The engineers of Westinghouse in the 1960s or 1970's did a very intelligent job, by making this AM superhet with only 5 transistors. And using that 3rth transistor both to detect the AM signal + as a driver for the complementary end-stage, via that transformer. This was and is top (!). And many thanks for explaining this! No assault for Sony: but compare it to the Sony circuits of the 1980's & 1990's where they used 6 transistors in cases where only 3 (or even 2) could do the job...Compared to the Philips circuits where 2 or 3 did the job... Though Philips lost the EU market in the 1980's... Anyway: a good explanation of this beautiful Westinghouse radio circuit. Thanks Richard! 7 Sept. 2024.
Thanks Ko! Yes this is a very interest circuit for a transistor radio. I had to stare at this for a while. George Westinghouse started his company in 1886 and they are here today. Westinghouse goes back to the beginning of radio. Westinghouse made the first radios for RCA.
Спасибо за Ваши видео! Вы говорите неспешно и внятно. Это позволяет мне совершенствовать мой английский на слух. Мне 64 года, я радиоинженер, и это помогает мне правильно понимать Ваши объяснения и замечать, где я ошибся в восприятии английской речи. Желаю Вам здоровья, сил и долгой жизни! Игорь, Подольск, Россия.
Thank you! I wish you well and a long life also! I hope my videos help. I enjoy making the videos and trying to answer questions. Thanks again Игорь, Подольск, Россия.
Do you have any particular radio in mind? Thank you! I have another video you may like. Superheterodyne AA5 from End to End ruclips.net/video/glakoNN4lwA/видео.html
Yes I bought my first transistor when I was in High School. It was a CK722 Germanium PNP. I thought it was amazing then and it is still amazing now. Thanks Ryan!!!
@@AllAmericanFiveRadio Oh those little metal cans with the tab. I've have some in my junk box. Some have a WHOPPING hfe of 43! Take care and have a great Labor Day weekend.
I recall constructing such a circuit using 1920's parts. The extra gain was at the expense of distortion, but such circuits saved on both the cost of valves & HT battery replacement.
Do you have any 73, qst or other ham magazine eras that are good to learn about building with tubes and any other books that explain well? I have a few books alreadyz i want as much knowledge as i can get
I have a FREE ebook that should get you started. It is in the “…more” of my RUclips channel. Here is the link to the download. The password is allamericanfiveradio Keep asking your questions! Ebooklink Password is allamericanfiveradio ruclips.net/user/redirect?event=channel_description&redir_token=QUFFLUhqa2hhVTRycWdJd1FUbTFCZWNmdGtQNlZCRmEzd3xBQ3Jtc0tuOFQ2bFhRcWdjdUdIcUREcnZFaHc0M2xURGhITVRuWDE2cGlDakdYUF9uODktNzc3TVRJTWdROUt6R3NLN2lla3hFS2lIM0RnOXR1dXFxMGx2cUNtWDhXb1Zvc2RCbGQxTThoendmN2E5R0lJdmI0Yw&q=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1HHmaWYr7UMACfmS4W5uL6PADoem2KlRp%2Fview%3Fusp%3Dsharing
Here are some videos that will help! Control Grid, Triode Tube ruclips.net/video/K_AJRIsNlR0/видео.html Triode Tube Amplification Visual Demo ruclips.net/video/4FkD0LRiu7A/видео.html A small bit of Radio History, Lee De Forest Audion, Marconi ruclips.net/video/ZT0i5iprLos/видео.html !923 Vacuum Tube, Amplitude Modulation Detector Circuit in Detail ruclips.net/video/e0faax3Svgw/видео.html Full Wave Rectifier Tube Type ruclips.net/video/yneDrxMdLP0/видео.html
C11 is a RF bypass capacitor, and a return path for RF. C11 is 1000mmF or 1000pF, at this capacitance it can pass RF frequencies very easily but almost no audio frequencies can pass through. I have done a few videos on this subject, the links are below. Keep asking your questions! RF Capacitor Resistor ByPass Circuit ruclips.net/video/NCQOi0U51zs/видео.html Capacitors, DC, AC, and Frequencies ruclips.net/video/YfJKNSkz_Lk/видео.html RF Bypass Capacitor Oscilloscope Demo ruclips.net/video/OILLayQjEjY/видео.html Capacitive Reactance and Frequency Demo ruclips.net/video/S5_7gGHxVyQ/видео.html
@@martinheppenstall2986 If the bypass capacitor was faulty the audio would distorted. It is a gradual increase as the capacitance increases the amount of audio that can pass through the capacitor increases. There are optimum values for bypass capacitors and audio capacitors.
![Blox Fruits Dragon Rework Update [Full Stream]](http://i.ytimg.com/vi/EqDAp8udhm0/mqdefault.jpg)
The engineers of Westinghouse in the 1960s or 1970's did a very intelligent job, by making this AM superhet with only 5 transistors. And using that 3rth transistor both to detect the AM signal + as a driver for the complementary end-stage, via that transformer. This was and is top (!). And many thanks for explaining this! No assault for Sony: but compare it to the Sony circuits of the 1980's & 1990's where they used 6 transistors in cases where only 3 (or even 2) could do the job...Compared to the Philips circuits where 2 or 3 did the job... Though Philips lost the EU market in the 1980's... Anyway: a good explanation of this beautiful Westinghouse radio circuit. Thanks Richard! 7 Sept. 2024.
Thanks Ko! Yes this is a very interest circuit for a transistor radio. I had to stare at this for a while.
George Westinghouse started his company in 1886 and they are here today. Westinghouse goes back to the beginning of radio. Westinghouse made the first radios for RCA.
Спасибо за Ваши видео! Вы говорите неспешно и внятно. Это позволяет мне совершенствовать мой английский на слух. Мне 64 года, я радиоинженер, и это помогает мне правильно понимать Ваши объяснения и замечать, где я ошибся в восприятии английской речи. Желаю Вам здоровья, сил и долгой жизни!
Игорь, Подольск, Россия.
Thank you! I wish you well and a long life also! I hope my videos help. I enjoy making the videos and trying to answer questions. Thanks again Игорь, Подольск, Россия.
I always learn something when I watch your videos. Thanks for posting!
Thank you, and your welcome.
That was awesome. I needed that refresher. More circuit walkthroughs would be great. No one else does them. Thanks!
Do you have any particular radio in mind?
Thank you!
I have another video you may like.
Superheterodyne AA5 from End to End
ruclips.net/video/glakoNN4lwA/видео.html
Very Nice! This is exactly what I need now to gain a better gut feel for how radio works. Thank You!
Thank you, and your welcome.
Another very good explanation of how a circuit works Rick. Appreciate the sharing. :)
Thanks Doug!!! It is unusual for a transistor radio.
Thank you for making things so clear.
Thank you, and your welcome.
Yet another great learning session from the Master! Thanks Rick!
Thank you, and your welcome.
Great video as always Rick. Got to love working with ONLY PNP transistors. Germanium was a whole different world of solid state technology. Take care!
Yes I bought my first transistor when I was in High School. It was a CK722 Germanium PNP. I thought it was amazing then and it is still amazing now. Thanks Ryan!!!
@@AllAmericanFiveRadio Oh those little metal cans with the tab. I've have some in my junk box. Some have a WHOPPING hfe of 43! Take care and have a great Labor Day weekend.
5:23 that’s called a reflex design, it was fairly common in the 1920s.
I recall constructing such a circuit using 1920's parts. The extra gain was at the expense of distortion, but such circuits saved on both the cost of valves & HT battery replacement.
I think it is unusual for a transistor radio. I forgot to talk about the volume control. Thanks for your comment.
Interesting. Thanks for sharing.
Thank you, and your welcome.
Radio is an art and back then transistors were expensive just like in the tube days.
The first transistor I bought when I was in High School was a CK722. My,, how things have changed. Thank you!
Do you have any 73, qst or other ham magazine eras that are good to learn about building with tubes and any other books that explain well? I have a few books alreadyz i want as much knowledge as i can get
I have a FREE ebook that should get you started. It is in the “…more” of my RUclips channel. Here is the link to the download. The password is allamericanfiveradio
Keep asking your questions!
Ebooklink
Password is allamericanfiveradio
ruclips.net/user/redirect?event=channel_description&redir_token=QUFFLUhqa2hhVTRycWdJd1FUbTFCZWNmdGtQNlZCRmEzd3xBQ3Jtc0tuOFQ2bFhRcWdjdUdIcUREcnZFaHc0M2xURGhITVRuWDE2cGlDakdYUF9uODktNzc3TVRJTWdROUt6R3NLN2lla3hFS2lIM0RnOXR1dXFxMGx2cUNtWDhXb1Zvc2RCbGQxTThoendmN2E5R0lJdmI0Yw&q=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1HHmaWYr7UMACfmS4W5uL6PADoem2KlRp%2Fview%3Fusp%3Dsharing
Here are some videos that will help!
Control Grid, Triode Tube
ruclips.net/video/K_AJRIsNlR0/видео.html
Triode Tube Amplification Visual Demo
ruclips.net/video/4FkD0LRiu7A/видео.html
A small bit of Radio History, Lee De Forest Audion, Marconi
ruclips.net/video/ZT0i5iprLos/видео.html
!923 Vacuum Tube, Amplitude Modulation Detector Circuit in Detail
ruclips.net/video/e0faax3Svgw/видео.html
Full Wave Rectifier Tube Type
ruclips.net/video/yneDrxMdLP0/видео.html
Very interesting sir.
Thank you, and your welcome.
This is a reflex circuit.
I think it is unusual for a transistor radio. I forgot to talk about the volume control. Thanks for your comment.
how does c11 know just drain 455 ??wouldn't it drain others as well?
C11 is a RF bypass capacitor, and a return path for RF. C11 is 1000mmF or 1000pF, at this capacitance it can pass RF frequencies very easily but almost no audio frequencies can pass through. I have done a few videos on this subject, the links are below.
Keep asking your questions!
RF Capacitor Resistor ByPass Circuit
ruclips.net/video/NCQOi0U51zs/видео.html
Capacitors, DC, AC, and Frequencies
ruclips.net/video/YfJKNSkz_Lk/видео.html
RF Bypass Capacitor Oscilloscope Demo
ruclips.net/video/OILLayQjEjY/видео.html
Capacitive Reactance and Frequency Demo
ruclips.net/video/S5_7gGHxVyQ/видео.html
@@AllAmericanFiveRadio Thank you ,what value capacitor would start letting audio through ?I guess if this capacitor failed it would get quieter ?
@@martinheppenstall2986 If the bypass capacitor was faulty the audio would distorted. It is a gradual increase as the capacitance increases the amount of audio that can pass through the capacitor increases. There are optimum values for bypass capacitors and audio capacitors.
go
Thank you, and your welcome.