Hi everone

How deal with this circuits.

Consider circuit in
http://aliso142.jeeran.com/emily/image002.jpg​

which R1 = 100 W, R2 = 200 W and R3 = 300 W. Assume

that the diode is well characterized by a piecewise linear model in which the turn on voltage is​

0.7V.

How to find :-


a) Find the minimum Vs such that I2 not equal 0.

b) Calculate I1, I2 and Vx if Vs = 5 V.​

Thanks

 

Hello,

Do you mean R1=100 Watt or R1=100 Ohm etc. ?

Greetings,
Bertus

 

I mean 100 ohm .

 

Hi everone

How deal with this circuits.

Consider circuit in
http://aliso142.jeeran.com/emily/image002.jpg​

which R1 = 100 W, R2 = 200 W and R3 = 300 W. Assume

that the diode is well characterized by a piecewise linear model in which the turn on voltage is​

0.7V.

How to find :-


a) Find the minimum Vs such that I2 not equal 0.

b) Calculate I1, I2 and Vx if Vs = 5 V.​

Thanks

1. Assume the voltage on the diode is the minimum voltage that conducts current, ie. 0.7V. Calculate it all out.

2. Write a current node equation at Vx and solve it.

If you have problems, show what you got and we'll point out how to fix it.