Both diodes will be on ONLY if they are exactly the same, otherwise only one would have most of the current through it and the other very little if any current.I am not sure as both are having same diodes and resistance.
...and the two currents will be nearly the same, about 1.55 mA.I disagree with Kubeek. Even if the Vf of the two diodes are drastically different, there will be current in both series resistors.
Both diodes will conduct current, but D1 will conduct much more than D2.
Wow! Pulling my posts up from more than 3 years ago? Impressive!View attachment 87862
referring to this circuit, would both diode turn ON?
Pretty close agreement with my sim where the two diode currents are 125μA and 817μA..................
That's the way I see it. D2 is going to carry about a tenth of the total current because diodes have performance curves.
Diodes current are different , but the voltage across both diodes will be the same?Pretty close agreement with my sim where the two diode currents are 125μA and 817μA.
In the real world, D1 would show a voltage of 0.65 volts at 0.9 ma of current.
then the voltage across D2 is 0.58 volts
You have to read the answers.Diodes current are different , but the voltage across both diodes will be the same?
No. The voltage across a diode is a logarithmic function of the current.Diodes current are different , but the voltage across both diodes will be the same?
by Jake Hertz
by Duane Benson
by Jake Hertz
by Duane Benson