Diode Circuit Analysis | Diode Circuit Problems

Circuit 1:Calculate Vo and current in the given diode circuit.

Vo=Vdd-V(diode)=10-0.7

Vo=9.3V

Apply KVL for current

-10+0.7+I*1000=0

I=9.3mA

Circuit 2: Calculate Vo and current in the given diode circuit.

 

Apply KVL

-10+1000I+0.7+1000I=0

2000I=9.3

I=4.65mA

Use Ohm's Law for Vo

Vo=I*1000

Vo=4.65V

Circuit 3:

Calculate Vo

 

Circuit 4: Calculate iD.

A simple diode circuit is given. Solve it with the help of Kirchoff's voltage law. Apply KVL to first loop. 

Apply KVL to the second loop. 

Solve for i1 and i2. Add equation 1 and equation 2, to get the value of i2.

Finally substitute i2 in equation 1 and figure out the value of i1. 

i1-i2 is the current flowing through the diode that is iD. So, iD = 0.96A

Circuit 5:

Calculate voltage across 20k resistor