Hello,
I have a doubt in the section Volume III - Semiconductors » BIPOLAR JUNCTION TRANSISTORS » Biasing techniques.
The figure Impractical base battery bias where a dc battery is in series with the AC signal makes perfect sense to me. DC = 2.3V and AC = 1.5 pktopk. I understand how the combined base biasing is varying from 0.8 to 3.8.
But when the battery is replaced with a voltage divider in the figure Voltage divider bias DC voltage drop across the dividing resistor and the AC signal are in parallel separated by a capacitor. I could not understand how this arrangement can have the same effect as the earlier one.
Could any of you please help? I am learning electronics on my own and I don't know any electronics expert to clear this doubt. It would be great if any one here can help.
http://www.allaboutcircuits.com/vol_3/chpt_4/9.html
Manulal
I have a doubt in the section Volume III - Semiconductors » BIPOLAR JUNCTION TRANSISTORS » Biasing techniques.
The figure Impractical base battery bias where a dc battery is in series with the AC signal makes perfect sense to me. DC = 2.3V and AC = 1.5 pktopk. I understand how the combined base biasing is varying from 0.8 to 3.8.
But when the battery is replaced with a voltage divider in the figure Voltage divider bias DC voltage drop across the dividing resistor and the AC signal are in parallel separated by a capacitor. I could not understand how this arrangement can have the same effect as the earlier one.
Could any of you please help? I am learning electronics on my own and I don't know any electronics expert to clear this doubt. It would be great if any one here can help.
http://www.allaboutcircuits.com/vol_3/chpt_4/9.html
Manulal