MHB Electronics Engineering: Determine Voltage in Circuit w/ Practical Model

[paulmdrdo1]

Determine the voltage with respect to the ground at each point in figure. Assume the practical model.

View attachment 1846

guys please help me solve this circuit. anybody in electronics engineering help.

 

[chisigma]

Determine the voltage with respect to the ground at each point in figure. Assume the practical model.

View attachment 1846

guys please help me solve this circuit. anybody in electronics engineering help.

Both the diodes are in on state and in this condition the voltage drop on them is $V_{d} \sim .7 V$ no matter which is the current... Kind regards $\chi$ $\sigma$

 

[paulmdrdo1]

I don't understand. the question is asking for the voltage with respect to the ground.

 

[I like Serena]

I don't understand. the question is asking for the voltage with respect to the ground.

Let's start with point A.
There is a voltage source between ground and point A.
Its voltage is 25 V.
Therefore the voltage at point A is +25 V.

 

[paulmdrdo1]

point B is 24.3v. because the voltage drop across the diode is 0.7v so 25-0.7v=24.3 v

but i don't know how to determine the voltage at point c.

 

[I like Serena]

point B is 24.3v. because the voltage drop across the diode is 0.7v so 25-0.7v=24.3 v

Good!

but i don't know how to determine the voltage at point c.

Let's do point D first then...

 

[paulmdrdo1]

but how?

 

[I like Serena]

but how?

There is a voltage source between ground and point D that determines its voltage.