Question

H3P4: H3P4: Diode Limiter


In the circuit shown there are two ideal diodes, two resistors, two DC voltage sources, and an AC voltage source.help plzzzzzzzzzz

Answer 1

If your circuit is the same as the one i've attached, then,
the maximum voltage that can appear at v is a positive V1.
the minimum voltage that can appear at v is a negative V2.
you'll get the current with the following equation:
I=Is(e^(Vd/0.026)-1)
where
Vd=voltage applied across the diode.
Is = saturation current.

Example:
if you have these values:
The resistors both have the resistance R=5.6kΩ. The voltage of the DC sources is V1=3.25V and V2=3.0V.

then
max v = 3.25
min v = -3.0
I @ D1 = 0.000178
1 @ D2 = 0.000268