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Re: don't know how to estimate the dc voltage at collector o
well, i made a try-error solution using the spice simulation, and the bias Ic must be equal to 25uA to achieve a dc voltage of 13V. however, it's a too low bias current, so it's not a good solution..
Re: don't know how to estimate the dc voltage at collector o
how do u calculated that?? with the datasheet??? Vce goes only from 0 - 5V...
and how will i change ib without changing ic??? I thought in active mode ib = ic/(B+1)...
Re: don't know how to estimate the dc voltage at collector o
alright, but according the simulation the value of dc at colector of q4 is 22V!!
oh sorry!!! 25-5 = 20V!! that's the correct value... thakx!
Added after 8 minutes:
fine. now, as u can see, the "ideal dc voltage" would be about 13V...
hi
i am an engineering electronics student and i was trying to design my own power amp. It's not about to be tested on a protoboard... it's just for simulating...
well, i'm having trouble with dc levels because i don't know how to estimate the dc voltage at collector of q4. Q4 and Q3 form a bjt...
Hey, I'm a 3rd year student of electronics and I need help to design a circuit that receives a sinal V0 with respect to the ground and outputs:
1) V0 in pin A and 0 (zero) in pin B, if V0>=0;
2) 0 (zero) in pin A and V0 in pin B, if V0<0;
Any ideas how to implement this circuit?
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