v 20130925 2
C 40000 40000 0 0 0 title-A4.sym
C 47100 42900 1 0 0 gnd-1.sym
T 46600 40900 9 12 1 0 0 0 1
Transistor DC Level Shifter
T 49350 40450 9 10 1 0 0 4 1
2015 - 04 - 14
C 40550 40500 1 0 0 spice-model-1.sym
{
T 40650 41200 5 10 0 1 0 0 1
device=model
T 40650 41100 5 10 1 1 0 0 1
refdes=A1
T 41850 40800 5 10 1 1 0 0 1
model-name=BC548
T 41050 40600 5 10 1 1 0 0 1
file=../../lib/models/bc548.mod
}
C 43450 44100 1 0 0 gnd-1.sym
C 43850 44600 1 0 1 vdc-1.sym
{
T 42750 45250 5 10 1 1 0 0 1
refdes=Vcc
T 43150 45450 5 10 0 0 0 6 1
device=VOLTAGE_SOURCE
T 43150 45650 5 10 0 0 0 6 1
footprint=none
T 42650 44950 5 10 1 1 0 0 1
value=DC 5V
}
C 43350 46000 1 0 0 vcc-1.sym
C 47000 46000 1 0 0 vcc-1.sym
C 47300 44100 1 90 0 resistor-2.sym
{
T 46950 44500 5 10 0 0 90 0 1
device=RESISTOR
T 47400 44600 5 10 1 1 0 0 1
refdes=R3
T 47400 44400 5 10 1 1 0 0 1
value=1.2K
}
C 45200 46000 1 0 0 vcc-1.sym
C 46400 45400 1 0 1 resistor-2.sym
{
T 46000 45750 5 10 0 0 180 2 1
device=RESISTOR
T 45600 45700 5 10 1 1 0 0 1
refdes=R1
T 46000 45700 5 10 1 1 0 0 1
value=220K
}
N 43550 46000 43550 45800 4
N 43550 44600 43550 44400 4
C 46600 45000 1 0 0 npn-3.sym
{
T 47500 45500 5 10 0 0 0 0 1
device=NPN_TRANSISTOR
T 47500 45500 5 10 1 1 0 0 1
refdes=Q1
T 47500 45300 5 10 1 1 0 0 1
value=BC548
}
C 47100 44100 1 270 0 resistor-2.sym
{
T 47450 43700 5 10 0 0 270 0 1
device=RESISTOR
T 47400 43700 5 10 1 1 0 0 1
refdes=R4
T 47400 43500 5 10 1 1 0 0 1
value=3.9K
}
C 46300 44100 1 270 0 voltage-3.sym
{
T 47000 43900 5 8 0 0 270 0 1
device=VOLTAGE_SOURCE
T 45800 43600 5 10 1 1 0 0 1
refdes=Vin
T 45600 43400 5 10 1 1 0 0 1
value=DC 0.5V
}
C 46400 42900 1 0 0 gnd-1.sym
C 46600 45200 1 90 1 resistor-2.sym
{
T 46250 44800 5 10 0 0 270 2 1
device=RESISTOR
T 46300 44800 5 10 1 1 0 6 1
refdes=R2
T 46300 44600 5 10 1 1 0 6 1
value=4.7K
}
N 46500 45500 46500 45200 4
N 46400 45500 46600 45500 4
N 45400 46000 45400 45500 4
N 45400 45500 45500 45500 4
N 47800 44100 47200 44100 4
{
T 47900 44000 5 10 1 1 0 0 1
netname=Vout
}
N 46500 44300 46500 44100 4
T 48700 40100 9 10 1 0 0 0 1
Mike Waters
T 45200 40400 9 10 1 0 0 0 1
bjt-lvl-shftr.sch
T 45300 40100 9 10 1 0 0 0 1
1
T 46300 40100 9 10 1 0 0 0 1
1