v 20130925 2
C 40000 40000 0 0 0 title-A4.sym
C 48000 44500 1 270 0 resistor-2.sym
{
T 47600 44100 5 10 1 1 0 0 1
refdes=R3
T 47500 43800 5 10 1 1 0 0 1
value=6.8K
}
C 48000 46900 1 270 0 resistor-2.sym
{
T 48300 46500 5 10 1 1 0 0 1
refdes=Rout
T 48300 46200 5 10 1 1 0 0 1
value=4.7K
}
C 46400 44700 1 270 0 resistor-2.sym
{
T 46700 44300 5 10 1 1 0 0 1
refdes=R2
T 46700 44000 5 10 1 1 0 0 1
value=56K
}
C 46400 46700 1 270 0 resistor-2.sym
{
T 46300 46300 5 10 1 1 0 6 1
refdes=R1
T 46300 46200 5 10 1 1 180 0 1
value=100K
}
C 47200 43200 1 0 0 gnd-1.sym
N 46500 47000 48100 47000 4
N 46500 45800 46500 44700 4
N 44300 43700 44300 43500 4
N 44300 43500 48600 43500 4
N 48600 44600 48100 44600 4
N 46500 45100 47500 45100 4
C 42600 44300 1 0 0 gnd-1.sym
C 44500 45000 1 0 0 resistor-2.sym
{
T 44800 45250 5 10 1 1 0 0 1
refdes=Rin
T 44800 44800 5 10 1 1 0 0 1
value=1k
}
T 45300 40900 9 16 1 0 0 0 1
Common Emitter Transistor Amplifier
N 48100 46000 48100 45600 4
N 47800 45700 48100 45700 4
N 46900 45700 46900 45100 4
C 47100 47000 1 0 0 vcc-1.sym
{
T 47100 47000 5 10 0 0 0 0 1
netname=Vcc
}
C 42500 45800 1 0 0 vcc-1.sym
{
T 42500 45800 5 10 0 0 0 0 1
netname=Vcc
}
C 43000 44600 1 0 1 vdc-1.sym
{
T 42300 45250 5 10 0 1 0 6 1
refdes=V1
T 42300 45450 5 10 0 0 0 6 1
device=VOLTAGE_SOURCE
T 42300 45650 5 10 0 0 0 6 1
footprint=none
T 42300 45150 5 10 1 1 0 6 1
value=DC 12V
}
C 44000 43700 1 0 0 vac-1.sym
{
T 44700 44250 5 10 1 1 0 0 1
refdes=Vin
T 44700 44550 5 10 0 0 0 0 1
device=vac
T 44700 44750 5 10 0 0 0 0 1
footprint=none
T 44600 43950 5 10 1 1 0 0 1
value=AC 1V
}
N 44300 44900 44300 45100 4
T 44900 42400 9 10 1 0 0 0 1
3dB points are : 3KHz & 143KHz
C 47500 44600 1 0 0 npn-3.sym
{
T 48400 45100 5 10 0 0 0 0 1
device=NPN_TRANSISTOR
T 48400 45200 5 10 1 1 0 0 1
refdes=Q1
T 48400 44900 5 10 1 1 0 0 1
value=BC548
}
N 46500 47000 46500 46700 4
N 48100 47000 48100 46900 4
N 48100 44600 48100 44500 4
N 48600 44600 48600 44500 4
N 48100 43600 48100 43500 4
N 48600 43600 48600 43500 4
N 46500 43800 46500 43500 4
C 45400 44900 1 0 0 capacitor-1.sym
{
T 45600 45600 5 10 0 0 0 0 1
device=CAPACITOR
T 45700 45400 5 10 1 1 0 0 1
refdes=C1
T 45600 45800 5 10 0 0 0 0 1
symversion=0.1
T 45600 44700 5 10 1 1 0 0 1
value=100nF
}
C 46900 45500 1 0 0 capacitor-1.sym
{
T 47100 46200 5 10 0 0 0 0 1
device=CAPACITOR
T 46900 45800 5 10 1 1 0 0 1
refdes=C3
T 47100 46400 5 10 0 0 0 0 1
symversion=0.1
T 47500 45800 5 10 1 1 0 0 1
value=10pF
}
C 48800 43600 1 90 0 capacitor-1.sym
{
T 48100 43800 5 10 0 0 90 0 1
device=CAPACITOR
T 49000 44400 5 10 1 1 180 0 1
refdes=C2
T 47900 43800 5 10 0 0 90 0 1
symversion=0.1
T 48700 43700 5 10 1 1 0 0 1
value=1.0uF
}
T 44800 40400 9 10 1 0 0 0 1
bjt-amp-ce-1.sch
T 45300 40100 9 10 1 0 0 0 1
1
T 46300 40100 9 10 1 0 0 0 1
1
T 48600 40400 9 10 1 0 0 0 1
2015 - 04 - 17
T 48600 40100 9 10 1 0 0 0 1
M.S.Waters
N 44500 45100 44300 45100 4
T 40400 40400 9 10 1 0 0 0 3
This schematic can be simulated
using either NG-Spice or GNU-Cap
(last tested 2015-03-17).
C 40400 41500 1 0 0 spice-model-1.sym
{
T 40500 42200 5 10 0 1 0 0 1
device=model
T 40500 42100 5 10 1 1 0 0 1
refdes=A1
T 41700 41800 5 10 1 1 0 0 1
model-name=BC548
T 40900 41600 5 10 1 1 0 0 1
file=../../lib/models/bc548.mod
}
N 46300 45100 46500 45100 4