Nn mm

réponds vous pouvez passez à autres choses SVP en électroniques !

Thank you.

the first diagram, the base hangs in the air. I would like to ask the author how to calculate the period of LED glow. Where is the closed electrical circuit in which the base terminal of each transistor is connected?

@@user-yr6wm9fo5r je réponds il ne veux pas vous répondre il est mauvais !

Hello my dear friend . No top 10 video shows the final result at the beginning of the video. The circuit diagram is also available in most of the videos, if you pay attention

You are correct. Your comments will be used to improve the channel

Impressive ideas, simple but very technical,l congratulate You.

For what?

Thank you for expressing your opinion . This circuit is used to light a fire or coal, not for security .

🙏 بسیار بسیار ممنونم دوست عزیز بخاطر حمایتتون از من و کانال

سپاس🙏

Do you mean video number two?

thanks bro

This training is holistic. Changes and tricks are with the viewer

OK . YES

Diagrams that are missing or wrong in some videos ; Their link was added in the description of the video

what GBU ????🤔

Which project was most interesting to you?

My friend, I don't understand what you mean

HE TINS THE LEADS FIRST THEN HEATS THE SOLDER RATHER POOR METHOD

Thanks bro🌼

1st "project" is 4 Esaki oscillators. The transistor is reversed biased

I am glad to meet you dear colleague. Welcome to this channel I also have a second channel and I will be very happy if you take a look there I am more active in my second channel www.youtube.com/@Simple.E.P/

Watch the short videos of the channel, it will probably be useful to you

You deserve the best Soon you will see the best on this channel

Have you observed inappropriate behavior?

For circuit maps that are not shown in the video, please refer to the description section of this video

Yes, it is possible. You should use numbers 4 and 7 No. 4, you must remove the LED and give its positive and negative pole to the power input of project No. 7. This is easy and will work for you

I will give you the download link as soon as possible

The circuit diagram download link was added in the description of the relevant video ukposts.info/have/v-deo/j2RkpmeoZ6mHrn0.html

There are no european or american models, the 2n2222 is completely different from the bc547, but you can can use basically any npn transistor for these circuits.

You are right that they are not the exact same part. I should have used the words “good substitute” My point is that the designation “BC” is the European standard and “2N” designation is from the US standard : Joint Electron Device Engineering Council (JEDEC) The JEDEC part numbering scheme evolved in the 1960s in the United States. The JEDEC EIA-370 transistor device numbers usually start with 2N, indicating a three-terminal device. Dual-gate field-effect transistors are four-terminal devices, and begin with 3N. The prefix is followed by a two-, three- or four-digit number with no significance as to device properties, although early devices with low numbers tend to be germanium devices. For example, 2N3055 is a silicon n-p-n power transistor, 2N1301 is a p-n-p germanium switching transistor. A letter suffix, such as "A", is sometimes used to indicate a newer variant, but rarely gain groupings. JEDEC prefix table Prefix Type and usage 1N two-terminal device, such as diodes 2N three-terminal device, such as transistors or single-gate field-effect transistors 3N four-terminal device, such as dual-gate field-effect transistors. European Electronic Component Manufacturers Association (EECA) The European Electronic Component Manufacturers Association (EECA) uses a numbering scheme that was inherited from Pro Electron when it merged with EECA in 1983. This scheme begins with two letters: the first gives the semiconductor type (A for germanium, B for silicon, and C for materials like GaAs); the second letter denotes the intended use (A for diode, C for general-purpose transistor, etc.). A three-digit sequence number (or one letter and two digits, for industrial types) follows. With early devices this indicated the case type. Suffixes may be used, with a letter (e.g. "C" often means high hFE, such as in: BC549C[97]) or other codes may follow to show gain (e.g. BC327-25) or voltage rating (e.g. BUK854-800A[98]).

TOP

2n3904 is a better sub though has moderate gain BC547 does have very gain which can be critical the 2n2222 has relatively low gain

Is this circuit useful for you?? ukposts.info/have/v-deo/oIpzqqFrgHiblpc.html

SOUNDS TOTALLY POINTLESS

Circuit maps are either in the videos or in the video description

Yes, dear friend, the battery is made of china and is not original

thanks bro

1st "project" is 4 Esaki oscillators. The transistor is reversed biased.

In this case thetransistor is only used to switch the led and the current is limited by a resistor, therefore tjis curcuit is safe, if the led would actually receive 100mA it would be instantly dead.

@@indian.techsupport Не правда, судя по вашей схеме, у Вас один резистор является резистором базы, а второй подтягивает Базу на землю через геркон, тем самым закрывая его. Каким из этих резисторов вы ограничиваете ток коллектор-эмиттер? ))) Резистора в цепи коллектора у вас там нет. Следовательно всё гасится на транзисторе. И светодиод может выдержать ток в 100мА но очень не долго.

I think the first project, unconnected base, is referred to as the reverse avalanche effect and only a minority of transistors will exhibit the effect and, as you say, it's undependable. Also, it usually only works at about 18-24 volts supply. I really liked the last project: it would be possible to build a chaser light display with that one. I thought the only circuit that would do this was using a 4017. The chaser would only work with three stages, works well on my solder less breadboard and has possibilities. Great upload, thank you to this uploader! 🙂

I do not understand

thanks bro

This is a great honor for me

You are right

thanks bro

These were the first videos that I recorded while creating the channel, and I must say that I was inspired I had to use these videos for a long monetization video. Because of family financial problems Now that the channel has reached monetization, I definitely have amazing videos to make for you. I posted the good videos after monetization

Do I know you ?

Does the 75-year-old man have a problem that makes you laugh? Your laughter is inappropriate

Dear friend, I appreciate your opinion 🤨

this is great

It only needs a little soldering oil

TOTALLY.....JUST COPIES CRAP WITHOUT ANY UNDERSTANDING

You should take a look at the BC546 data sheet... The only difference is that the volts go up to 65 instead of 30 (548) or 45 (547). Does the term shooting sparrows with cannons mean anything to you? Of course it doesn't matter whether you use the 6, 7 or 8 for small (up to) 12V applications. It's all the same from the point of view. It's not without reason that they're summarized in one data sheet...

1st "project" is 4 Esaki oscillators. The transistor is reversed biased.

No one else agrees with you, dear friend

what bro ???