差动放大电路静态工作点计算?
Vcc=+12V,Vss=-12V,Ube=0.7V;
Ub=(Vcc-Vss)*R2/(R1+R2);
Ub=Ube+I3*Re;---> 得 I3;I3=I1+I2;调节Rp,使 I1=I2;
Uc1=Vcc - I1*Rc;Uc2=Vcc - I2*Rc;
Ub1=Vi1 = -Ib1*R = -R*I1/β;Ub2=Vi2 = -Ib2*R = -R*I2/β;
Ue1=Ub1 - Ube;Ue2=Ub2 - Ube;Ue3=I3*Re + Uss;
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