Hi
I have noticed that Transistor specs is not as versatile as it should be in regard to different biasing current or frequencies.It states specific operating points. 2N3903
For example;To arrive at a hfe of 50 the Ic=10 ma and Vce 1Vdc.Which to me is strange because I have not come across a Vce at 1volt unless it's in saturation.Perhaps I am not understanding the stats correctly.I am assuming that I must adjust the base and collector resistors to get this Hfe=50 ? Or the input impedance or hie,Ic=1ma dcv,f=1khz.Futhermore,is the 1 khz is use with the shorting the output?I noticed that certain inputs or outputs of the transistor the signal is feed into.
Also, is there a math calculation to determine the Ib quiescence point ,not the current follow thru the base resistors(Emitter grd, voltage divider input) but the one that comes out of the transistor base with out practical trials of measuring ?
I have noticed that Transistor specs is not as versatile as it should be in regard to different biasing current or frequencies.It states specific operating points. 2N3903
For example;To arrive at a hfe of 50 the Ic=10 ma and Vce 1Vdc.Which to me is strange because I have not come across a Vce at 1volt unless it's in saturation.Perhaps I am not understanding the stats correctly.I am assuming that I must adjust the base and collector resistors to get this Hfe=50 ? Or the input impedance or hie,Ic=1ma dcv,f=1khz.Futhermore,is the 1 khz is use with the shorting the output?I noticed that certain inputs or outputs of the transistor the signal is feed into.
Also, is there a math calculation to determine the Ib quiescence point ,not the current follow thru the base resistors(Emitter grd, voltage divider input) but the one that comes out of the transistor base with out practical trials of measuring ?