Aapka video bahut hi achcha Laga sir please ek LED scalar board mein jo PF Lage hote Hain Jo chote bade hote Hain Jo PF kitni value ka hai uske upar ek video banaye thank you sir
Power Supply ke primary section me ek N-channel mosfet laga hota hai transformer ko switching karane ke liye... Usska gate 5,6,7v volt pe kaise trigger hota hai ??? jabki ussko 320v se bhi jyada hona chahiye ??? batao sir
As an Electronics and Communication Engineering Student... I have worked on a lot of switching PSUs.. From Flybacks to Full Bridge LLC Resonant Converters.. Come to your question.. am not going to talk about cheap ass Half bridge push pull PSUs.. 1)Dual Switch Forward - In this PSU.. there are 2 switching FETs.. and both FETs are controlled together at the same time with Isolated Gate Driving Circuitry.. (Using A tiny Gate Transformer) that drivers both MosFETs together but.. have isolation from low side switch and high side switch and Driving Circuitry.. 2) In Half Bridge LLC Resonant Converters (an Example Coolermaster MWE 450 bronze V2).. also uses a Gate Driving Transformer. But this Gate transformer sits between primary and secondary side.. (secondary side actually has PSU FM Controller that controls primarily FETs using gate driving transformer and current amplifier Circuitry to drive From Low side of The PSU.. (this controlling circuit for primary Rails works 5Vsb Powersupply.. 3) In Full Bridge LLC Resonant Converters.. It's the same as Half bridge but uses 4 separate driving coils to drive 4 MosFETs in bridge configuration. To Which at a time only 2 FETs conduct at a time.. In Flyback Topology (like on phone chargers).. Transformers are usually switched from the low side.. (-ve side of Rectified mains) and its Gate is controlled from a very small resistive dropper later fulfilled by Flyback coil from transformer. It is used to power the controlling circuitry. Hope this Answers the question..
@@ArifKhan-bp9zx very well and nicely explained dear brother... but I haven't asked for this. you're talking all about smps power supply topologies and design principles but let's come to my question ? The lecturer in this video has said that we need to consider the drain voltage of P/N channel mosfet to provide the required voltage to gate to enable the mosfet. (I guess he is wrong) that's why asked him or his institute, why we have 5v or around 7-8 volt. in gate of smps switching mosfet (N-Channel) ? Whether we have 320 to 340v on it's drain pin.... as per his statement we should then get high voltage of 340v on it's gate to enable it for switching right. Then why we have 5 to 8v on it's gate ? As per my knowledge, whether it is N-channel or P-channel we always need to consider it's Source pin to select a required supply of gate.
@@atifservicecenter Main Question ki baat kare ki kaise MosFET on hota hai... Pehle circuit ke bahar MosFET ko on karne ke lea... Hame Threshold (Vgs)voltage se zada ka Voltage gate pe Dena hai.. most MosFETs pe maximum Open Drain to Source Voltage bhi hota hai.. Like GP13N50 MosFET ke baat kare to.. it's 500volts (Vds) hota hai.. usse Gate ko koi farak nahi padta.. bas Vds should be low.. (MOSFET non conditioning ke time) . Agar 550 Voltage hoga to MOSFET automatically short ho jayega.. MOSFET ko on karne ke lea Voltage dene hota hai gate pe.. threshold voltage se zada.. but Vgs max se kam hona chahea.. otherwise.. MOSFET fir se kharaab ho jayega.. Voltage Source ke refrence me lagana hai.. na ki floating Voltage dena hai gate pe... Vds kitna bhi ho Vgs should be under limit... Ha PMos me Gate voltage negative likha hota hai.. like -20 volts.. it means.. agar ham multimeter se naape.. from gate to source.. to -20 voltage show hoga... But actually me.. vo Source se Gate measure kare to 20 volts positive voltage show hoga... MOSFET driving me Vgs should be under the specified value.. Either it's n mos or p mos... Vgs should be more than Thresholds Gate voltage.. andd less than max vgs..
I supply the current 5v to charge a 3.7v battery..so battery full charged...auto cut (auto switch). Should happen when the battery full charged... (auto switch 5v to 1.5v) So what should I do?
N-channel MosFET Tab conduct karta hai jab.. Gate to source voltage.. Threshold voltages se equal ya usse zada hota hai.. to Gate and source pin ke beech kuch to lagana hoga.. P channel MosFET Ko enable karne ke lea Source to gate voltage chahea hota hai... (Source pe input already jab a raha hai from +ve rail. To Source to gate, means gate should be 0 voltage.. means connected to ground.. enable hone ke lea.. I guess utna samajh aa gata hoga
BJT is little harder to get the idea at first.. but baad me easy hai.. MosFETs starting me easy hai but baad me bahut hard hai.. to totally understand them..
Aapka video bahut hi achcha Laga sir please ek LED scalar board mein jo PF Lage hote Hain Jo chote bade hote Hain Jo PF kitni value ka hai uske upar ek video banaye thank you sir
After watching this video don't understand anything else because in this video Vikram Sir has explained everything ❣️❣️❣️❤🎉🎉🎉😊😊😊
Good yar bhot Acha Sam Jane kA tariqa
Badiya 🎉🎉🎉🎉🎉🎉🎉
Jabardast video sirji😊😊😊
Nice information sir
Pls transister ke base basing or base voltage ki bhi video banay
मैने अपने पुरे जीवन में इससे अच्छा विडीयो नहीं देखा ऐसा एक वीडियो transistor के उपर बनाएं आपको मेरा चरण स्पर्श
Thanks vickram sir ji full explanation ke liye
Very nice sir
Good video
Best sir
Important info.
Sir very good excpelen 🙏🙏
Good conseft sir
Best institute of Multitech institute ❤️❤️
Best Information sir
Very nice information sir
Power Supply ke primary section me ek N-channel mosfet laga hota hai transformer ko switching karane ke liye... Usska gate 5,6,7v volt pe kaise trigger hota hai ??? jabki ussko 320v se bhi jyada hona chahiye ??? batao sir
As an Electronics and Communication Engineering Student... I have worked on a lot of switching PSUs.. From Flybacks to Full Bridge LLC Resonant Converters..
Come to your question.. am not going to talk about cheap ass Half bridge push pull PSUs..
1)Dual Switch Forward - In this PSU.. there are 2 switching FETs.. and both FETs are controlled together at the same time with Isolated Gate Driving Circuitry.. (Using A tiny Gate Transformer) that drivers both MosFETs together but.. have isolation from low side switch and high side switch and Driving Circuitry..
2) In Half Bridge LLC Resonant Converters (an Example Coolermaster MWE 450 bronze V2).. also uses a Gate Driving Transformer. But this Gate transformer sits between primary and secondary side.. (secondary side actually has PSU FM Controller that controls primarily FETs using gate driving transformer and current amplifier Circuitry to drive From Low side of The PSU.. (this controlling circuit for primary Rails works 5Vsb Powersupply..
3) In Full Bridge LLC Resonant Converters.. It's the same as Half bridge but uses 4 separate driving coils to drive 4 MosFETs in bridge configuration. To Which at a time only 2 FETs conduct at a time..
In Flyback Topology (like on phone chargers).. Transformers are usually switched from the low side.. (-ve side of Rectified mains) and its Gate is controlled from a very small resistive dropper later fulfilled by Flyback coil from transformer. It is used to power the controlling circuitry.
Hope this Answers the question..
1 N channel MosFET Means its either a Flyback Topology or Single Switch forward topology..
@@ArifKhan-bp9zx very well and nicely explained dear brother... but I haven't asked for this. you're talking all about smps power supply topologies and design principles but let's come to my question ?
The lecturer in this video has said that we need to consider the drain voltage of P/N channel mosfet to provide the required voltage to gate to enable the mosfet. (I guess he is wrong) that's why asked him or his institute, why we have 5v or around 7-8 volt. in gate of smps switching mosfet (N-Channel) ? Whether we have 320 to 340v on it's drain pin.... as per his statement we should then get high voltage of 340v on it's gate to enable it for switching right. Then why we have 5 to 8v on it's gate ?
As per my knowledge, whether it is N-channel or P-channel we always need to consider it's Source pin to select a required supply of gate.
@@atifservicecenter Main Question ki baat kare ki kaise MosFET on hota hai...
Pehle circuit ke bahar MosFET ko on karne ke lea... Hame Threshold (Vgs)voltage se zada ka Voltage gate pe Dena hai.. most MosFETs pe maximum Open Drain to Source Voltage bhi hota hai.. Like GP13N50 MosFET ke baat kare to.. it's 500volts (Vds) hota hai.. usse Gate ko koi farak nahi padta.. bas Vds should be low.. (MOSFET non conditioning ke time) . Agar 550 Voltage hoga to MOSFET automatically short ho jayega.. MOSFET ko on karne ke lea Voltage dene hota hai gate pe.. threshold voltage se zada.. but Vgs max se kam hona chahea.. otherwise.. MOSFET fir se kharaab ho jayega.. Voltage Source ke refrence me lagana hai.. na ki floating Voltage dena hai gate pe... Vds kitna bhi ho Vgs should be under limit...
Ha PMos me Gate voltage negative likha hota hai.. like -20 volts.. it means.. agar ham multimeter se naape.. from gate to source.. to -20 voltage show hoga... But actually me.. vo Source se Gate measure kare to 20 volts positive voltage show hoga...
MOSFET driving me Vgs should be under the specified value.. Either it's n mos or p mos...
Vgs should be more than Thresholds Gate voltage.. andd less than max vgs..
Nice
Good information sir
Very good sir 🙏
Good information 👍
❤ super explain no compression
Nice informative video. Thank you
Nice 👍 sir
❤❤❤❤❤
thnx
🥇👌
Great guruji ❤
Nice information sir ❤
Aisa hi video transistor pe banaye npn transistor sirf forword biase mai current pass karta hai na
Great job
Please make video for transistor
Thanks Sir
I supply the current 5v to charge a 3.7v battery..so battery full charged...auto cut (auto switch). Should happen when the battery full charged... (auto switch 5v to 1.5v) So what should I do?
0 volt par jab mosfet ineval ho jayega to phir voltage ka kaya jarurat hai gate par.
N-channel MosFET Tab conduct karta hai jab.. Gate to source voltage.. Threshold voltages se equal ya usse zada hota hai.. to Gate and source pin ke beech kuch to lagana hoga..
P channel MosFET Ko enable karne ke lea Source to gate voltage chahea hota hai... (Source pe input already jab a raha hai from +ve rail. To Source to gate, means gate should be 0 voltage.. means connected to ground.. enable hone ke lea.. I guess utna samajh aa gata hoga
Rasistor ko acche se explain sir 1om ko kaise check kare in hindi
All components corse
BJT KA BATAV BHAYA🙏
BJT is little harder to get the idea at first.. but baad me easy hai.. MosFETs starting me easy hai but baad me bahut hard hai.. to totally understand them..
2x speed only
Kuch samj nahi aya 4 bar dekha hia koi difference ni bta saka p-channel aur N-channel man.
Kuch samjh nahi aaya😢😢
Good video