When it's saturated, the collector current is not HFE\$h_{FE}\$ times the base current anymore. It's less, how much, it depends on the rest of the circuit (I'm talking about the simplest model you can think of). In saturation, the VCE\$V_{CE}\$ voltage can be considered more or less constant and you can call it VCEsat\$V_{CEsat}\$, let's say around 0.2V\$0.2\mathrm V\$. TYour BJT is saturated when both its BE and BC junctions are active. That limits the Ic\$I_C\$ current to less than Ib*HFE\$I_B h_{FE}\$ and pins the VCE\$V_{CE}\$ voltage drop to VCEsat\$V_{CEsat}\$.
Why do you care of having your BJT in open state if there's no current going thruthrough it? it'sIt's like having your tap open with no water in the pipe :D
When it's saturated, the collector current is not HFE times the base current anymore. It's less, how much, it depends on the rest of the circuit (I'm talking about the simplest model you can think of). In saturation, the VCE voltage can be considered more or less constant and you can call it VCEsat, let's say around 0.2V. TYour BJT is saturated when both its BE and BC junctions are active. That limits the Ic current to less than Ib*HFE and pins the VCE voltage drop to VCEsat.
Why do you care of having your BJT in open state if there's no current going thru it? it's like having your tap open with no water in the pipe :D
When it's saturated, the collector current is not \$h_{FE}\$ times the base current anymore. It's less, how much, it depends on the rest of the circuit (I'm talking about the simplest model you can think of). In saturation, the \$V_{CE}\$ voltage can be considered more or less constant and you can call it \$V_{CEsat}\$, let's say around \$0.2\mathrm V\$. TYour BJT is saturated when both its BE and BC junctions are active. That limits the \$I_C\$ current to less than \$I_B h_{FE}\$ and pins the \$V_{CE}\$ voltage drop to \$V_{CEsat}\$.
Why do you care of having your BJT in open state if there's no current going through it? It's like having your tap open with no water in the pipe :D
When it's saturated, the collector current is not HFE times the base current anymore. It's less, how much, it depends on the rest of the circuit (I'm talking about the simplest model you can think of). In saturation, the VCE voltage can be considered more or less constant and you can call it VCEsat, let's say around 0.2V. TYour BJT is saturated when both its BE and BC junctions are active. That limits the Ic current to less than Ib*HFE and pins the VCE voltage drop to VCEsat.
Why do you care of having your BJT in open state if there's no current going thru it? it's like having your tap open with no water in the pipe :D