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• #COLLECTOR CURRENT VS VCE PC1D HOW TO#

What will be the Q-point if zero signal base current is 20μA and β= 50? Question – As the circuit shown below, (i) if Vcc = 12V and Rc = 6kΩ, draw the d.c load line.

#COLLECTOR CURRENT VS VCE PC1D HOW TO#

Let see how to find an operating point with an example or problem. Hope you know well about operating point. So when we draw this load line, a point at which load line intersecting with Ib is called the operating point or q-point. So now we already find two points( A and B) of this load line. For finding intersecting points of load line with X-axis and Y-axis we take one by one Ic=0 and then Vce=0.

The output characteristics of this transistor show graph between Ic and Vce.

For general transistor biasing circuit, output circuit equation is How to find an operating point?įor finding operating point first we have to find load line points( A and B ) on Ic and Vce. For operating point, we have to find load line. This point is also called as Q point or quiescent (Silent) point because it is a point of output characteristics when a transistor is silent i.e. It is called the operating point because the variations of Ic and Vce take place at this point when an input signal is applied. “ The zero signal values of collector current (Ic) and collector-base voltage (Vcb) are known as operating point for that transistor”. So if we want to call what is an operating point? in one line so we can say that, The operating point is a point which we can obtain from the value of collector current Ic and collector base voltage Vcb at no input signal is applied to the transistor. The operating point is a specific point on transistor output characteristics at which we get good biasing for that transistor. Here we also know how we can find Q point of BJT transistor. Here we discuss what is the operating point of transistor? or Q point of a transistor?.