channels. You just have to match the input impedance of the receiver/crystal-readio to the high output impedance of the antenna for not loosing the precious energy due to impedance mismatch.

Yes, but much more difficult to wind. The "spider web coils" have low enough self capacitance for tuning the whole AM-range with a 500 pF variable capacitor. More important than the self-capacitance is the lower (external) proximity effect of the star-like coil!

Link has been changed to the kit in our online-shop where you can also find the documentation. Should work now. Built-manual is only in German until now.

WHERE do and WHY do they use silver? What argument do you have against my reasoning and experience and even the demonstration showing an old silver-wire which is clearly sulfurized and thus has more resistance in RF-applications compared to enameled or PU-coated copper-wire?

@@KainkaLabs I’m not trying to argue. I’m just curious if there’s a reason as to why to make sure I’m not missing anything. Thanks!

Ah. OK. So, I didn´t know for what purpose and for what reason silver is used in rockets or in cruise-missiles like Tomahawk. Do you have a link where I can find that? Then I can tell you if they make/made the same "mistake" as those who use silver wire (or silver-clad wire) in electronics for the initial slightly lower resistance than copper or if it is a completely different reason.

What? Please use correct English. I can´t understand this glibberish.

@@KainkaLabs मेरे को आपका ये सर्किट diagram मिलेगा THD meter circuit diagram please give me

In academic theory you are correct. In "real life" most people (including me) knwo what I mean and in HiFi-amplifiers this term is used forever and everybody understands what is meant.

You are right. This was an error I made during the recording and which escaped my attention. Some people in the comments have noticed this error.

Link is corrected. Try it here: 1drv.ms/u/s!AmW9-q-1GZM1ip5wO7uvHpcenfI14g?e=m4TqeJ

Link has been changed to the kit in our online-shop where you can also find the documentation. Should work now. Built-manual is only in German until now.

What do you mean by "ganged capacitors". Like the metal one which is shown in the video? Use compressed air for the metal plates. If the axle is stuck, soak it in acetone or another organic solvent and relubricate it with modern "non-ageing" grease.

The answer is "corona discharge" and "electrostatic influence" :-)

Yes, I´m still alive. New videos will follow soon. I was extremely busy in the last 3 years.

​@@KainkaLabsI was wondering exactly the same thing. I'm so glad you are well!!!

This is where you find most products from this video-series: www.ak-modul-bus.de/stat/laborzubehoer.html (Delivery worldwide to all English-speaking countries, but expensive outside of Europe)

The explanation is "electrostatic induction" + "corona discharge" through the isolation :-)

Really? And what if you have a complex load? What you mean is only valid with purely resistive loads.

@@KainkaLabs My point was that there is no such thing as RMS power. It is only average power. The complex load situation means that you need to multiply by the COS of the phase angle to get power. That is always true.

So you take a (very) complex load like a loudspeaker and feed a pink noise signal into it. What happens with your argumentation/definiton? There is no cos(phi) in that situation to work with. The measurement device that I show in the video does accurately measure the RMS power (or if you like real power or true power) in that situation, because -as you will know- the RMS-value is the equivalent value that develops the same amount of heat in a resistor. You say "there is only average power". Which kins of "power" do you mean to be averaged in that definition? Active, reactive, apparent or complex power??? So your definition is incomplete, while the definition of any RMS-value is always related to how much heat is developed in a resistor. So the definition of RMS-power is unambigous, while "average power" can be interpreted in many ways (see above). Every practical working person (except perhaps university teachers for theortivcal physics or theoretical electrical engineering in their ivy towers) knows what is meant by and how to interpret "RMS power". en.wikipedia.org/wiki/AC_power#Apparent_power

Link is corrected. Try this one: 1drv.ms/u/s!AmW9-q-1GZM1ip5wO7uvHpcenfI14g?e=m4TqeJ

Link is adjusted. Try this one: 1drv.ms/u/s!AmW9-q-1GZM1ip5wO7uvHpcenfI14g?e=m4TqeJ

not even because the url provided doesn't work anymore...

New link: 1drv.ms/u/s!AmW9-q-1GZM1ip5wO7uvHpcenfI14g?e=m4TqeJ

Link has been changed to the kit in our online-shop where you can also find the documentation. Should work now. Built-manual is only in German until now.

Link has been changed to the kit in our online-shop where you can also find the documentation. Should work now. Built-manual is only in German until now.

No, because the componetn tester cannot differentiate between Germanium ans Schottky diodes. They have the same forward characteristic, but usually the reverse current is not measured. And the reverse current makes the difference.

That´s basic electronics: Put a constant voltage at an inductor and current rises linearly (until either ohmic resistance or saturation of the ferrite material sets in)

@@KainkaLabs But I=V/R(1-e^(1-tR/L)), so with V being constant, I believe it's an exponential rise.

read carefully what I wrote, also that in the brackets. Look up your textbook or wikipedia about inductors and capacitors. Capacitors are the inverse elements to inductors. Exchange I and V and you understand the other part. With a capacitor, charge it with a constant current and you get a linearly rising voltage --> with an inductor, put a constant voltage to it´and you get a linearly rising current (until........... see above)! Case closed.

@@KainkaLabs We are both correct in a sense. The current in an ideal inductor in isolation will rise linearly when charged with a constant voltage. However, ideal inductors don't actually exist. In that case there is always some resistance, and when resistance is present, the current in the inductor will rise exponentially as per the formula I provided. I hope we can agree on that.

Yes, it is basic electronics. I recommend Michel van Biezen's video "Electrical Engineering: Ch 7: Inductors (7 of 24) DC Current Through an Inductor" where he explains the exponential behavior of current through an inductor with constant voltage and takes into consideration the resistance with time constant L/R. Seems like you were unaware of that.

The spray and fluids shall wash away the contaminats, not "evaporate them", which is of course nonsense. Ultrasonic cleaning has it´s own dangers. It can destroy parts by vibration. And you have to desolder the part first of all and then take it out to get it into the US-cleaner. And you have to have at least a semiprofessional US-cleaner. So strays and fluids are in most cases the thing to go with first.

You will only in very rare circumstances find a replacement potentiometer that fits mechanically, has the same value and charateristic and the same quality. Look e..e. at the potentiometer at the bottom right. Where do want to search for this one and what are the chances you find the exact type?

I have no link. I found it easily on EBay.

This post is at the wrong video!

ruclips.net/video/02XtneCHnDA/видео.html

In theory with an adiitional potentiometer at the output of the square wave. 1...10 kOhm resistance value should work.

@@KainkaLabs Thank you for your reply. Based on your theory I implemented with a 5 kOhm potentiometer built-in in the kit and works perfect. For your reference I made this video: ruclips.net/video/UP1W4SsdEPI/видео.html Thank You.