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i wantto know the outp[ut when amplifier is operated in commom mode,,i tried so many times with different input but i got output voltage as 0 volt.can you suggest me the way i calculate cmrr value.
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the image i attached is the differential mode,,where output voltage is 0.1...
right boutput means i want frequency response between 20 hz-2o khz and a perfect gain in time domain......
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i want to desifn an amlifier which amplifies audio signal between 20 hz -20 khz
what is the purpose of connecting resistor of 47 k between base and ground...
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whwn i connected 47 k resistor between base and ground ,output is as shown ,,,.
Re: Darlington amplifier
now ia m getting the output,,will you tell me,how u come to know about 1 nf capacitor between bjt0 base and ground..will yuu give me your concepts ,how you calculate all these values..
will you suggest me the basic steps for design so that i could get right output both in frequency as well as in time domain..i think i am doing some mistake in calculation..
i am not getting output in frequency domain..
component values are
R7=100 OHM C0=148.2 MICROFARAD
R1=240 KILOOHM R4=2.2 KILOOHM
R6=1.6 KILOHM R10=681 OHM
C4=646.78 MICROFARAD
Can you suggest me the way ,,input and outpur waveform in time domain are not in phase..
Re: Darlington amplifier
I want to design this amplifier such that i get a frequency response from 20 Hz to 20kHz like a band pass filter. How should i decide it then?
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okay, i am getting the output in time domain as well as in frequency domain ,with voltage gain nearly...
Re: Darlington amplifier
yah ,i have done all these suggested by you,still not getting output,will you please suggest me values for RX,CX,RY,CY....
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yah ,i have done all these suggested by you,still not getting output,will you please suggest me values for RX,CX,RY,CY....
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Re: Darlington amplifier
[url=http://obrazki.elektroda.pl/43_1338985861.jpg][img]
I corrected the change in Bode Plot and did simulation again and I have attached the frequency response. Do u know how to design for the capacitance values for given lower and upper cut-off frequencies??
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how to design the circuit,m not getting the frequency response ,,i think there is something wrong in calculation in calculation of capacitance,,however i have calculate resisistance value as R0=147 mega ohm., R5=681 OHM; R1=17.8 mega ohm;R2=680 ohm;C0= C1=10 microfarad;VCC=27 volt.
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