shaiqbashir Posted November 4, 2006 Report Share Posted November 4, 2006 HI guys!well! i have got two question with me. Some forumlae i know and some i dont! please help me in solving it.here is the 1st question:There is a single stage class A amplifier which has Vcc =20VVceq = 10VIcq = 600 mARL = 16ohmsIp=300mA.We have to find:1) DC Input Power2) DC Power Loss in load resistor 3) AC power developed across load resistor4) DC power delivered to the transistor5) DC power wasted in transistor6) OVerall efficiencyokz, now i know how to find (1) and (6). What should i do for remaining. Following im wrtitng what i think about them. Please tell me if im wrong or correct. If im wrong then what is the correct formula:2) P = (Icq^2) RL3) P=0.5 Icq x Vceq4) dont know5) dont knowPlease tell me those formulae which i donot know and also make those confirmed which i have written above.OKz here is another question to be considered:Determine the following values for the class A amplifier when operated with maximum possible output signal:1)Min transistor power rating2) AC output power3) Efficiency4) Maximum Load Powerokz so here is what i think about these formulae:1) this is the power at Quiscent point. that is P = Icq x Vceqwhere Icq is simply the Ic of the circuit and Vceq is the Vcc/22) that would be P = 0.5 Icq x Vceq 3) Efficiency = 0.5 Icq x Vceq/ Vcc x Icq4) for max load power, it think i should use this formula :P = (Vc^2)/RLwhere i can find Vc = Vcc - Ic Rcwhere RL is the capacitively coupled Load Resistor.Please tell me that have i written the above formulae correctly or not. If not then what are the correct formulae.I shall be thankful to u for this act of kindness.take carez!Good Bye! Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.