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NdeveR
Group Title
H4P1: Zener Regulator
A nonideal voltage source can be modeled by a series combination of an ideal DC voltage source, a resistance, and a smallsignal voltage source. The smallsignal source is included to represent the noise inherent in the source. This model is illustrated in the figure below:
In practice, connecting the nonideal voltage source to a load may result in undesirable effects due to the noise voltage vo appearing across the load.
This problem studies such effects and how a Zener diode may be used to ameliorate the problem.
Assume that VI=13.0V, RIN=1kΩ, and vi=20.0m
 2 years ago
 2 years ago
NdeveR Group Title
H4P1: Zener Regulator A nonideal voltage source can be modeled by a series combination of an ideal DC voltage source, a resistance, and a smallsignal voltage source. The smallsignal source is included to represent the noise inherent in the source. This model is illustrated in the figure below: In practice, connecting the nonideal voltage source to a load may result in undesirable effects due to the noise voltage vo appearing across the load. This problem studies such effects and how a Zener diode may be used to ameliorate the problem. Assume that VI=13.0V, RIN=1kΩ, and vi=20.0m
 2 years ago
 2 years ago

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NdeveR Group TitleBest ResponseYou've already chosen the best response.0
there is more to this problem: and here are some pictures Again, we calculate vo (i.e. output noise) and VO (i.e. DC output voltage) for RL=2kΩ and RL=4kΩ for this new circuit. Hint: Your first job here is to determine which of the three regions of the piecewiselinear characteristic of the Zener is the one containing the operating point: we suggest you sketch a load line, but be very careful about the signs. Once you have determined where the operating point is, you can model the Zener in the circuit with a series combination of an independent voltage source and a resistor.
 2 years ago

NdeveR Group TitleBest ResponseYou've already chosen the best response.0
so far, i have only been able to solve for RL=2kohm, Vo is 8.6667 volts. if anyone could explain this one i'd appreciate it.
 2 years ago

nick67 Group TitleBest ResponseYou've already chosen the best response.5
dw:1348666679433:dw
 2 years ago

nick67 Group TitleBest ResponseYou've already chosen the best response.5
dw:1348667042917:dw
 2 years ago

nick67 Group TitleBest ResponseYou've already chosen the best response.5
dw:1348667163811:dw
 2 years ago

nick67 Group TitleBest ResponseYou've already chosen the best response.5
dw:1348667507556:dw
 2 years ago

Sparkle Group TitleBest ResponseYou've already chosen the best response.1
What about the last bit, minimum value of RL..Im getting it wrong.
 2 years ago

nick67 Group TitleBest ResponseYou've already chosen the best response.5
@Sparkle could you better explain your problem, pls :)
 2 years ago

dany Group TitleBest ResponseYou've already chosen the best response.0
Teh minimum value of RL is the value of RL when the voltage across the RL is equal to that of Vz
 2 years ago

yahya.aamir Group TitleBest ResponseYou've already chosen the best response.0
@nick67, I tried looking at the your explanation. But couldn't figure out the answer when the Zener diode is implemented. Could you please explain it again?
 2 years ago

nick67 Group TitleBest ResponseYou've already chosen the best response.5
@yahya.aamir Hi, you should separate DC and AC analysis, this way: dw:1349534424806:dw
 2 years ago

nick67 Group TitleBest ResponseYou've already chosen the best response.5
dw:1349534977332:dw
 2 years ago

yahya.aamir Group TitleBest ResponseYou've already chosen the best response.0
Thanks @nick67. I really appreciate it. :)
 2 years ago

nick67 Group TitleBest ResponseYou've already chosen the best response.5
you're welcome
 2 years ago

mahi1431 Group TitleBest ResponseYou've already chosen the best response.0
hey plz explain me clearly
 2 years ago

nick67 Group TitleBest ResponseYou've already chosen the best response.5
@Nurali could you post the question in a separate post ? I'm quite sure that Stefo should be very interested, too; he has big knowledge about FETs
 2 years ago

ammanjordan Group TitleBest ResponseYou've already chosen the best response.0
Can we have the results as results (Numbers)?
 one year ago

nick67 Group TitleBest ResponseYou've already chosen the best response.5
@ammanjordan from http://openstudy.com/codeofconduct : Give Help, Not Answers I will encourage and guide those needing help, and not just give them an answer
 one year ago

ammanjordan Group TitleBest ResponseYou've already chosen the best response.0
Thank nick67, solving the problem, i found the value of Vo for RL=ΚΩ, also, i found the same Vo when RL = 4ΚΩ. How i can find the relevants u0 when RL=2 and 4 ΚΩ?
 one year ago

ammanjordan Group TitleBest ResponseYou've already chosen the best response.0
Hi guys, can i have some method to find vo for RL= 2 and 4 ΚΩ. thanks.
 one year ago
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