Topic 2: Transistor by Philip Low https://padlet.com/chortong_tp/j0nsu0p7iwj7 Double click within the embedded Padlet to create post en-us 2019-04-02 09:55:51 UTC 2020-05-25 12:33:03 UTC hello@padlet.com If the current gain in a common emitter amplifier is 125 and the collector current is 500mA, what is the base current? https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/361348641 Tutor comment:
What is the relationship of IB, IC when amp is operating at the active region?
refer to page 27 of lecture notes.]]> 2019-05-18 01:19:21 UTC https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/361348641 If a common emitter (CE) amplifier is connected to a load, and if the load resistance reduces, why its voltage gain reduces too? https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/361349069 Tutor comment:
with load, Avl=-hfe(Rc//RL)/hie
no load, Av=-hfeRc/hie
so Avl gain is lower than Av, 

]]> 2019-05-18 01:25:58 UTC https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/361349069 https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/361480497 Why do class A amplifier have lower power efficiency than class B amplifier???

Tutor comment:
Where is the Q-pt of class A and class B
Which amp draw more current when there is no AC input signal? 
class A or class B ?
Power= VI]]> 2019-05-19 12:15:59 UTC https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/361480497 Multistage Amplifier kuvilan18 https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/543484735 Next Lecture could you explain on how the multi stage amplifier Works. Its quite hard to analyse.
Thank you!

]]> 2020-05-01 05:19:26 UTC https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/543484735 Do we need to know about oscillators? as the video didn't cover about oscillators https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/556440106 2020-05-07 05:08:36 UTC https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/556440106 for the transformer coupling, why the h https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/578051099 2020-05-17 16:29:52 UTC https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/578051099 1905736c1 https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/592860886 2020-05-25 12:33:03 UTC https://padlet.com/chortong_tp/j0nsu0p7iwj7/wish/592860886