hfe value measurement of transistor

[@shamalperera4875]

Sir your videos ,,very good .and ...clear voice with...exalant knowlage ..thanks sir..

[@rajeevsingh9874]

Sir aap kay sabhi videos say achi knowlage milte hai thanks sir

[@NK-sh1pn]

Aap ki video bahut help full Hoti hai ye 👍👍👍

[@champalalkandara7639]

सर आप बहुत आसानी से समझाते हो आपसे बहुत कुछ सिखने को मिलता है thanks❤❤❤thanks sir ❤❤❤ from rajsthan

[@shashankpandey8609]

अच्छी तरह से समझाया है आपने... धन्यवाद

[@sumanorakit7900]

Thanks sir bahut Badhiya se shamjhya Aapne

[@linkonbiswas7714]

Very important information

[@ravisharmasharma2252]

Sir Bahut hi badiya video aur jaankari di he aapne hfe ke baare me kam logo pata he isse logo ko bahut fayda ho sir amp ko switch laga kar stereophonic kese kar sakte he is par video banaye

[@yagneshpatel1183]

BHAI MONO AND STEREO SWITCHING MAI EK BALANCE CIRCUIT LAG TA HAI .

[@technogaming3396]

Sir bahut hi sahi jankari the

[@amitbhaijebaliya578]

Dhanyavad sir bahut achhi information thankyou sir🙏

[@RAKESHYADAV-zk1qx]

Bohoot hi khub video.

[@sukhboparai6266]

Very nice sir ji super

[@anjalidj8403]

Best jankari sir

[@Josephjirao]

Your contribution to students is god Gifted because good Dr, good scientists, good master all are gone to abroad thanks is very small may God bless you with health and wealth

[@prashanthiremath6334]

How much i see ur videos sir its too much value added to us ur doing great work

[@praveenmurkar743]

Very good information. Thanks

[@pandharinathshimpi5617]

Bhut badiya sar

[@rameshwarprasadmeena2400]

I thank you for informing people about the work. Such information is not easily available. The video is worthwhile

[@xtylishgallerycom]

Bhut Accra Sanjay

[@only4you637]

Bhut badiya maza aa gaya

[@shamalperera4875]

Good experiment sir.....

[@vishnushrivastav8761]

Very important knowledge provide this video. thank a lot sir.

[@fbi8383]

Thanks you for your important information

[@pushpatl50]

Bahut Behetrin Sir ....

[@Ashokkumar-tl1jx]

thank you sir for valuable information

[@tulsirammalviya1827]

Bahut bahut dhanyavad

[@vijaysinghwardha]

बहुत सुन्दर ।

[@maxxsmaxx1901]

Thank you for the valuable lecture and demo .

[@syedyaseen3700]

Very useful Infomation . Appreciateable 👍👍👍

[@DJROSHNIDJREMIX]

Mast

[@ajitvachani7397]

Nice video sar

[@parimitkushwaha9800]

Sir NTC wala system bhi please detail me explain kijiyega 🙏. Bahut hi acha samjhaya sir aapne

[@sumitdas7759]

Good information sir... Thanks for the video.

[@Bhushan.AudioTech]

Your explanation is very nice & informative sir, This Information not easily available sir, This lesson very useful for technicians. 🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻

[@surajgupta256]

Acha

[@chotumandal9609]

Great 👍👍👍👍👍

[@satishvasane6812]

धन्यवाद भाई साहब

[@कुन्दनचौहानहिप्रमण्डी]

Very nice

[@faizahmed.m1324]

🌹Thank you sir,for useful information 🌹

[@rohitpaul189]

Very very thank you sir🙏

[@HANNAH-vz1jw]

Nice video, Next one, make like this, thank you

[@omwagha2515]

Super sir

[@qaisarali97]

Sir ye video bahut achha raha, class H ka n channel ka 2000 watts ka video banaiye please.

[@electroarya815]

Awesome bhai

[@niranjantamhankar2651]

Ur great sir 👍

[@pravardhanus]

Nice idea for using NTC on the transistor heat sink to control the hfe.

[@ashokpurohit9940]

Verry nice sirso thanks 🙏🙇🙏🙇

[@pappukoshta1684]

Thank sir ji you have awesome knowledge

[@jbaudiosmoga]

Good information Sir ji , thanks

[@हिंद-भ3स]

👏👏👏👏🙏🙏🚩🚩🇮🇳🌹🌹

[@ramdasaher1886]

Nice video sir 🙏👍👌

[@sunilmzp3263]

Very very nice sir ji👌👌👌👌👍

[@shamimahmed4556]

Sirji Namaskar Bahut achha laga. Nice explanation. NPN transistor amplifier is best. But mostly complimentary vpair like 3055 2955 or 5200 1943 or 5198 1941 are being used in output stage. Moreover while measuring Hfe gain with DMM same transistor shows different different gain in case of c5200 or ttc5200 purchased at different time interval from different online sites / shops. Batch mfg. Main aisa hota hai. To kya batch match karke kharidna hota hai. Aap jaise fail karke reject kiya hai, waise to kharida gaya transistor ko kaise use karein, is par ek nuskha bataiye please. Yeh janiar bhi bahut jaroori hai. Thanks a lot sirji. Aap ne bilkul sahih bataya hai. Keep it up.

[@rainbowmat8204]

sir usually NPN aur PNP pair ke Hfe main difference hota hai......PNP ki reading usually ziada hoti hai

[@reenamahule8219]

🙏🙏🙏🙏🙏🙏 Thanks sir Worderful

[@nadeemsuper215]

अंदर की बात ! WOW 👍

[@raghunathkarmakar6117]

Nice video sir.. sir ahuja amplifier ka fault finding ka video banaye..up jitne amplifier ka video dalehe sab real he...apka channel me video se bahut kuch sekha hu.....thank you sir (wb purulia)

[@Raja-mc3bk]

OK sr super

[@rainbowmat8204]

sir aik mosfet Tansistor ka transistor banaiye

[@prashanthiremath6334]

I am not seen this type knowledge

[@arishkhan5100]

Sir ek video ntc se amplifire bysing voltage control karne ke liye banao

[@electroarya815]

Sir ntc senser ki video banao sath hi kaha use krna h or amplifier me uska circuit kese banaye

[@Bkamptech]

Thanks for that

[@harikambhoji3802]

Thank u so much Sir

[@rainbowmat8204]

merey Ustad ji hamesha output main NPN transistor use karna pasand kartey they

[@bongobarta1908]

vry nice sir.. kitna upar niche tak consider kr skte hain value???

[@bhushannaitam1321]

Sar ntc ka video banao

[@technicalsidhu8402]

Thank you sir...

[@vijayakarekar]

Good information sir, sirf driver stage kahi hfe check kate hai ya out put stage kaa bhi.....

[@AmplifierWorld]

Driver stage ke transistor ka Hfe value 100% match karna best hai. Output stage ke transistor ka value Agar 100% percent match hua to bahut hi Achcha result milega but itne sare transistor ka hfe value match karna possible Nahin Hai isliye emitter resistance lagaye jate hai jo hfe ko balance karte hai

[@vijayakarekar]

@@AmplifierWorld thanks for feed back....

[@suvamdas9332]

Sir npn transistor ka undar 5401 or a1015 konsa sahe hoga use ka liya transistor ka input stage ka amplification ka liya. ..

[@AnalyticalMind123]

Why didn't i got u as my faculty on my engineering days😊😊😊😊

[@AmplifierWorld]

,😆😆😆

[@shamimahmed4556]

Thanks for sharing your topic on hFe of transistors. This helped me lot. I had prepared corel files for so many npn and pnp complementary pairs at output and driver stage. Also collection of both pnp and npn output transistors most commonly used in amplifiers. But today, your lucidly explained on hFe broadened my knowledge. So now I can concentrate on NPN transistors with having almost likely same hFe. My question here arises that if I make or utilise for home purpose say only 50 watt output, wherein I am not going to utilize the transistors full gain/ saturation, may be half of it's gain. Can I use complementary pairs of C5200 and A1943? Kindly suggest me. Thanks in advance.

[@AmplifierWorld]

Most output transistor are connected with emitter resistance to match difference of their hfe value you can use very easily 5200 and 1943 pair if there not matching Hfe , emitter resistor will compansate. Only driver transistor are required to match their hfe value but sometime some PNP and NPN transistor has great different hfe value .

[@shamimahmed4556]

@@AmplifierWorld Oh! I could follow your reply. Every pnp and npn complementary output transistor has 2 resistance compensated at its emitter. So, only driver transistor, say BD139 and BD140 can it be replaced with MJE340 and MJE350 perfect complementary pairs. Regards

[@AbhishekTiwari-rh5ke]

Kya ise bhi match hona jaroori hai

[@pintuchauhan673]

Sir 400W ke liye tarnsfarmar konsa lagaye

[@yagneshpatel1183]

DEPEND UPON VOLTAGE . BEST TO 70-0-70 HAI TRANSISTOR AMP KELIYE CIRCUIT PCB CHIYE TOA MERE DOST KI CHANNEL LO EK BAR SIRF PLS .kzbin.info/door/UlqMj7OTkaqUnlA-2NXHlAvideos

[@sunilgautam4986]

Local 60watt pa amplifier ka circuit diagram bataye pls jisme teen transformer hote hai driver board nahi hota

[@yagneshpatel1183]

kzbin.info/door/UlqMj7OTkaqUnlA-2NXHlAvideos EK BAR PA SYSTEM DHEK LO FIR MAT PUCHNA KISI KO . 30WATT - 1000W KA DATA AND PCB FILE HAI .

[@cancer-2012]

Mera ek question hai... Output stage me c5198 aur a1941 kaise kaam karte hain ? Mere sub-woofer me ye pair lage hue hain. One pair give 50watt. Can you answer it?

[@AmplifierWorld]

C5198 ki 140v and 10amp current capacity hai, ye ek pair 70 watt ka hota hai jo ki hi fi audio amplifier ke output stage me lagta hai. Aap isko dj amplifier ke Driver stage me bhi use kar sakte hai jo ki 20 pair transistor ke base ko voltage and current de sakta hai

[@cancer-2012]

@@AmplifierWorld thanks for replying.. kya ek transistor yada garam nhi hoga (due to their hfe difference) ?

[@joshielectronicsoundsarwar3084]

Transistor bising voltage ko control karne ke liye NTC kaise lagaen kis number ka Laga y

[@AmplifierWorld]

NTC depend on circuit design

[@suvamdas9332]

Sir ntc sa kasa transistor ka baising voltage ko set karu please boliya. ..

[@brc.yogendratechnical7750]

Sir driver board ka pcb ke bare me batao sir pls

[@AmplifierWorld]

Please wait, jarur bataunga, thanks

[@brc.yogendratechnical7750]

Bahot bahot thanks sir am waiting

[@yagneshpatel1183]

kzbin.info/door/UlqMj7OTkaqUnlA-2NXHlAvideos YHE DHEK LO SARE PCB MILE GE ... MERE FRIEND KA CHANNEL HAI.

[@sonysounddj323]

Sir अगर ntc miss match hai to humming ayega baising voltage set karne se

[@AmplifierWorld]

NTC mismatch hone se huming per Koi Fark Nahin Padega

[@KISUNDEOGUPTA]

Hi shir ok ,hit sink me snsar keshe kneksan kre deedar bod me kha kre btane ki kripa kre

[@AmplifierWorld]

हीट सिंक सेंसर को मेन हीटसिंक के ऊपर लगाना है और ड्राइवर बोर्ड में उसका अलग से सर्किट होना चाहिए, जो कि अभी तक किसी यूट्यूब वीडियो में डिटेल्स में नही बताया है। मैं बाद में इसपर वीडियो बनाऊंगा

[@motivisonalvideo4201]

Hfe valu to far kasa match kara

[@Vishalkumar-mu5hy]

Sir transistors ke uper ek serial number hota hai jese 5200, 1943 per (907 , 909) is number ka kya effect hai iske baare me b bataiega.

[@AmplifierWorld]

Batch no.

[@AbhishekTiwari-rh5ke]

Sir 5200 aur 1943pair me use Karna sahi hai

[@AmplifierWorld]

आउटपुट स्टेज के ट्रांजिस्टर की एच एफ ई वैल्यू मैच नहीं करने से भी चलेगा लेकिन इनपुट स्टेज और ड्राइवर स्टेज के ट्रांजिस्टर की hfe वैल्यू मैच करना बहुत जरूरी होता है और उससे एंपलीफायर की बहुत सारी एरर वाली प्रॉब्लम सॉल्व हो जाती है जैसे डीसी ऑफ सेट और वन साइड ओवरहीटिंग

[@maxxsmaxx1901]

I have received an amplifier for repair ( Ahuja SSA 250 M) all the power transistor numbers are rubbed off. Can you please tell me the correct number of the power transistors ?

[@AmplifierWorld]

Please visit my 250 watt pa amplifier circuit diagram video

[@AmplifierWorld]

Please visit my 250 watt pa amplifier circuit diagram video

[@maxxsmaxx1901]

@@AmplifierWorld Is it the same circuit as Ahuja SSA 250 M ? Thank you

[@AmplifierWorld]

@@maxxsmaxx1901 not100%sure but almost same

[@maxxsmaxx1901]

@@AmplifierWorld Thank you

[@vijeshwarkhobragade6797]

सर, ज्यादा तर Amplifier pnp or non transistor ke hi hotel hai ! तो उसमे कैसा करें , और Market मैं transistor कोनसा खरीदा जाये ? इतना बताईए सर , 🤔🙏

[@AmplifierWorld]

Aap npn and pnp me amplifier board banane ja rahe hai to har ek transistor ka hfe value lekar lagaye, aap shop par hi sabhi transistor ka hfe lekar aur almost same value vaale transistor le sakte hai, but shopkeeper manana chahiye, company me jo amplifier bante hai usme company lot me transistor kharidti hai jisase same hfe value match karne me aasani hoti hai

[@vijeshwarkhobragade6797]

समझाने के लिए धन्यवाद सर!🙏

[@vijeshwarkhobragade6797]

सर, मेरी रीकवेस्ट आपने पूरी नहीं की ? जो DC to DC कनवर्टर बनाने की , जो कार सब्ब ऊफर amplifier चला सके ? ,👋👋

[@AmplifierWorld]

@@vijeshwarkhobragade6797 vo bhi puri kar denge bhai,

[@hobbyelectronicheip9032]

Sar ji aapka shaadi Ek Bar counter kar sakta hun

[@nitinrastogi724]

Something wrong something right information in case we make an amplifier without output transformer we can ignore hfe value in driver and output stage if we make an amplifier with output transformer , hfe value create major problem.

[@shamimahmed4556]

You are very much right. How many transistors we have to reject? Moreover same transistor purchased at different times, different batch, different shops, different mfg co. Hfe varies. End result would be Driver or Output transformers, where DC isolation is also there which protects Speaker also. Please inform any circuitry available with output transformer. Thanks in advance.

[@LakhwinderSingh-gx7jk]

Sir ntc kya hota hai

[@AmplifierWorld]

NTC Ek type ki resistance hoti hai Jiski value temperature badhane per kam Ho Jaati Hai

[@MehmoodulHassan-u8x]

Good

[@kisshorshasshtri572]

Nice