# Electronics circuits

#### paulmdrdo

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

#### chisigma

##### Well-known member
Determine the voltage with respect to the ground at each point in figure. Assume the practical model.

View attachment 1846

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

$\chi$ $\sigma$

#### paulmdrdo

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

#### Klaas van Aarsen

##### MHB Seeker
Staff member
I don't understand. the question is asking for the voltage with respect to the ground.
There is a voltage source between ground and point A.
Its voltage is 25 V.
Therefore the voltage at point A is +25 V.

#### paulmdrdo

##### Active member
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.

#### Klaas van Aarsen

##### MHB Seeker
Staff member
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...

but how?

#### Klaas van Aarsen

##### MHB Seeker
Staff member
There is a voltage source between ground and point D that determines its voltage.