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sir, how its reverse bias junctionJ3 gets turning ON without application any external voltage as in case of SCR we apply at this junction gate current to make a channel by apply +ve gate voltage . by application of this +ve voltage, minority carrier in the respective area in this case lower P region electrons concentration increase and they provide path to flow of anode current. but in PUT how the current is flow without J3 biasing changed? pls clarify sir.
sir, as the name suggests put ( unijunction ) it has to be only 1 junction, but in structure you have shown as a 3 junction device. please justify my doubt sir.
@electronic funda . sir, as the name suggests put ( unijunction ) it has to be only 1 junction, but in structure you have shown as a 3 junction device. please justify my doubt sir.
For this you have to understand working Of ujt and after you know that working is similar but we can change intrinsic stand off ratio but in ujt we can't.
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good video.Thanks a lot sirrr
Alot of thank you sir
Sir,In this way anode will be negative because it is directly connected to negative off VBB
Thank you very much sir
Nyc videos sir ur awesome
Your welcome
thaanks sir
Your Appreciations, care and share matters a lot to me. #EnginneringLove.
All the subjects playlist of Engineering Funda is available in comment section. Share it with your friends to support us.
Your positive comments motivates me and person like me get boosted by my students feedback. Thanks and welcome 🙏
sir, how its reverse bias junctionJ3 gets turning ON without application any external voltage as in case of SCR we apply at this junction gate current to make a channel by apply +ve gate voltage . by application of this +ve voltage, minority carrier in the respective area in this case lower P region electrons concentration increase and they provide path to flow of anode current. but in PUT how the current is flow without J3 biasing changed? pls clarify sir.
Sir,VBB negative should be grounded, not to be connected across R1
Can u please explain synchronised UJT triggering....
Hello,
I think the negative terminal of V_bb should be connected to ground and not to anode for V_G = V_bb(R3/R2 + R3).
Correct
sir, as the name suggests put ( unijunction ) it has to be only 1 junction, but in structure you have shown as a 3 junction device. please justify my doubt sir.
I think it's because "One junction is being programmed or in other way you can say controlled". One junction is being controlled.
How VG( gate voltge) will vary because R 3 resistance seems to be fix.
Bt sir u have explained that 'VG ' will vary by adjusting R3 Resistance . How ?
Negative terminal of vbb should be connected between R4 &R3
How come time period is only depended on R2?
Please sir give information about turn on and turn off methods of PUT
By positive pulse PUT can be turned ON and by negative pulse PUT can be turned OFF
After that we need to see the ratings of PUT and one can use it in circuit
@electronic funda . sir, as the name suggests put ( unijunction ) it has to be only 1 junction, but in structure you have shown as a 3 junction device. please justify my doubt sir.
yes
For this you have to understand working
Of ujt and after you know that working is similar but we can change intrinsic stand off ratio but in ujt we can't.
what u mean is that it is 3 TERMINAL DEVICE not 3 JUNCTION DEVICE...there is only one P-N Junction
PUT has three junction but why it is called programmable unjunction transistor..?
Hii Sir muze video me 7.30 wala equation nahi samza.why Vg=...........please tell me
Indian pets rohan joshi Vg is based on voltage divider rule
Engineering Funda thank you very much
your circuit at 7.00 seems to be wrong. Pls check it.
It's perfectly fine
Vgg = Vbb(r2/(r2+r3)) How Come ?
Voltage devider rule
nyc explanation sir...every thing is fine but why the video is being paused every time plzzz avoid this
Till now I have not paused video single time. I think you should check out internat connection
+Engineering Funda no sir tge problem is that timing is going on and there is no sound for some time
Sir,if I am wrong,reply please
Sir can you give us notes of PUT in pdf format
Battery connection is wrong,
Power BJT lecture nhi h vedio m
It is there in my power electronics playlist. I think it is there in 3rd video of playlist.
'minority' current
sir your writing in this video is very rough.Please increase your writing skill.or change your pen.Thank you
English ke sat Hindi me batavo Sir