V35 Zener Resistor Calculation | How to Calculate Zener Diode and Series Resistance Value and Watt
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- เผยแพร่เมื่อ 27 พ.ย. 2023
- zener diode calculation / series resistor calculation / zener watt calculation / zener diode feedback working / zener diode voltage calculation / drive optocoupler with zener diode / smps feedback section in Hindi / smps output voltage regulate / smps output voltage fluctuation / smps output voltage details / smps output voltage high / smps output fluctuations / smps output blinking / smps output nahi de raha hai / smps no output voltage / smps low output voltage problem hindi / modify smps output voltage / smps secondary section repair / smps power supply in hindi / smps repairing all sections practical tips in hindi / smps kya hota hai / switching power supply / smps kaise kam karta hai / smps working principle / smps working in hindi / smps working principle in hindi / smps feedback circuit / smps feedback circuit diagram / feedback circuit in smps / Resistor calculation / ohms law in hindi / increase decrease modify output voltage
#watt #optocoupler #PC817 #zenerdiode #resistor #series #ohmslaw #Feedback #calculation #smps
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Video kafi knowledgeable hai, thanks,ek nivedan hai sir jaise aapne 60 ohms ki resistance to calculate kar li aur bata diya , lekin sir 60 ohms ki resistor market me easily available nahi hai to uski jagah 120 ohms ki do resistance parallel me laga kar 60 ohms ki resistance ban jati hai, theek usi tarah se 10.8 volt ka zener easily available nahi hai to uski jagah kya laga sakte hain,sir inko kaise calculate karna hai ye bhi bataye, meherbani hogi
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Agar yaha optocoupler ki parallel mei resistor nehi use kiya to kiya hoga?zener diod to already voltage ko drop kardegi.or acchase samjaiye plz or satme yebi bataiye resistor valu jada honese kiya hoga or kam honese kiya hoga
Resistor nahi lagane par extra voltage ko drop hone ke liye koi jagah nahi hogi aur poora load zener par padega aur wo kharab ho sakta hai dost...
Thank u so much reply karneke liye,apki video dekke mene bohot kuch sikha lekin resistor ki puri working muje samajme nehi ati,resistor kabi series me or kabi parallel me use hotihe kabi voltage drop karneke liye kabi currentko limit karneke liye.muje lagtahe serf resistor ki barome abi bohot kuch jana joruri he mereliye
Pl explain inverter welding machine
After SMPS tutorials...
🙏 sir what am I asking is right or wrong? We are connecting led and resistor in parallel so current of it will be sum of both. So current is going through Zener diode will not be 40mA? Is this right or wrong. I m mechanical engineering person but want to learn electronics from such a confident person like you. 🙏🙏🙏
You are right brother but as per the datasheet, the optocoupler's LED's maximum permissible current is 20ma. We still kept zener current as 20ma because we want LED to be safe. When LED and the resistance will share that 20ma togather, the LED's current will never exceed 20ma and this will keep it within safe working range. Hope it is clear now. 🙏
Nice🎉🎉🎉🎉🎉🎉 video
Thank you brother 🙏
Zener diode ka current 40 Milli ampere hona chahiye
Sir current to optocoupler ki led sa ho ka bhi ground ho sakta tha par es ka saath parallel ma resistor kyun lgai jaati hai
Voltage drop karwane ke liye dost ❤️👍
Sir jo China ke charger hote he local
jisme zener diode or Tl431 or optocoupler nahi hote he
sir jisme resistor hote feedback ke liye 12 volt me kar dijiye
par sir ek request he graund ka resistor kon sa hota he samjha dena kaafi time ho gya wait karte
OK brother ❤️👍
Sir current parallel me distribute hoti hai ... Toh. Kya led section me current... Alag hugo
Aapka sawaal samjh nahi aaya dost 🤔
Excellent Sir.es diagram 10.2 volt ka zener revers bais laga ha 10.2 volt drop hovai 1.2 led per pohoncha agar zener forward bais lagaya jaye to kia situation hogi?
Thank you sir.
Agar zener forward bias me lagaya to zener par sirf 0.7v hi drop honge aur 11.3v series resistor par aa jayenge...Jo ki LED ko kharab kar denge ..
@@vccground-hindi thank you sir
Sir, if I don't have 10.8v zener & I have 9v zener then can I calculate with same manner maintaining 12v output?
No Sir, Zener voltage should be correct.
कृपया inductor के बारे मे पुरी जानकारी दें। किसी भी coil की value कैसे देखें । अगर ये खराब हो जाए तो उसकी जगह कोई भी क्वाइल लगा सकते है कि नहीं? रेजिस्टर टाइप क्वाइल की रीडिगं,उसकी वाटेज आदि सारी जानकारी विस्तार से बताने का कष्ट करें। धन्यवाद
ज़रूर दोस्त 👍
Sir I think current flow in zener is 20+20=40mA . Are you agree?
Yes brother
sir mai 12 ya 25 volt ki supply h direct tl 431 me + n _ lagau aur tl 431 1pin pr 10k ka pot lagau jisse volt variable hoga to smps ki + ke sath sersir resister kon se value ki lagegi take tl431 kharab na ho plz rply
10k ki resistance laga do ❤️👍
share the method of voltage calculation
Which voltage you are taking about brother ?
To sir kya optocoupler ki led sa nahi voltage drop honga
LED par lagbhag 1v hi drop hota hai...
Bhai saheb mobile charger me optocupler nahi lgaya gaya hai to feadebacke kaise Jane ki kaun si resistance di gayi hai
Bina optocoupler Wale mobile charger ki video bhi aage aane wali Hain. Usme samjha denge 👍
Sir ji ager out volt 24v hai tab r ki value kaya hogi
R ki value to wahi rahegi, zener diode ki voltage aur wattage badal jayegi dost ❤️👍
Sir output Capacitor kharab honepar output voltage lode connect karnepar kyu down hota hai
Kyuki capacitor kharab hone par wo poore voltage level ko hold nahi kar pata hai, iss liye load lagane par voltage down ho jata hai...
But value of current in ziner diode and octocupler led and resistance is not same 20 mA
sir, ek doubt hai.. agar hum 10.8 v ka zener lagayen toh resistor lagane ki jarurat kyun hai..?
Extra current ko drop karne ke liye. Nahi to LED kharab ho jayegi...
@@vccground-hindi sir hamko toh sirk 1.2 v hi chahia.... toh ye resistor zener k protection k lia hai..
sir zener diode 10.8v ka nahi ata he fir konsi value ka zener lagana chahiye please reply
11V ka laga do, optocoupler LED 0.8v tak bhi kaam karti hai .. 👍
The current through the Zener diode should be 40 mA otherwise the KCL at the node connecting the three elements will not be satisfied.
As per KCL, You are absolutely correct brother. But here we are calculating for absolute maximum values. 20ma is the maximum current value to be passed through the LED but under ideal condition this would be lower than that. If in any circumstances, the resistance opens or the LED gets faulty, the remaining branch should be able to handle at least 20ma of current flow through it. So 20ma would be the maximum current passing through the diode. That's why, in practical feedback circuits, you will always find a half watt zener installed.
I strongly believe that current through zener must be 40 mA due to loading effect,if zener current as per your explanation is 20 mA then current through opto led and 60 ohm resistor would be 10 mA each. please correct me if I am wrong.
@@manhardanmahedu3765 Theoretically you are absolutely correct brother. But here we are calculating for absolute maximum values. 20ma is the maximum current value to be passed through the LED but under ideal condition this would be lower than that. If in any circumstances, the resistance opens or the LED gets faulty, the remaining branch should be able to handle at least 20ma of current flow through it. So practically, 20ma would be the maximum current passing through the diode.
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Sir very very very knowledge full video
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Thank you brother 🙏
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