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- Видео 351
- Просмотров 177 585
Bigbrother
Добавлен 20 мар 2017
Welcome you to my channel.
In my lab, I will introduce you to various electrical and electronic experiments.
If I have the time, it will be an opportunity to introduce you to the everyday scenes of Busan, Korea, and Korean traditions.
In my lab, I will introduce you to various electrical and electronic experiments.
If I have the time, it will be an opportunity to introduce you to the everyday scenes of Busan, Korea, and Korean traditions.
Repairing broken glasses case
The glasses case is made of plastic, so the old hinges break.
To replace this, a new solution was found as a result of several failed attempts and experiences.
Of course, you can get this again at an optical store. However, what was already broken was repaired while saving the Earth's environment.
This turned out to be a pretty great piece.
To replace this, a new solution was found as a result of several failed attempts and experiences.
Of course, you can get this again at an optical store. However, what was already broken was repaired while saving the Earth's environment.
This turned out to be a pretty great piece.
Просмотров: 25
Видео
Vintage SONY RADIO TR-847 Review
Просмотров 50Месяц назад
A gift I received from an acquaintance in the radio club. Out of curiosity, I wondered if this old shortwave radio produced in 1964 would actually work. I carefully checked the battery cover, but I did not have a large battery. It has a slightly larger capacity than a regular battery and is therefore more expensive. Instead, I ran the radio with a DC power supply. Especially for this type of ra...
DIY practical smartphone wireless charger repair and modification
Просмотров 84Месяц назад
Symptom: Power does not turn on. Even if you check the power first, you cannot confirm that the power is turned on. Inspection order 1. Connector circuit and power circuit tracing 2. Check whether power is supplied to the IC power terminal by referring to the IC datasheet. 3. Trace the bypass capacitor connection point of the IC pin. 4. After repairing the smartphone wireless charger, separate ...
DIY a vernier caliper protective cover
Просмотров 68Месяц назад
I attempted to make a vernier caliper protective cover using a vintage sewing machine. Using the prepared fabric, draw it with chalk and then cut it to size with scissors. I glued it using a sewing machine and attached Velcro.
BJT single amplifer failure simulation by LT SPICE
Просмотров 352 месяца назад
Predictable failure simulations of transistor amplifiers were performed using various methods using the LT SPICE tool. It simulated the voltage and output waveform of each part when various failures such as open and short circuits of the bias resistor and transistor terminal occurred.
Analysis of vintage shortwave radio Panasonic R-205HB
Просмотров 442 месяца назад
A long time ago, I found a broken germanium shortwave radio that was popular in the 1960s at a flea market. At that time, broken things could not be repaired. The PCB inside was broken, and luckily, I patched the broken PCB with a cloth on a sewing machine. I wired up the broken PCB and glued it together with super glue. Radio's performance is still excellent. Medium and short waves are receive...
DIY a radio wallet using a sewing machine
Просмотров 2023 месяца назад
The most important thing is to draw the radio wallet development diagram using PCCAD software. Just print it out, glue it on fabric, and cut it. Then, just use a sewing machine to sew along the line. It was an amateurish attempt at a fun first piece.
Portable butane gas igniter fun application experiment
Просмотров 683 месяца назад
This is a variation of the basic blocking oscillation. We tried some interesting experiments. It runs on a 1.5V battery, but the voltage rises and you feel a thrill when you touch it. 1, Induction experiment, 2. Neon tube lighting experiment, 3, Spark plug discharge experiment for passenger cars
How to clean oxidized vintage air varicon for RF wireless device
Просмотров 583 месяца назад
It appears that theair varicon has been oxidized. Wash this and put air varicon inside an empty can. I added 1 teaspoon of baking powder and heated it for about 5 minutes to remove the oxide.
How to determine the circuit component constants of a BJT amplifier
Просмотров 2393 месяца назад
When designing an amplifier using transistors The circuit component constants must be calculated to achieve optimal design. Most transistor design focuses on circuit analysis. What is really needed is to determine the constants of the circuit. After a long period of research, I found the answer. It refers to the absolute parameters and electrical characteristics of the transistor. Microsoft's s...
BJT Colpitts oscillator design, simulation and circuit implementation
Просмотров 773 месяца назад
An amplifier circuit was designed with a single BJT using 2SC1815, and the feedback circuit was implemented as an RC tank circuit. We will simulate with LT Spice, calculate the frequency with Excel, a spreadsheet in MS Office, implement the circuit with a breadboard, and show the experiment records. You can download design data and simulation files by clicking below. cafe.daum.net/8051users/LmL...
Business trip from Busan to Jeju Island, South Korea
Просмотров 644 месяца назад
It’s been a while since I visited Jeju Island. I transferred between buses and light rail and arrived at Gimhae International Airport in Busan. I got on a plane again and flew to Jeju Island. When I arrived at Ramada Plaza, I took pictures of the beach scenery from the balcony.
Troubleshooting of vintage car steering wheel steering angle display device
Просмотров 934 месяца назад
I have a vintage steering wheel angle indicator. This is at least 20 years old. This was broken and no longer working We had to carefully disassemble and repair it while also understanding the principles. This is a device that has a weight with an inclination angle of about 30 degrees and displays the rotation angle when it rotates. It is very useful for new drivers and allows them to align the...
How to register LT spice model library
Просмотров 444 месяца назад
To simulate new parts not in the library Simulation is possible only by finding and registering a new component library. There is a special Windows command, %appData%, that is used at this time. %appData% Enter “%appData%” in the search box on the left. 1. Find the Local folder. 2. Find and open the LT spice folder. 3. Find and open the lib folder. 4. Find and open the cmp folder. 5. Open the Q...
BJT CE amplifier input/output simulation by LT spice
Просмотров 504 месяца назад
I attempted to simulate the input and output of a single transistor 2SC1815 amplifier. It shows the output result for a sine wave of 1KHz and 1mV as the input signal of the amplifier. The simulation file can be downloaded by clicking the link. cafe.daum.net/8051users/LmLc/26
BJT CE amplifier frequency response simulation by LT spice
Просмотров 784 месяца назад
BJT CE amplifier frequency response simulation by LT spice
Colpitts oscillator circuit design and simulation by LT spice
Просмотров 1234 месяца назад
Colpitts oscillator circuit design and simulation by LT spice
RETEKESS V115, digital radio, automatic station selection and registration method
Просмотров 1045 месяцев назад
RETEKESS V115, digital radio, automatic station selection and registration method
RF-H535 digital radio troubleshooting
Просмотров 415 месяцев назад
RF-H535 digital radio troubleshooting
Antenna tuning and local oscillation coil decomposition in the HF band (for educational)
Просмотров 445 месяцев назад
Antenna tuning and local oscillation coil decomposition in the HF band (for educational)
Twin-t oscillator design with OP-AMP (for educational )
Просмотров 2375 месяцев назад
Twin-t oscillator design with OP-AMP (for educational )
New Year’s Kjungari Samulnori in Bupyeong Market, Busan, Republic of Korea
Просмотров 495 месяцев назад
New Year’s Kjungari Samulnori in Bupyeong Market, Busan, Republic of Korea
Making a table using a car steering wheel
Просмотров 425 месяцев назад
Making a table using a car steering wheel
Extension probe for DIY oscilloscopes
Просмотров 786 месяцев назад
Extension probe for DIY oscilloscopes
Measuring superheterodyne AM radio signals (for educational)
Просмотров 386 месяцев назад
Measuring superheterodyne AM radio signals (for educational)
Various uses of speed controllers for large vacuum cleaners
Просмотров 1267 месяцев назад
Various uses of speed controllers for large vacuum cleaners
How to track integrated circuit (IC) failures
Просмотров 2477 месяцев назад
How to track integrated circuit (IC) failures
محتاج شراء واحدة شكر لك
라디오는 mbc였는데
why not 455khz
This signal is for testing a single transistor.
@@bigbrother1059 okay thanks
Thanks for you ❤
Thank you for visiting my channel
An example of why it's good to have an analog meter.
Thank you for visiting my channel. Please mention any questions or topics you are interested in.
Just bought one off eBay and it sounds pretty good.
Oh and the one I got is not the National version and the Panasonic version.
Diy what work this rice cookur
Welcome to my channel. Things like coffee pots have a thermal fuse inside them to prevent the temperature from getting too high. This is very cleverly hidden. If you have some knowledge of electricity and know how to use a circuit tester (continuity tester), you can easily find it.
The dynamo is getting stock. What should i do?
That's what happens when your car battery is discharged.
Carefully open the trunk cover and use a screwdriver to unlock it.
But my battery is good. Maybe the tail gate switch is broken?
Sorry. That looks terrible.
Welcome to my channel.This was an amateurish attempt. But now the skills have improved a lot. Please look forward to the next one.
Fist radio l own good .
Welcome to my channel. This radio holds your memories too.
wonderful 👍
gggg
Nice sine and osciloscope to
Thank you for visiting my channel. The 1khz sine wave is often used for audio testing.
@@bigbrother1059 you welcome what is the best topology to generate an almost perfect sine, i have found twin T opamp and colpitts for now
Thank you and appreciate your effort. Greetings to you from Turkey .
Welcome to my channel. If you mention a topic you're interested in, I'll research it.
And what signal were you injecting
It is injecting a pulsed 1khz signal.
프로그램 대단하십니다.
항상 응원하여 주셔서 감사드립니다.
프로그램 관심 있습니다 시간날때 한번 지도바랍니다 대단하십니다 굿럭
물론 입니다. 감사합니다.
Thanks 🙏
wonderful trip.😄
When you come to Korea, you too can enjoy Korea's natural scenery.
After filming it, I think it tells a story. In the final scene, the roar of an airplane disappears in the dark sky and a woman walks her dog and quickly runs away.
When I go next to the boiler room, the smell of burning oil makes my nose hurt.Because the smell of burning oil is very bad for our body's lungs and breathing, it is recommended to wear a mask when riding an airplane.
What's the name of the app
Skywave Schedules.Thank you for visiting my channel.The initial version was free, but the current version is paid.
Thanks 🙏
BJT library has been added. You can download it by clicking the link. This will help you understand LT spice.
Thanks 🙏
Thank you for visiting my channel. I hope this will be helpful in designing Colpitts oscillator circuits.
Firstly, I'll thank you for your great devices. I want to ask how I'll unlock the PLC password? there's password in the PLC I can't work on it, thank you in advance.
Thank you for visiting my channel. It has an internal backup battery in a small pocket on the top. Wouldn't it be possible to disconnect the connector for a moment and reconnect it?
감사합니다.
A very helpful video for those of us who tinker with radios. Thank you.
로맨틱하며 안전하니 최고입니다!
이명호님 감사합니다.첫째 사진은 최종버젼인데 영상 올리고나서 수정하여 올린 것 입니다.
Kua sna po may audible explanation po kau s kung ano ang ginagwa nyo,,,nahirapan po unawain ng kagaya q n gustong matuto😅
Is the app still available on the Play store? Could not find it.
Good~
This is helpful to see. WHat model of switch did you get? thank you for any information. I have a brother vx-808 and the plastic assembly threaded section has snapped.
Boss Anu po tawag sa bilog na tenesteran nyo po
Salamat sa pagbisita sa akong channel. Gikuha nako ang akong ngalan gikan sa trabaho ni George Orwell 1984. Interesado ako sa mga hilisgutan sa electrical ug electronic circuit. Palihug ipahibalo kanamo ang bahin sa usa ka hilisgutan nga interesado ka ug kami mag-research niini.
Thanks for the video. Why my tailgate , sometimes it opens and other times it doesn't. Kia picanto..
**More accurately - this is streaming audio, not receiving signals. It's just an app that connects to web-based SDR receivers, same as using a website like webSDR or KIWI. It's not receiving signals (which would require a radio).
No chit Sherlock
❗ 'promo sm'
Thank you for visiting my channel.
I use a similar app called pocket rxtx, does basically the same thing but is easier to use because it has the feel of operating an actual radio albeit the knobs are virtual. I love it though.
안녕하세요 혹시 전기회로도 해석을 알 수 있을까요??
저의 채널에 오신것을 환영합니다. 워낙 많이 알려진 회로로 데이타 시트 참고하시면 도움이 될 것 이라고 생각합니다.
Good to know..thanks.
Thanks a lot Sir
Thank you for visiting my channel.
Hello, can you help me? My rice cooker, when I press the button, the red light comes on, but it doesn't stay red, it switches to green! If I forcefully hold it, it gets hot at the connector
Not working i installed this app from playstore. Please send me this app link thank you
Thank you for visiting my channel. In response to your request, I have just downloaded it. Unfortunately, although it was free in the past, it has now become a paid site.
Ola meu amigo, voce poderia me ajudar com este aparelho, pois nao achei outro video ensinando usar .
is it still ok to use even if it is wet inside? because I put ice inside, and this is the reason why it looks wet
good job
Great video Sir. Sir,please tell me,this app use for the mobile conversation calls listening?
Thanks for visiting my channel. You are a very good idea. Mobile frequency band and shortwave radio frequency band are different. Also, mobile is digital communication, and shortwave radio is analog communication. It's called phone wiretapping and it's legally prohibited. Of course you need a separate decode to try that out intentionally. I need some research to see if the method you said can be solved. Thanks for your interest in my channel.
Thanks for the reply
전자 역사
멋있어요...
Hindi redio app batao
영상 중 수룡항 포구를 보니 '智慧(지혜)로운 사람은 물을 좋아하고, 어진 사람은 산을 좋아한다. '는 知者樂水 仁者樂山(지자요수 인자요산)이라는 의미를 떠올리며 달랑 낚시대 하나 들고 홀로 바다를 바라보던 추억이 떠오르네요!...