[Designing feedback amplifier]

circuit is given.....problem is designing the circuit to given :
A_v1=2,
A_v2=2

Given data is;
R_L=10K (R_L=R_E+R_F)
f_L=500hz
h_ie=4.5K
h_fe=240
V_CEQ1=V_CEQ2=5V
I_CQ=2mA

For any other data, parameters of BC147A can be used.

Requirement
To calc. the resistor and capacitor values to get reqd. gain.
(A_v=A_v1*A_v2)

V_CC has to be taken apropriately.
(Frequency generator source resistance is 50ohms)

[help! transistor as diode]

Hi Vishu,
Simply connect the base of the transistor to its collector. Do not exceed the reverse-biased voltage rating of its base-emitter junction which is only 5V to 7V for silicon transistors.

isnt it possible to use the base-collector diode as well. how does that work? also, in case of the base emitter diode, how do the negative charge carriers of collector take part in current flow. ???

[help! transistor as diode]

i need to know how to use 'transistor as a diode'......and its applications. i know of transistor as a switch, but as diode.....dos'nt make sense, unless its the same thing! the problem is, someone else has been asked to speak on 'transistor as switch'! seminar's in 10 hours ! HELP PLEASE!! :o :'(