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drawTransistors.py
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drawTransistors.py
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#!/usr/bin/python
import math
import inkscapeMadeEasy_Base as inkBase
import inkscapeMadeEasy_Draw as inkDraw
class transistor(inkBase.inkscapeMadeEasy):
# ---------------------------------------------
# bipolar junction transistors (NPN and PNP)
def drawTransistorBJT(self, parent, position=[0, 0], angleDeg=0, label='BJT', mirrorEC=False, drawBCEtags=False, drawEnvelope=False, transistorType='NPN', flagPhototransistor=False, drawVCE=False,
drawVCB=False, drawVBE=False, drawICarrow=False, drawIBarrow=False, drawIEarrow=False, VCEname='V_{ce}', VCBname='V_{cb}', VBEname='V_{be}', ICname='i_c', IBname='i_b',
IEname='i_e'):
""" draws BJT transisitor
parent: parent object
label: label of the object (it can be repeated)
position: position [x,y]
angleDeg: orientation (default: 0.0)
mirrorED: invert E and C terminals (default: False (C above, E below)
drawBCEtags: indentify BCE terminals (default: False)
drawEnvelope: draw circular envelope (default:False)
transistorType: type of Bipolar junction transistor values: 'NPN' (Default) 'PNP'
flagPhototransistor: creates a phototransistor (default: False)
drawVCE,drawVCB,drawVBE: draw voltage drop annotations (default: False)
drawICarrow,drawIBarrow,drawIEarrow: draw current annotations (default: False)
VCEname,VCBname,VBEname: voltage drop annotation text
ICname,IBname,IEname: current annotation text
"""
if transistorType == 'NPN':
isNPN = True
else:
isNPN = False
if mirrorEC:
Yfactor = -1
else:
Yfactor = 1
group = self.createGroup(parent, label)
elem = self.createGroup(group, label)
colorBlack = inkDraw.color.defined('black')
if not flagPhototransistor:
inkDraw.line.relCoords(elem, [[28, 0]], [position[0] - 10, position[1]]) # base
else: # light arrows
arrow = self.createGroup(elem)
inkDraw.line.relCoords(arrow, [[7, 0]], position)
inkDraw.line.relCoords(arrow, [[1.5, -1.5], [-1.5, -1.5]], [position[0] + 5.5, position[1] + 1.5])
self.rotateElement(arrow, position, -30)
self.moveElement(arrow, [4, -7])
arrow = self.createGroup(elem)
inkDraw.line.relCoords(arrow, [[7, 0]], position)
inkDraw.line.relCoords(arrow, [[1.5, -1.5], [-1.5, -1.5]], [position[0] + 5.5, position[1] + 1.5])
self.rotateElement(arrow, position, -30)
self.moveElement(arrow, [4, 0])
inkDraw.line.relCoords(elem, [[0, 12]], [position[0] + 17.5, position[1] - 6], lineStyle=inkDraw.lineStyle.setSimpleBlack(lineWidth=2)) # vertical junction line
# build emitter arrow marker
L_arrow = 2.5
markerBJT = inkDraw.marker.createMarker(self, 'BJTArrow', 'M 0,0 l -%f,%f l 0,-%f z' % (L_arrow * 1.2, L_arrow / 2.0, L_arrow), RenameMode=1, strokeColor=colorBlack, fillColor=colorBlack,
lineWidth=0.6)
lineStyleArrow = inkDraw.lineStyle.set(lineWidth=1, lineColor=colorBlack, markerEnd=markerBJT)
# draw emitter and collector terminals
if isNPN:
inkDraw.line.relCoords(elem, [[7, -Yfactor * 5], [0, -Yfactor * 17]], [position[0] + 18, position[1] - Yfactor * 3]) # collector
inkDraw.line.relCoords(elem, [[7, Yfactor * 5]], [position[0] + 18, position[1] + Yfactor * 3], lineStyle=lineStyleArrow) # emitter arrow
inkDraw.line.relCoords(elem, [[0, Yfactor * 17]], [position[0] + 25, position[1] + Yfactor * 8]) # emitter
else:
inkDraw.line.relCoords(elem, [[7, -Yfactor * 5], [0, -Yfactor * 17]], [position[0] + 18, position[1] - Yfactor * 3]) # collector
inkDraw.line.relCoords(elem, [[-7, -Yfactor * 5]], [position[0] + 25, position[1] + Yfactor * 8], lineStyle=lineStyleArrow) # emitter arrow
inkDraw.line.relCoords(elem, [[0, Yfactor * 17]], [position[0] + 25, position[1] + Yfactor * 8]) # emitter
if drawEnvelope:
inkDraw.circle.centerRadius(elem, centerPoint=[position[0] + 22, position[1]], radius=10, offset=[0, 0], label='circle')
if drawBCEtags:
pos_Ctag = [position[0] + 22.5, position[1] - Yfactor * 12.5]
pos_Etag = [position[0] + 22.5, position[1] + Yfactor * 12.5]
if not flagPhototransistor:
tB = inkDraw.text.latex(self, group, 'B', position=[position[0] + 10, position[1] - 3], fontSize=self.fontSizeSmall / 1.5, refPoint='cc', preambleFile=self.preambleFile,
angleDeg=-angleDeg)
tC = inkDraw.text.latex(self, group, 'C', position=pos_Ctag, fontSize=self.fontSizeSmall / 1.5, refPoint='cc', preambleFile=self.preambleFile, angleDeg=-angleDeg)
tE = inkDraw.text.latex(self, group, 'E', position=pos_Etag, fontSize=self.fontSizeSmall / 1.5, refPoint='cc', preambleFile=self.preambleFile, angleDeg=-angleDeg)
if angleDeg != 0:
self.rotateElement(group, position, angleDeg)
# draw voltage drops
if drawVCE:
pos = [position[0] + 25 + 10, position[1]]
self.drawVoltArrowSimple(group, pos, name=VCEname, color=self.voltageColor, angleDeg=90, invertArrows=mirrorEC, size=20.0, invertCurvatureDirection=False, extraAngleText=angleDeg)
if drawVCB:
pos = [position[0] + 12, position[1] - Yfactor * 12]
ang = Yfactor * 45
self.drawVoltArrowSimple(group, pos, name=VCBname, color=self.voltageColor, angleDeg=ang, invertArrows=False, size=20.0, invertCurvatureDirection=not mirrorEC, extraAngleText=angleDeg)
if drawVBE:
pos = [position[0] + 12, position[1] + Yfactor * 12]
ang = -Yfactor * 45
self.drawVoltArrowSimple(group, pos, name=VBEname, color=self.voltageColor, angleDeg=ang, invertArrows=True, size=20.0, invertCurvatureDirection=mirrorEC, extraAngleText=angleDeg)
# draw terminal currents
if drawICarrow:
self.drawCurrArrowSimple(group, [position[0] + 30, position[1] - Yfactor * 17.5], name=ICname, color=self.currentColor, angleDeg=90, invertArrows=mirrorEC ^ isNPN, size=7.5,
invertTextSide=True, extraAngleText=angleDeg)
if drawIBarrow:
self.drawCurrArrowSimple(group, [position[0] + 7.5 - 10, position[1] - 5], name=IBname, color=self.currentColor, angleDeg=0, invertArrows=not isNPN, size=7.5, invertTextSide=False,
extraAngleText=angleDeg)
if drawIEarrow:
self.drawCurrArrowSimple(group, [position[0] + 30, position[1] + Yfactor * 17.5], name=IEname, color=self.currentColor, angleDeg=90, invertArrows=mirrorEC ^ isNPN, size=7.5,
invertTextSide=True, extraAngleText=angleDeg)
return group
# ---------------------------------------------
# metal-oxide-semiconductor field-effect transistor (N and P channel)
def drawTransistorMOSFET(self, parent, position=[0, 0], angleDeg=0, label='MOSFET', mirrorSD=False, drawSGDtags=False, drawEnvelope=False, modeType='MOSFET-E', gateType='P_gate', is4terminal=True,
bodyDiode=False, drawVGS=False, drawVDS=False, drawVDG=False, drawIDarrow=False, drawISarrow=False, drawIGarrow=False, VGSname='V_{GS}', VDSname='V_{SD}',
VDGname='V_{GD}', IDname='i_d', ISname='i_s', IGname='i_g'):
""" draws a general Field Effect transistor
parent: parent object
label: label of the object (it can be repeated)
position: position [x,y]
angleDeg: orientation (default: 0.0)
mirrorSD: invert S and D terminals (default: False (D above, S below)
drawSGDtags: indentify SGD terminals (default: False)
drawEnvelope: draw circular envelope (default:False)
modeType: type of field effect transistor: 'MOSFET-E' (Default) 'MOSFET_P'
gateType: type of gate: 'P_gate', 'N_gate'
is3terminal: 3 (True, Default) or 4 (False) terminals transistor
bodyDiode: draws body diode (MOSFET-E only)
drawVGS,drawVDS,drawVDG: draw voltage drop annotations (default: False)
drawIDarrow,drawISarrow,drawIGarrow: draw current annotations (default: False)
VGSname,VDSname,VDGname: voltage drop annotation text
IDname,ISname,IGname: current annotation text
"""
if gateType == 'P_gate':
isNgate = False
else:
isNgate = True
if modeType == 'MOSFET-E':
isEmode = True
else:
isEmode = False
group = self.createGroup(parent, label)
elem = self.createGroup(group, label)
colorBlack = inkDraw.color.defined('black')
L_arrow = 2.0
markerMOS = inkDraw.marker.createMarker(self, 'MOSArrow', 'M -0.3,0 l -%f,%f l 0,-%f z' % (L_arrow * 1.2, L_arrow / 2.0, L_arrow), RenameMode=1, strokeColor=colorBlack, fillColor=colorBlack,
lineWidth=0.6)
lineStyleArrow = inkDraw.lineStyle.set(lineWidth=0.7, lineColor=colorBlack, markerEnd=markerMOS)
lineStyleFine = inkDraw.lineStyle.set(lineWidth=0.7, lineColor=colorBlack)
inkDraw.line.relCoords(elem, [[0, 11], [-28,0]], [position[0] + 17, position[1] - 6]) # gate
inkDraw.line.relCoords(elem, [[0, -19.6]], [position[0] + 24, position[1] - 5.4]) # drain line
inkDraw.line.relCoords(elem, [[5, 0]], [position[0] + 19, position[1] - 5.25], lineStyle=lineStyleFine) # drain line
inkDraw.line.relCoords(elem, [[0, 19.6]], [position[0] + 24, position[1] + 5.4]) # source line
inkDraw.line.relCoords(elem, [[5, 0]], [position[0] + 19, position[1] + 5.25], lineStyle=lineStyleFine) # source line
if is4terminal:
inkDraw.line.relCoords(elem, [[20, 0]], [position[0] + 24, position[1]]) # source line
else:
inkDraw.line.relCoords(elem, [[0, -5.25]], [position[0] + 24, position[1] + 5.25], lineStyle=lineStyleFine) # source line
inkDraw.circle.centerRadius(elem, [position[0] + 24, position[1] + 5.25], radius=0.4, offset=[0, 0], label='circle') # source dot
if isNgate:
inkDraw.line.relCoords(elem, [[-5, 0]], [position[0] + 24, position[1] + 0], lineStyle=lineStyleArrow) # horizontal arrow line
else:
inkDraw.line.relCoords(elem, [[5, 0]], [position[0] + 19, position[1] + 0], lineStyle=lineStyleArrow) # horizontal arrow line
if bodyDiode and isEmode and not is4terminal:
inkDraw.circle.centerRadius(elem, [position[0] + 24, position[1] - 5.25], radius=0.4, offset=[0, 0], label='circle') # diode cathode dot
inkDraw.line.relCoords(elem, [[4, 0], [0, 3.75]], [position[0] + 24, position[1] - 5.25], lineStyle=lineStyleFine) # diode cathode
inkDraw.line.relCoords(elem, [[4, 0], [0, -3.75]], [position[0] + 24, position[1] + 5.25], lineStyle=lineStyleFine) # diode anode
if isNgate:
inkDraw.line.relCoords(elem, [[3, 0]], [position[0] + 26.5, position[1] - 1.5], lineStyle=lineStyleFine) # diode cathode side line
inkDraw.line.relCoords(elem, [[3, 0], [-1.5, -3], [-1.5, 3]], [position[0] + 26.5, position[1] + 1.5], lineStyle=lineStyleFine) # diode
else:
inkDraw.line.relCoords(elem, [[3, 0]], [position[0] + 26.5, position[1] + 1.5], lineStyle=lineStyleFine) # diode cathode side line
inkDraw.line.relCoords(elem, [[3, 0], [-1.5, 3], [-1.5, -3]], [position[0] + 26.5, position[1] - 1.5], lineStyle=lineStyleFine) # diode
if mirrorSD:
self.scaleElement(elem, scaleX=1.0, scaleY=-1.0, center=position)
Yfactor = -1
else:
Yfactor = 1
if isEmode:
# enhancement-mode line
inkDraw.line.relCoords(elem, [[0, 3.5]], [position[0] + 19, position[1] - 7], lineStyle=lineStyleFine) # vertical gate line
inkDraw.line.relCoords(elem, [[0, 3.5]], [position[0] + 19, position[1] - 1.75], lineStyle=lineStyleFine) # vertical gate line
inkDraw.line.relCoords(elem, [[0, 3.5]], [position[0] + 19, position[1] + 3.5], lineStyle=lineStyleFine) # vertical gate line
else:
inkDraw.line.relCoords(elem, [[0, 14]], [position[0] + 19, position[1] - 7], lineStyle=lineStyleFine) # vertical gate line
if drawEnvelope:
if bodyDiode and isEmode:
inkDraw.circle.centerRadius(elem, centerPoint=[position[0] + 22, position[1]], radius=10, offset=[0, 0], label='circle')
else:
inkDraw.circle.centerRadius(elem, centerPoint=[position[0] + 20, position[1]], radius=10, offset=[0, 0], label='circle')
if drawSGDtags:
if bodyDiode and isEmode:
pos_Gtag = [position[0] + 9, position[1] + Yfactor * 2]
pos_Dtag = [position[0] + 26.5, position[1] - Yfactor * 12.5]
pos_Stag = [position[0] + 26.5, position[1] + Yfactor * 12.5]
pos_Btag = [position[0] + 35, position[1] - Yfactor * 3]
else:
pos_Gtag = [position[0] + 7, position[1] + Yfactor * 2]
pos_Dtag = [position[0] + 26.5, position[1] - Yfactor * 11.5]
pos_Stag = [position[0] + 26.5, position[1] + Yfactor * 11.5]
pos_Btag = [position[0] + 33, position[1] - Yfactor * 3]
tB = inkDraw.text.latex(self, group, 'G', position=pos_Gtag, fontSize=self.fontSizeSmall / 1.5, refPoint='cc', preambleFile=self.preambleFile, angleDeg=-angleDeg)
tC = inkDraw.text.latex(self, group, 'D', position=pos_Dtag, fontSize=self.fontSizeSmall / 1.5, refPoint='cc', preambleFile=self.preambleFile, angleDeg=-angleDeg)
tE = inkDraw.text.latex(self, group, 'S', position=pos_Stag, fontSize=self.fontSizeSmall / 1.5, refPoint='cc', preambleFile=self.preambleFile, angleDeg=-angleDeg)
if is4terminal:
tB = inkDraw.text.latex(self, group, 'B', position=pos_Btag, fontSize=self.fontSizeSmall / 1.5, refPoint='cc', preambleFile=self.preambleFile, angleDeg=-angleDeg)
if angleDeg != 0:
self.rotateElement(group, position, angleDeg)
# draw voltage drops
if drawVDS:
pos = [position[0] + 25 + 10, position[1]]
self.drawVoltArrowSimple(group, pos, name=VDSname, color=self.voltageColor, angleDeg=90, invertArrows=mirrorSD, size=20.0, invertCurvatureDirection=False, extraAngleText=angleDeg)
if drawVGS:
pos = [position[0] + 15, position[1] + Yfactor * 14]
ang = -Yfactor * 19
self.drawVoltArrowSimple(group, pos, name=VGSname, color=self.voltageColor, angleDeg=ang, invertArrows=True, size=10.0, invertCurvatureDirection=mirrorSD, extraAngleText=angleDeg)
if drawVDG:
pos = [position[0] + 10, position[1] - Yfactor * 8]
ang = Yfactor * 45
self.drawVoltArrowSimple(group, pos, name=VDGname, color=self.voltageColor, angleDeg=ang, invertArrows=False, size=20.0, invertCurvatureDirection=not mirrorSD, extraAngleText=angleDeg)
# draw terminal currents
if drawISarrow:
pos = [position[0] + 29, position[1] + Yfactor * 17.5]
self.drawCurrArrowSimple(group, pos, name=ISname, color=self.currentColor, angleDeg=90, invertArrows=not mirrorSD, size=7.5, invertTextSide=True, extraAngleText=angleDeg)
if drawIGarrow:
pos = [position[0] - 5, position[1] + Yfactor * 10]
self.drawCurrArrowSimple(group, pos, name=IGname, color=self.currentColor, angleDeg=0, invertArrows=False, size=7.5, invertTextSide=not mirrorSD, extraAngleText=angleDeg)
if drawIDarrow:
pos = [position[0] + 29, position[1] - Yfactor * 17.5]
self.drawCurrArrowSimple(group, pos, name=IDname, color=self.currentColor, angleDeg=90, invertArrows=not mirrorSD, size=7.5, invertTextSide=True, extraAngleText=angleDeg)
return group
# ---------------------------------------------
# junction gate field-effect transistor (N and P channel)
def drawTransistorJFET(self, parent, position=[0, 0], angleDeg=0, label='JFET', mirrorSD=False, drawSGDtags=False, drawEnvelope=False, gateType='P_gate', moveGate=False, drawVGS=False,
drawVDS=False, drawVDG=False, drawIDarrow=False, drawISarrow=False, drawIGarrow=False, VGSname='V_{GS}', VDSname='V_{SD}', VDGname='V_{GD}', IDname='i_d', ISname='i_s',
IGname='i_g'):
""" draws a junction gate field-effect transistor JFET
parent: parent object
label: label of the object (it can be repeated)
position: position [x,y]
angleDeg: orientation (default: 0.0)
mirrorSD: invert S and D terminals (default: False (D above, S below)
drawSGDtags: indentify SGD terminals (default: False)
drawEnvelope: draw circular envelope (default:False)
transistorType: type of field effect transistor: 'MOSFET-E' (Default) 'MOSFET_P'
gateType: type of gate: 'P_gate', 'N_gate'
moveGate: move gate terminar towards the source
drawVGS,drawVDS,drawVDG: draw voltage drop annotations (default: False)
drawIDarrow,drawISarrow,drawIGarrow: draw current annotations (default: False)
VGSname,VDSname,VDGname: voltage drop annotation text
IDname,ISname,IGname: current annotation text
"""
if gateType == 'P_gate':
isNgate = False
else:
isNgate = True
if mirrorSD:
Yfactor = -1
else:
Yfactor = 1
group = self.createGroup(parent, label)
elem = self.createGroup(group, label)
colorBlack = inkDraw.color.defined('black')
R_circle = 10.0
L_arrow = 2.0
markerMOS = inkDraw.marker.createMarker(self, 'MOSArrow', 'M -0.3,0 l -%f,%f l 0,-%f z' % (L_arrow * 1.2, L_arrow / 2.0, L_arrow), RenameMode=1, strokeColor=colorBlack, fillColor=colorBlack,
lineWidth=0.6)
lineStyleArrow = inkDraw.lineStyle.set(lineWidth=1.0, lineColor=colorBlack, markerEnd=markerMOS)
inkDraw.line.relCoords(elem, [[6, 0], [0, 20]], [position[0] + 17, position[1] + 5.0]) # source line
inkDraw.line.relCoords(elem, [[6, 0], [0, -20]], [position[0] + 17, position[1] - 5.0]) # drain line
inkDraw.line.relCoords(elem, [[0, 14]], [position[0] + 17, position[1] - 7], lineStyle=inkDraw.lineStyle.setSimpleBlack(lineWidth=2)) # vertical junction line
if moveGate:
posG_Y = Yfactor * 5
else:
posG_Y = 0
theta = math.asin(posG_Y / R_circle)
P1 = [10 + R_circle * (1 - math.cos(theta)), posG_Y]
P2 = [10 + R_circle - 3, posG_Y]
inkDraw.line.absCoords(elem, [[-12, posG_Y], P1], position) # gate terminal
if isNgate:
inkDraw.line.absCoords(elem, [P1, P2], position, lineStyle=lineStyleArrow) # gate arrow -->
else:
inkDraw.line.absCoords(elem, [P2, P1], position, lineStyle=lineStyleArrow) # gate arrow <--
if drawEnvelope:
inkDraw.circle.centerRadius(elem, centerPoint=[position[0] + 19, position[1]], radius=10, offset=[0, 0], label='circle')
if drawSGDtags:
pos_Gtag = [position[0] + 6, position[1] - Yfactor * 3 + posG_Y]
pos_Dtag = [position[0] + 25.5, position[1] - Yfactor * 11.5]
pos_Stag = [position[0] + 25.5, position[1] + Yfactor * 11.5]
tB = inkDraw.text.latex(self, group, 'G', position=pos_Gtag, fontSize=self.fontSizeSmall / 1.5, refPoint='cc', preambleFile=self.preambleFile, angleDeg=-angleDeg)
tC = inkDraw.text.latex(self, group, 'D', position=pos_Dtag, fontSize=self.fontSizeSmall / 1.5, refPoint='cc', preambleFile=self.preambleFile, angleDeg=-angleDeg)
tE = inkDraw.text.latex(self, group, 'S', position=pos_Stag, fontSize=self.fontSizeSmall / 1.5, refPoint='cc', preambleFile=self.preambleFile, angleDeg=-angleDeg)
if angleDeg != 0:
self.rotateElement(group, position, angleDeg)
# draw voltage drops
if drawVDS:
pos = [position[0] + 25 + 9, position[1]]
self.drawVoltArrowSimple(group, pos, name=VDSname, color=self.voltageColor, angleDeg=90, invertArrows=mirrorSD, size=20.0, invertCurvatureDirection=False, extraAngleText=angleDeg)
if drawVGS:
if moveGate:
pos = [position[0] + 15, position[1] + Yfactor * 13]
ang = -Yfactor * 19
L = 10
else:
pos = [position[0] + 12, position[1] + Yfactor * 11]
ang = -Yfactor * 30
L = 15
self.drawVoltArrowSimple(group, pos, name=VGSname, color=self.voltageColor, angleDeg=ang, invertArrows=True, size=L, invertCurvatureDirection=mirrorSD, extraAngleText=angleDeg)
if drawVDG:
if moveGate:
pos = [position[0] + 12, position[1] - Yfactor * 9]
ang = Yfactor * 45
L = 20
else:
pos = [position[0] + 12, position[1] - Yfactor * 11]
ang = Yfactor * 30
L = 15
self.drawVoltArrowSimple(group, pos, name=VDGname, color=self.voltageColor, angleDeg=ang, invertArrows=False, size=L, invertCurvatureDirection=not mirrorSD, extraAngleText=angleDeg)
# draw terminal currents
if drawISarrow:
pos = [position[0] + 28, position[1] + Yfactor * 17.5]
self.drawCurrArrowSimple(group, pos, name=ISname, color=self.currentColor, angleDeg=90, invertArrows=mirrorSD ^ isNgate, size=7.5, invertTextSide=True, extraAngleText=angleDeg)
if drawIGarrow:
pos = [position[0] - 5, position[1] + posG_Y + Yfactor * 5]
self.drawCurrArrowSimple(group, pos, name=IGname, color=self.currentColor, angleDeg=0, invertArrows=not isNgate, size=7.5, invertTextSide=not mirrorSD, extraAngleText=angleDeg)
if drawIDarrow:
pos = [position[0] + 28, position[1] - Yfactor * 17.5]
self.drawCurrArrowSimple(group, pos, name=IDname, color=self.currentColor, angleDeg=90, invertArrows=mirrorSD ^ isNgate, size=7.5, invertTextSide=True, extraAngleText=angleDeg)
return group