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Hi FvM
I agree with you, people has been telling me i need to just see it that its stable. i guess its just me adamant enough to press on. its easier to remember this vcircuit behaviour when i can understand it in a chronologically way though i doubt ill forget this circuit now. thanks for your...
hi thanks for the reply.
I think now I understand and I agree. so the explaination must be supported by formula as well.
question regarding ur previous explaination.
" this is not the normal operation of the circuit therefore a large current will flow through base of Q2 which will increase...
Hi Mahdi3999,
thanks for the circuit description, this might be the one im looking for. just something im not sure of:
why do u say this
" therefore neglecting R*Iout in this relation we can conclude that turning on 3 of the transistors will force the forth one to turn on. "
why is it when...
Im sorry. Its a bit difficult for me to follow. Can you please explain based on my first post. What do you mean by negative loop gain.
Just imagine like u are teaching this circuit to me. No need any formula. Just want to know how it works and why.
Why does it not cause complete short at Q2...
If im not mistaken u mean to say that should the current goes high enough through Q4 while Q2 is off, the high currrent causes high drop at emitter resistor, limiting vbe of Q4 eventually shutting off Q4 when vbe is less that turn on voltage, which makes current from Q3 flows to base of Q2 now...
Hi FvM
From what i read this circuit works in the end independant of input current, and depends mainly on the emitter area, normally in example 4:1 with Q4 emitter area is larger.
but I still cant figure out how the circuit works where currents flows to both sides, it should be just either...
Thanks for the reply.
From what i read, this PTAT generator is self biased (I think maybe no startup biased is needed but Im not sure)
Also for PTAT generator to works both Q2 and Q4 need to turn on. It has something to do with translinear principle from what I have researched where in the...
Hi good day,
If someone could please explain to me this circuitry working principle. I have search many books and articles but havent really find any answer to my question.
I understand how the bandgap reference circuit works and the principle. I can understand the typical bandgap reference...
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