Comments on: Replaced IFT With Imported In PHILIPS Valve (TUBE) Radio Model MAJOR https://jestineyong.com/replaced-ift-with-imported-in-philips-valve-tube-radio-model-major/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Mon, 10 Mar 2025 07:52:17 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: samy https://jestineyong.com/replaced-ift-with-imported-in-philips-valve-tube-radio-model-major/comment-page-1/#comment-447605 Mon, 10 Mar 2025 07:52:17 +0000 https://jestineyong.com/?p=33645#comment-447605 In reply to Parasuraman S.

Great effort and achievement - these devices that work with valve technology perform much better than transistor devices.

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]]> By: Natarajan https://jestineyong.com/replaced-ift-with-imported-in-philips-valve-tube-radio-model-major/comment-page-1/#comment-436225 Tue, 15 Oct 2024 13:37:20 +0000 https://jestineyong.com/?p=33645#comment-436225 Dear Sri Parasuraman
Thanks for sharing a IFT replacement/fixing a problematic one.
I used to recollect when I was learning through Sri Govindaswamy of Chennai
Gemini Institute.
Time and again I insist there should be an Institute in India like
Novatech. Hope Mr.Jestine will take some efforts.

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]]> By: Waleed Rishmawi https://jestineyong.com/replaced-ift-with-imported-in-philips-valve-tube-radio-model-major/comment-page-1/#comment-435358 Mon, 07 Oct 2024 05:40:44 +0000 https://jestineyong.com/?p=33645#comment-435358 that is an intensive surgery process you have just shared with us. I congratulate you on such repair and success. thanks for sharing and have a blessed day my dear friend.

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]]> By: PHILIP https://jestineyong.com/replaced-ift-with-imported-in-philips-valve-tube-radio-model-major/comment-page-1/#comment-435327 Sun, 06 Oct 2024 21:34:20 +0000 https://jestineyong.com/?p=33645#comment-435327 I cant thank you enough, Parasuraman. In our country artisans and technicians are called liars because they dont mostly keep their promise to work on clients items, so cients dont always believe what they say. Parasuraman, I do repair small radios once in a while but the set up of the antique radio and the explanation of how the repair was carried out left me mostly overstretching my imagination so as to grasp some little techniques. Hard as I tried to be on the same page with you I only half understood the artical. Not even zooming the photos helped me gain much. Well, understandably, I have never stepped in an elecronics classroom. But if I may ask, how could all the two transformers call it a day and why must they be two? No mention of their output voltage, you never know I may soon be in need of one of the 16, especially if its adjustable.

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]]> By: Jayakumar.P. https://jestineyong.com/replaced-ift-with-imported-in-philips-valve-tube-radio-model-major/comment-page-1/#comment-435293 Sun, 06 Oct 2024 14:23:42 +0000 https://jestineyong.com/?p=33645#comment-435293 Sir,
Great work.Your style of writing needs special appreciation.Keep writing.
Thanks

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]]> By: Henrique J. G. Ulbrich https://jestineyong.com/replaced-ift-with-imported-in-philips-valve-tube-radio-model-major/comment-page-1/#comment-435292 Sun, 06 Oct 2024 14:10:55 +0000 https://jestineyong.com/?p=33645#comment-435292 Great, Parasuraman. Thanks for sharing and for remembering me the beautiful old times servicing antique tube radios.
You said the IF frequency is 452 kHz, but in general is 455 kHz. Is it correct?
Another thing is related to the IFT part “double” circuit. Generally there is no coupling capacitor, as the coupling itself is performed only inductively. Looks like two IFTs are used between the two valves, coupled with a 100 pF capacitor (I suppose the first valve is the mixer). For me, this is not so a common circuitry.
You tuned the IFTs just by hearing, not with the oscilloscope or another measuring instrument. I used to do the same way, and the results were always good.

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]]> By: Parasuraman S https://jestineyong.com/replaced-ift-with-imported-in-philips-valve-tube-radio-model-major/comment-page-1/#comment-435271 Sun, 06 Oct 2024 09:33:56 +0000 https://jestineyong.com/?p=33645#comment-435271 In reply to Mark J.

Many thanks, dear Mark!

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]]> By: Parasuraman S https://jestineyong.com/replaced-ift-with-imported-in-philips-valve-tube-radio-model-major/comment-page-1/#comment-435270 Sun, 06 Oct 2024 09:33:40 +0000 https://jestineyong.com/?p=33645#comment-435270 In reply to Yogesh Panchal.

Vow! A pleasant comment with deeper meanings! Many thanks, Yogesh Bai!

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]]> By: Mark J https://jestineyong.com/replaced-ift-with-imported-in-philips-valve-tube-radio-model-major/comment-page-1/#comment-435211 Sat, 05 Oct 2024 19:34:49 +0000 https://jestineyong.com/?p=33645#comment-435211 Parasuraman thank you for sharing this great article. Well done.

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]]> By: Yogesh Panchal https://jestineyong.com/replaced-ift-with-imported-in-philips-valve-tube-radio-model-major/comment-page-1/#comment-435189 Sat, 05 Oct 2024 15:01:48 +0000 https://jestineyong.com/?p=33645#comment-435189 Such an inspiring work,thorough technicians will know how the booster coil (you) works in the circuit (our community).

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