Class A amplifiers formulae help

[shaiqbashir]

HI guys!

well! i have got a question with me. Some forumlae i know and some i dont! please help me in solving it.

There is a single stage class A amplifier which has

Vcc =20V
Vceq = 10V
Icq = 600 mA
RL = 16ohms
Ip=300mA.

We have to find:

1) DC Input Power
2) DC Power Loss in load resistor
3) AC power developed across load resistor
4) DC power delivered to the transistor
5) DC power wasted in transistor
6) OVerall efficiency

okz, now i know how to find (1) and (6). What should i do for remaining. Following I am wrtitng what i think about them. Please tell me if I am wrong or correct. If I am wrong then what is the correct formula:

2) P = (Icq^2) RL
3) P=0.5 Icq x Vceq
4) don't know
5) don't know

Please tell me those formulae which i don't know and also make those confirmed which i have written above.

i shall be thankful to u for this act of kindness.

Good Bye!

 

[berkeman]

Do you have a schematic of this amplifier? You can bias up class A amps in different ways to trade off THD versus quiescent power dissipation. Without more info, I don't think you can calculate several of the quantities you are asking for.

 

[shaiqbashir]

Well! for the 1st question, i don't have a schematic. i have written that as it came to me. It is just written that it is a single stage class A amplifier. So please be straight forward.

 

[NoTime]

5) DC power wasted in transistor

I remember this as being thought of as the power consumed with no input signal supplied.
This is not a clear concept due to the fact that "wasted" and "efficiency" vary with the input signal.