Hello all,
I am a Beginner to this field, these days i am studying voltage biased common emitter Transistor configuration. The book is showing a pic of this configuration and do not describes the name or number of the transistor. so if i want to build that circuit, how could i with the number missing for the transistor. and my multimeter offers hfe measuring ability. i put 2N3904 transistor and the meter showed 173 hfe of the transistor and the manual of my meter says that i shows shows hfe at 10uA base current with Vce=2.8v. Now i am damn! confused about Beta. can i change value of Beta according to my requirements? i know Beta is dc current gain and hfe is Ac current gain. i know how to use it in solving for dc analysis. But still Confused about it. do i have to use the Beta or hfe given in datasheet? that is only 2 or 3 values for specified Ic. i am confused about it. please make me clear.
Thanks
I am a Beginner to this field, these days i am studying voltage biased common emitter Transistor configuration. The book is showing a pic of this configuration and do not describes the name or number of the transistor. so if i want to build that circuit, how could i with the number missing for the transistor. and my multimeter offers hfe measuring ability. i put 2N3904 transistor and the meter showed 173 hfe of the transistor and the manual of my meter says that i shows shows hfe at 10uA base current with Vce=2.8v. Now i am damn! confused about Beta. can i change value of Beta according to my requirements? i know Beta is dc current gain and hfe is Ac current gain. i know how to use it in solving for dc analysis. But still Confused about it. do i have to use the Beta or hfe given in datasheet? that is only 2 or 3 values for specified Ic. i am confused about it. please make me clear.
Thanks