SneaKSz
Member
Hello all,
I'm a little bit confused about finding the output resistance when using the hybrid pi model en taking ro into account :
this is the ac equivalent :
**broken link removed**
I don't understand why the currents ( I1 and I2 dIb) are drawn in that direction?
And also a guy (uart,https://www.physicsforums.com/showthread.php?t=635192) says Vbe=0 ? won't there be a voltage drop when across Rpi?
Hopefully you guys can point me in the right direction.
Kind regards
I'm a little bit confused about finding the output resistance when using the hybrid pi model en taking ro into account :
this is the ac equivalent :
**broken link removed**
I don't understand why the currents ( I1 and I2 dIb) are drawn in that direction?
And also a guy (uart,https://www.physicsforums.com/showthread.php?t=635192) says Vbe=0 ? won't there be a voltage drop when across Rpi?
Hopefully you guys can point me in the right direction.
Kind regards