⚠ God has said in the Quran: 🔵 { O mankind, worship your Lord, who created you and those before you, that you may become righteous - ( 2:21 ) 🔴 [He] who made for you the earth a bed [spread out] and the sky a ceiling and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [that there is nothing similar to Him]. ( 2:22 ) 🔵 And if you are in doubt about what We have sent down upon Our Servant [Muhammad], then produce a surah the like thereof and call upon your witnesses other than Allah, if you should be truthful. ( 2:23 ) 🔴 But if you do not - and you will never be able to - then fear the Fire, whose fuel is men and stones, prepared for the disbelievers.( 2:24 ) 🔵 And give good tidings to those who believe and do righteous deeds that they will have gardens [in Paradise] beneath which rivers flow. Whenever they are provided with a provision of fruit therefrom, they will say, "This is what we were provided with before." And it is given to them in likeness. And they will have therein purified spouses, and they will abide therein eternally. ( 2:25 ) ⚠ Quran
@@Ontoshka1 it must be compatible with variable capacitor it is physical equation. Or find it from old radio. That is reason why aren't informations about ferit antena and variable capacitor
11 місяців тому+265
Great video. I am an old engineer from the 50's and I like that youth love radios. Cheers from Patagonia Argentina
In 1957, in Los Angeles public school, we learned about the crystal radio and how to make one in Third Grade. That started my career in electronics as an Electronics Design Engineer.
That's amazing how a simple lesson in second grade sparked your career in electronics! It just goes to show the power of early education and how it can shape our future.
Way back in the mid 1960's I used a tiny am only "Transistor" radio. These were very cheap, used a single 9-volt battery. And had a single mono only ear bud. If you used the built-in speaker you killed the battery in just a few days. BUT if you just listen through that one little ear bud, the battery could last you over a month! Good times! Sleeping outdoors, under the stars! With my radio and an old pair of War Surplus binoculars. I'd sky watch all night long.
Very nice video. Not all that silly explaining of every component, but focus on the process of building. What the components do can be found in so many videos. Thanks for this exceptional focus!
Herthkit use to have one you put together.They gave you the plastic case resistors every thing.Me and my oldest son put one together and the learning experience alone on how to solder and tips towards learning?It was SO NEAT we put this little thing together and placed a batery in it and it worked a little AM radio.
Pls clean the soldering iron tip every time when making new joint. And bend the ends of the componemts pins to make more contact surface, like in SMD part. This will significantly increase the quality.
It's not a good idea to do this on a breadboard. While it's easier, breadboards create something called "parasitic capacitance" which messes up everything about this circuit. Because of that, you probably won't hear anything but noise if you build this on a breadboard. Try a veroboard (aka perfboard) which is easier than pcb but without the disadvantages of breadboard
Sélectivité épouvantable prévisible avec une amplification directe par un circuit intégré amplificateur entrée en émetteur suiveur "cathode follower "détection par "courbure de grille". Il y a 70 ans la réaction, la super reaction, le system reflex faisaient mieux.
The ferrite inductor actually used is certainly many times stronger than the little coil in the display image. With that little coil the tuning range would be perhaps in the vhf spectrum.
@@icarossavvides2641 This is somebody who somehow does not understand what I said. The display-image for the video does not match what is in the video. That air-core inductor definitely would not produce a resonance in the mediumwave range.
😊 Gracias por la explicación, sobre el circuito impreso...creo, falto una antenita periscopio, reciclada, conectada para reducir, ruido de fondo y tener más ganancia de sintonia y / o un filtro
In 1957, I put a one-transistor AM circuit (not nearly so many parts) inside a little match box and used the radiators in the university as ground. Mine was perhaps not the first transistor radio, but I bet it was the smallest. LOL
@@TechniCraftYT - Simpler than that. It -- as I remember now 66 years later -- had a couple of capacitors & resistors, one transistor and a tunable coil. That was it.
If he was that good at electronics, he would still holes into the circuit board and fit the components properly and teach genuine construction methods!
You are great human! Thank you for detailed s-b-s construction, you inspired me and I am sure many people who watched! Great job! Great author, thank you for educational and working practical video Sub ❤
how's the sensitivity gonna be with such a small LC? how's the performance of the IC? the only transistor radio i was able to build was a regenerative one which utilized a feedback loop, was running a 2n2222a and a soviet KT315G with rather large coils.
cz-7642 není polem řízený tranzistor ale integrovaný obvod s 10 tranzistory a funguje pouze při 1.5V a maximální kmitočet okolo středních vln(cca2 Mhz) u nás se již středovlnné a dlouhovlnné vysílače vypnuly takže to mám pouze jako dekoraci.Nyní používám regenerativní tranzistory při 1.5V na VKV.
You might be surprised to hear a signal or two on it, if you connect it to a long wire antenna, and use a good ground. There is NO WAY that it will receive signals from any distance...if you use it, with just the antenna coil shown.
Labelling the TA7642 as a JFET is completely misleading. That's an entire AM decoding circuit in a three terminal device, not a simple transistor. Also, good luck trying to find variable capacitors that are the right size these days. They are very hard to come across. To people watching this -- if you want to build an actual AM radio from a kit, I highly recommend the Elenco AM-550CK. You'll learn a lot more, and end up with a great AM radio for the AM broadcast band.
It is possible to use JFET as an AM detector. Such circuit is called "infinite impendance AM detector" but its layout is different than presented board.
Если ты называешь это хорошей пайкой, то ты реально ничего не знаешь. Человек многие ножки даже не прогрел. Так хлюпнул на нех припоя и типо держится. 1000% даю что если дотронуться к ним они отвалятся. При пайке ножка должна быть прогрета и припой должен быть со всех сторон.
This project remember me when I was a boy and I built an am radio with my father using only 3 components, a germanium diode, a variable capacitor and a coil, as well as the antenna which was a simple wire. Audio in headphones, no battery...it was very funny!
Radio waves have life! Radio waves have life! Machines are living too, working for me and you. From the transmitter to the receiver, across the ether, out of your speaker...
Bonjour monsieur votre démonstration ma intéressé . Je voulais vous demander une question si vous êtes disponible pour me répondre est ce que c'est vous même qui à fabriquer le plaquette où bien vous avez acheté ?
To make circuit board, simple way to apply resist for etching is to draw with Sharpie magic marker instead of using tape. Be sure board is clean first. Also, etching is quicker if ferric chloride is warm, not hot. Before etching, clean board with 400 grit sandpaper and then wash with alcohol. 73 DE KK5R
В1981 году на уроке труда, в 6 классе средней школы, нас учили собирать детекторные радио приемники, из чего он. Уже не помню, но он работал, без батареек. Слушать можно было только в наушниках. Учитель говорил, что такие радиоприёмники собирали партизаны во время ВОВ. Там ещё была эбонитовая палочка
Good video! But... ①TA7642 is an IC (integrated circuit). Please do not write TA7642 with symbols like FET. ②Because the method of writing 7 is unique, some people may mistake TA7642 for TA2642. ③Please tell them that resistors and capacitors have no polarity, so you don't need to worry about their direction.
Can I increase the Vin? I'm using headphones and i can't hear anything, increasing voltage my earphones starts to make noise but i can't listen to any radio station. I was wondering if problem could be Vin
@@inventorkr1 I have earphones but sound is too low. I increased Vin and now sound is better but there is a lot of noise. I can hear something tho. I was wondering if the voltage increase was to blame for the noise...
radio AM amplifier 👇👇
ua-cam.com/video/pMnwXL_bsCg/v-deo.html
⚠ God has said in the Quran:
🔵 { O mankind, worship your Lord, who created you and those before you, that you may become righteous - ( 2:21 )
🔴 [He] who made for you the earth a bed [spread out] and the sky a ceiling and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [that there is nothing similar to Him]. ( 2:22 )
🔵 And if you are in doubt about what We have sent down upon Our Servant [Muhammad], then produce a surah the like thereof and call upon your witnesses other than Allah, if you should be truthful. ( 2:23 )
🔴 But if you do not - and you will never be able to - then fear the Fire, whose fuel is men and stones, prepared for the disbelievers.( 2:24 )
🔵 And give good tidings to those who believe and do righteous deeds that they will have gardens [in Paradise] beneath which rivers flow. Whenever they are provided with a provision of fruit therefrom, they will say, "This is what we were provided with before." And it is given to them in likeness. And they will have therein purified spouses, and they will abide therein eternally. ( 2:25 )
⚠ Quran
Tenes que estudiar electronica
How to wind the antenna, approximately how many turns?
@@Ontoshka1 it must be compatible with variable capacitor it is physical equation. Or find it from old radio.
That is reason why aren't informations about ferit antena and variable capacitor
Great video. I am an old engineer from the 50's and I like that youth love radios. Cheers from Patagonia Argentina
Saludos de otro argentino, de la otra punta del continente!
@@XB10001 de Brasil 🇧🇷
@@diegocruz1136 👍
De Brasil 🇧🇷
Tengo 17 y escucho la radio,me encanta ya que tiene un no se que y es hermoso pasar una tarde escuchando radio.
In 1957, in Los Angeles public school, we learned about the crystal radio and how to make one in Third Grade.
That started my career in electronics as an Electronics Design Engineer.
That's amazing how a simple lesson in second grade sparked your career in electronics! It just goes to show the power of early education and how it can shape our future.
Yes it ruined my life too... :)
I was born in 2000, I never had anything like that in my schooling. Really wish I did.
so nice that you entered this beautiful world of electronics so early in School!
@@kaelandin luckily, you have youtube and the entire internet.
Wow! I learned two things from watching your video for only a minute. A new way to use SMT components.
thanks for your comment
😂
Way back in the mid 1960's I used a tiny am only "Transistor" radio. These were very cheap, used a single 9-volt battery. And had a single mono only ear bud.
If you used the built-in speaker you killed the battery in just a few days. BUT if you just listen through that one little ear bud, the battery could last you over a month!
Good times! Sleeping outdoors, under the stars! With my radio and an old pair of War Surplus binoculars. I'd sky watch all night long.
Very nice video. Not all that silly explaining of every component, but focus on the process of building. What the components do can be found in so many videos. Thanks for this exceptional focus!
As an 11 year old in 1969 I built a radio very similar to this and kicked off my career in electronics.
Muy buen video, yo una ves hice una radio así y funcionó exelente...tu vídeo está muy bien explicado...saludos!!
Excelente video. El punto crucial del circuito, es el capacitor variable y la numeración de sus pines. Ya casi, no los están fabricando.
I like your technique of just directly copying the schematic as traces and using through hole components as surface mount. Great for simple circuits.
This is exactly what I've been looking for. Thanks 🙏🏿
Herthkit use to have one you put together.They gave you the plastic case resistors every thing.Me and my oldest son put one together and the learning experience alone on how to solder and tips towards learning?It was SO NEAT we put this little thing together and placed a batery in it and it worked a little AM radio.
The world is a worse place without Heathkit.
Me and the boys listening to military frequencies with this one!!!! 🗣️🗣️🗣️🗣️🗣️🗣️🔥🔥🔥🔥🔥🔥
Where is the national
😂😂😂😂😈
I took "Electricity" in high school,,only thing i remember is a buddy putting a capacitor in the wall outlet and saying Run!!
Pls clean the soldering iron tip every time when making new joint. And bend the ends of the componemts pins to make more contact surface, like in SMD part.
This will significantly increase the quality.
Thanks for adding this tip
Agreed!
@@inventorkr1where can I get the Board you used in the Video ?
@HardLight77 it's useless lol
You made it very easy to follow what needed to be done by referring to the index card.
When will you decide to maintain your soldering iron? Usually, a damp sponge is more than enough.
A better video would explain the function of each component as it applies to the AM radio
He knows nothing
Он не понимает вообще он 0
I built this but the only thing I heard was the load snoring of my neighbor.
Значит был неучем в школе и спаял все по женскому половому органу🤷♂️
Precisely. I ordered 10 pcs of TA7642 from Ali Express and they came out to be all fake.
😂
LOL 🤣😂
dang u reserveed a sleep monitor 😂❤
I have seen so many people making boards, but this is the best. I wish you could do the project on a breadboard. Thanks a lot. Nice video
It's not a good idea to do this on a breadboard. While it's easier, breadboards create something called "parasitic capacitance" which messes up everything about this circuit. Because of that, you probably won't hear anything but noise if you build this on a breadboard. Try a veroboard (aka perfboard) which is easier than pcb but without the disadvantages of breadboard
Excellent video! 👍
Ха,ха,ха я в детстве 45 лет назад такие конструкции паял. Но тогда в эфире было очень много радиостанций
Sélectivité épouvantable prévisible avec une amplification directe par un circuit intégré amplificateur entrée en émetteur suiveur "cathode follower "détection par "courbure de grille".
Il y a 70 ans la réaction, la super reaction, le system reflex faisaient mieux.
I remember years ago we had to build a crystal radio for a merit badge in Boy Scouts.. Pretty neat stuff back in the day.
Crystal radios for Boy Scouts? Talk about old-school tech training! Bet you could pick up some interesting signals with those.
The ferrite inductor actually used is certainly many times stronger than the little coil in the display image. With that little coil the tuning range would be perhaps in the vhf spectrum.
Wrong. What do you mean "display image" if you care to look at the data sheet, the ferrite aerial concurs with the datasheet guidance.
@@icarossavvides2641 This is somebody who somehow does not understand what I said.
The display-image for the video does not match what is in the video. That air-core inductor definitely would not produce a resonance in the mediumwave range.
💯
这个视频带给大家的只是怀念，尤其是年纪大的无线电爱好者
😊 Gracias por la explicación, sobre el circuito impreso...creo, falto una antenita periscopio, reciclada, conectada para reducir, ruido de fondo y tener más ganancia de sintonia y / o un filtro
I love radios , thank you very much.
In 1957, I put a one-transistor AM circuit (not nearly so many parts) inside a little match box and used the radiators in the university as ground. Mine was perhaps not the first transistor radio, but I bet it was the smallest. LOL
Was it an regen receiver
@@TechniCraftYT - Simpler than that. It -- as I remember now 66 years later -- had a couple of capacitors & resistors, one transistor and a tunable coil. That was it.
@@fredrichenning1367 so you just had an crystal radio with an transistor amp.
Hello good friend, you have a good idea. you are very good at electronics, your video is very good, thank you for sharing ❤❤❤
If he was that good at electronics, he would still holes into the circuit board and fit the components properly and teach genuine construction methods!
Всё бы хорошо на А М сейчас не работает только фм , жалко диапазон 😥
I remember building one of those crystal sets back in the 60's.
Coolest thing at the time.😁
Literally extracting sound from thin air with no power source? Definitely still cool!
You are great human! Thank you for detailed s-b-s construction, you inspired me and I am sure many people who watched! Great job! Great author, thank you for educational and working practical video
Sub ❤
thank you
Great🙂 Very simple. Thanks
Meu sonho é um ferro de solda mágico, desses dos vídeos do UA-cam, que soldam componentes em um segundo!
O meu tbm 😅
That's called experience!!!!
Com experiência e uma estação de solda nums 350 graus você consegue 👍
Sofri igual um condenado aprendendo sozinho até descobrir a pasta de solda. N conseguia nem soldar um fio no alto falante kkkkk
This must be everyone's first electonics project.
How I miss when Inhad time for this! 😪
I hope you really enjoyed watching the video
Lets do it this time
@@inventorkr1 very much!
4:00 that quick PCB prototyping method looks incredibly useful
how's the sensitivity gonna be with such a small LC? how's the performance of the IC? the only transistor radio i was able to build was a regenerative one which utilized a feedback loop, was running a 2n2222a and a soviet KT315G with rather large coils.
cz-7642 není polem řízený tranzistor ale integrovaný obvod s 10 tranzistory a funguje pouze při 1.5V a maximální kmitočet okolo středních vln(cca2 Mhz) u nás se již středovlnné a dlouhovlnné vysílače vypnuly takže to mám pouze jako dekoraci.Nyní používám regenerativní tranzistory při 1.5V na VKV.
You might be surprised to hear a signal or two on it, if you connect it to a long wire antenna, and use a good ground. There is NO WAY that it will receive signals from any distance...if you use it, with just the antenna coil shown.
Made a radio as a kid. Used a metal swingset as an antenna.
Bons tempos, montei muitos rádios, inclusive FM! Época bacana, década de 80/90.
Labelling the TA7642 as a JFET is completely misleading. That's an entire AM decoding circuit in a three terminal device, not a simple transistor. Also, good luck trying to find variable capacitors that are the right size these days. They are very hard to come across.
To people watching this -- if you want to build an actual AM radio from a kit, I highly recommend the Elenco AM-550CK. You'll learn a lot more, and end up with a great AM radio for the AM broadcast band.
Although the symbol might not be perfect, to be fair he did label the part @ 4:00.
Also, the AM band isn't always the same everywhere so I am assuming the tuning is designed for the frequencies he wanted to receive.
@@jimharris9394 That has nothing to do with what I said
It is possible to use JFET as an AM detector. Such circuit is called "infinite impendance AM detector" but its layout is different than presented board.
@@JanKowalski-vj9py Right, but the part listed is NOT a JFET. It's an entire AM demodulation IC in a TO-92 package.
Thanks from India
Que bueno 😮 saludos desde Bolivia
Паяю и ремонтирую с 60х. Но ваше видео, супер
Ещё одного выпустили из дома вечного двигателя.
Если ты называешь это хорошей пайкой, то ты реально ничего не знаешь. Человек многие ножки даже не прогрел. Так хлюпнул на нех припоя и типо держится. 1000% даю что если дотронуться к ним они отвалятся. При пайке ножка должна быть прогрета и припой должен быть со всех сторон.
@@sergbo3114паять без флюса - зверство над выводами радиодеталей...
Очень поучительно... Спасибо.. Ребятишкам очень интересно будет... ❤❤
Сейчас ребятишкам конабис интересен и его производные.
@@ВасилийТеплов-л7е а ты по себе не сравнивай
This project remember me when I was a boy and I built an am radio with my father using only 3 components, a germanium diode, a variable capacitor and a coil, as well as the antenna which was a simple wire.
Audio in headphones, no battery...it was very funny!
That radio can help me in Silent Hill, thanks!
Jokes besides, great job!
Radio waves have life! Radio waves have life! Machines are living too, working for me and you. From the transmitter to the receiver, across the ether, out of your speaker...
Our God of the Bible who created everything, put life in everything. Atoms themselves have life.
God bless you ☦️ ❤
Machines are people too 👌
Zbytečně složitá konstrukce.
Nice sharing ❤❤
In Romania these kind of radios were made in diy, and at the countryside were popular...with a big antena, foreign broadcast receive was possible.
Nice video ❤
En los radios AM la recepción se mejora moviendo la horientación de la bobina. Excelente buen proyecto.
In the O days, I use ZN414 IC to build a 1.5V cell portable AM radio. Even before the invention of SONY Walkman.
Indeed, ZN414 chip, I made an AM radio in a match box with ZN414. I used a 1.5V button cell.
Interesting. Nice project.
That looks like a high quality Radio Shack radio.
How to determine frequency or incorporate adjustment to build other receivers in other Hertz ranges?
Change the value of the variable capacitor and the value of the coil
Bonjour monsieur votre démonstration ma intéressé . Je voulais vous demander une question si vous êtes disponible pour me répondre est ce que c'est vous même qui à fabriquer le plaquette où bien vous avez acheté ?
Je ne comprends pas exactement ce que tu veux dire, peux-tu expliquer ?
amazing ❤❤sharing 💗💗
Parabéns ficou muito legal, infelizmente a transmissão AM sofre muito interferência. Nesse seu projeto é possível adaptar uma antena?
A receção de rádio a meio da noite é clara
@@inventorkr1 É verdade a meia noite a recepção de rádio é mais fácil de capturar as estações.
Very nice👍👍👍
😂 great 😃👍😂
I have problem designing the ferrite core with those threads. What is the name of the thread and how can I get one ?
Use copper wire
@@inventorkr1
Thank you bro
How many turns and the wire size ?
@@AugustineAriola 22 gauge wire, and about 70 turns.
Better to use Litz wire if you can.
@@AureliusR
Really ? Can I get that ?
To make circuit board, simple way to apply resist for etching is to draw with Sharpie magic marker instead of using tape. Be sure board is clean first. Also, etching is quicker if ferric chloride is warm, not hot.
Before etching, clean board with 400 grit sandpaper and then wash with alcohol.
73 DE KK5R
В1981 году на уроке труда, в 6 классе средней школы, нас учили собирать детекторные радио приемники, из чего он. Уже не помню, но он работал, без батареек. Слушать можно было только в наушниках. Учитель говорил, что такие радиоприёмники собирали партизаны во время ВОВ. Там ещё была эбонитовая палочка
Hi, good job, I hope you are well, I wanted to know if the circuit can be used with a voltage higher than 1.5v
Thanks!
3V
OMG. When I first looked at this, I thought that it was made from a mousetrap! Nice little project for someone.
Me gusto el video hacer uno mismo un radio
Nice bro 🎉
Is it okay not to use ferrite rod for inductor?
Yes high frequencies , the crystal radios just use the crystal with antenna and ground rod
@@pauljanssen7594 Cz-Max do 2 Mhz.
You can use an air core coil, but it will take a lot more turns, to equal the one with the ferrite core....if you want the same frequency coverage.
Awesome you just reminded me i have to go get some peroxide
This was pretty cool!
IQ level matrix 🕶️👑
Ничего неуслышиш АМ сейчас отключен только шшшшшшип и усё😥
Why is there a capacitor t the output to ground.why is it connected to collector?
😊 Where do I get a variable capacitor like that? Not in description or on Amazon.
From Ali Express
gozbx.com/r/Be82f6Sg4UOR
Nice well done
Podrías hacer una explicación del circuito, como funciona, por qué de los valores de los componentes, etc.
Make sure you have a proper antenna outside, some are 100 feet long. Good luck getting any overseas radio stations.
That is a TRF integrated circuit that looks like a transitor.
Great video thanks 😊
Great video! want to ask where we know the path of the pcb that we will make, then the components needed to become an AM radio circuit?
Could we do this without batteries?
😅😅😅😅😅😅well information good show 😅😅
Good video! But...
①TA7642 is an IC (integrated circuit). Please do not write TA7642 with symbols like FET.
②Because the method of writing 7 is unique, some people may mistake TA7642 for TA2642.
③Please tell them that resistors and capacitors have no polarity, so you don't need to worry about their direction.
Thanks for your comment, I appreciate your advice
Lots of comments praising this post, but how many people have built this radio? And how well did it work?
Thank you 😅❤❤❤❤❤❤❤
ich begann auch mit detektoren. Funktioniert leider nur für AM und schon gar nicht für DAB
awesome.😊
Dulu waktu sekolah praktek sendiri .hasil nya bagus ..jadi teringat
Super emozionante
AM for po go oc receiver ?
70年前、ゲルマニュームラジオが流行りました・・思い出す
Nice video ❤❤❤❤❤
I bet most of that noise was maybe digital transmissions of some kind? Kind of like how computer modems talked to the internet. Really cool!
Can I increase the Vin? I'm using headphones and i can't hear anything, increasing voltage my earphones starts to make noise but i can't listen to any radio station. I was wondering if problem could be Vin
You need headphones with high impedance
@@inventorkr1 I have earphones but sound is too low. I increased Vin and now sound is better but there is a lot of noise. I can hear something tho. I was wondering if the voltage increase was to blame for the noise...
Nice fabrication technique
Hi very cool project where i can find the schematic??🙂 and do i need absolutely polyester capacitors?
As long as the capacitance is the same and can take the same current it doesn’t matter
@@Ruktiet Thanks a lot!!happy holydays!
I selute whole sciencetist who Invented all doscover for us humanity
Nossa que top parabéns gostei muito
POSSO EXIBIR ESSE VIDEO NA MINHA PAGINA NO FACEBOOK ?
I've built these kind of radio during my younger days but I need a long wire antenna to receive some signals ..
U nas v byvalom Československu som to poskladal už ako 10 ročný pred 50 rokmi. 😅
Qreat video. One may-be stupid question: In the video you use LC circut of 433uH and 160pF. This set up will resonate with 19KHz signal. Correct?
No, putting the values into an LC tank calculator gives roughly 604KHz which is towards the bottom of the MW band