Electrical Elements¶

Two-Terminal Elements¶

Two-terminal element definitions

class schemdraw.elements.twoterm.Breaker(*d, dots: bool = True, **kwargs)¶

Circuit breaker

Parameters: dots – Show connection dots

class schemdraw.elements.twoterm.CPE(*d, **kwargs)¶: Constant Phase Element

class schemdraw.elements.twoterm.Capacitor(flat plates)¶

Parameters: polar – Add polarity + sign

class schemdraw.elements.twoterm.Capacitor2(*d, polar: bool = False, **kwargs)¶

Capacitor (curved bottom plate)

Parameters: polar – Add polarity + sign

class schemdraw.elements.twoterm.CapacitorTrim(*d, **kwargs)¶: Trim capacitor

class schemdraw.elements.twoterm.CapacitorVar(*d, **kwargs)¶: Variable capacitor

class schemdraw.elements.twoterm.Crystal(*d, **kwargs)¶: Crystal oscillator

class schemdraw.elements.twoterm.Diac(*d, **kwargs)¶: Diac (diode for alternating current)

class schemdraw.elements.twoterm.Diode(*d, **kwargs)¶

class schemdraw.elements.twoterm.DiodeShockley(*d, **kwargs)¶: Shockley Diode

class schemdraw.elements.twoterm.DiodeTunnel(*d, **kwargs)¶: Tunnel Diode

schemdraw.elements.twoterm.Fuse¶: alias of schemdraw.elements.twoterm.FuseIEEE

class schemdraw.elements.twoterm.FuseIEC(*d, **kwargs)¶: Fuse (IEC Style)

class schemdraw.elements.twoterm.FuseIEEE(*d, **kwargs)¶: Fuse (IEEE Style)

class schemdraw.elements.twoterm.FuseUS(*d, dots: bool = True, **kwargs)¶

Fuse (U.S. Style)

Parameters: dots – Show dots on connections to fuse

fill(color: bool | str = True) → Element¶: Set element fill

class schemdraw.elements.twoterm.Inductor(*d, **kwargs)¶

class schemdraw.elements.twoterm.Inductor2(*d, loops: int = 4, **kwargs)¶

Inductor, drawn as cycloid (loopy)

Parameters: loops – Number of inductor loops

class schemdraw.elements.twoterm.Josephson(*d, **kwargs)¶: Josephson Junction

class schemdraw.elements.twoterm.LED(*d, **kwargs)¶: Light emitting diode

class schemdraw.elements.twoterm.LED2(*d, **kwargs)¶: Light emitting diode (curvy light lines)

class schemdraw.elements.twoterm.Memristor(*d, **kwargs)¶: Memristor (resistor with memory)

class schemdraw.elements.twoterm.Memristor2(*d, **kwargs)¶: Memristor (resistor with memory), alternate style

class schemdraw.elements.twoterm.Photodiode(*d, **kwargs)¶: Photo-sensitive diode

schemdraw.elements.twoterm.Photoresistor¶: alias of schemdraw.elements.twoterm.PhotoresistorIEEE

schemdraw.elements.twoterm.PhotoresistorBox¶: alias of schemdraw.elements.twoterm.PhotoresistorIEC

class schemdraw.elements.twoterm.PhotoresistorIEC(*d, **kwargs)¶: Photo-resistor (European style)

class schemdraw.elements.twoterm.PhotoresistorIEEE(*d, **kwargs)¶: Photo-resistor (U.S. style)

schemdraw.elements.twoterm.PotBox¶: alias of schemdraw.elements.twoterm.PotentiometerIEC

schemdraw.elements.twoterm.Potentiometer¶: alias of schemdraw.elements.twoterm.PotentiometerIEEE

class schemdraw.elements.twoterm.PotentiometerIEC(*d, **kwargs)¶

Potentiometer (European style)

Anchors:: tap

class schemdraw.elements.twoterm.PotentiometerIEEE(*d, **kwargs)¶

Potentiometer (U.S. style)

Anchors:: tap

schemdraw.elements.twoterm.RBox¶: alias of schemdraw.elements.twoterm.ResistorIEC

schemdraw.elements.twoterm.RBoxVar¶: alias of schemdraw.elements.twoterm.ResistorVarIEC

schemdraw.elements.twoterm.Resistor¶: alias of schemdraw.elements.twoterm.ResistorIEEE

class schemdraw.elements.twoterm.ResistorIEC(*d, **kwargs)¶: Resistor as box (IEC/European style)

class schemdraw.elements.twoterm.ResistorIEEE(*d, **kwargs)¶: Resistor (IEEE/U.S. style)

schemdraw.elements.twoterm.ResistorVar¶: alias of schemdraw.elements.twoterm.ResistorVarIEEE

class schemdraw.elements.twoterm.ResistorVarIEC(*d, **kwargs)¶: Variable resistor (European style)

class schemdraw.elements.twoterm.ResistorVarIEEE(*d, **kwargs)¶: Variable resistor (U.S. style)

class schemdraw.elements.twoterm.SCR(*d, **kwargs)¶

Silicon controlled rectifier (or thyristor)

Anchors:: gate

class schemdraw.elements.twoterm.Schottky(*d, **kwargs)¶: Schottky Diode

class schemdraw.elements.twoterm.Thermistor(*d, **kwargs)¶

class schemdraw.elements.twoterm.Triac(*d, **kwargs)¶

Anchors:: gate

class schemdraw.elements.twoterm.Varactor(*d, **kwargs)¶: Varactor Diode/Varicap/Variable Capacitance Diode

class schemdraw.elements.twoterm.Zener(*d, **kwargs)¶: Zener Diode

Sources, meters, and lamp elements

class schemdraw.elements.sources.Battery(*d, **kwargs)¶

class schemdraw.elements.sources.BatteryCell(*d, **kwargs)¶: Cell

class schemdraw.elements.sources.Lamp(*d, **kwargs)¶: Incandescent Lamp

class schemdraw.elements.sources.MeterA(*d, **kwargs)¶: Ammeter

class schemdraw.elements.sources.MeterI(*d, **kwargs)¶: Current Meter (I)

class schemdraw.elements.sources.MeterOhm(*d, **kwargs)¶: Ohm meter

class schemdraw.elements.sources.MeterV(*d, **kwargs)¶: Volt meter

class schemdraw.elements.sources.Neon(*d, **kwargs)¶: Neon bulb

class schemdraw.elements.sources.Solar(*d, **kwargs)¶: Solar source

class schemdraw.elements.sources.Source(*d, **kwargs)¶: Generic source element

class schemdraw.elements.sources.SourceControlled(*d, **kwargs)¶: Generic controlled source

class schemdraw.elements.sources.SourceControlledI(*d, **kwargs)¶: Controlled current source

class schemdraw.elements.sources.SourceControlledV(*d, **kwargs)¶: Controlled voltage source

class schemdraw.elements.sources.SourceI(*d, **kwargs)¶: Current source

class schemdraw.elements.sources.SourcePulse(*d, **kwargs)¶: Pulse source

class schemdraw.elements.sources.SourceRamp(*d, **kwargs)¶: Ramp/sawtooth source

class schemdraw.elements.sources.SourceSin(*d, **kwargs)¶: Source with sine

class schemdraw.elements.sources.SourceSquare(*d, **kwargs)¶: Square wave source

class schemdraw.elements.sources.SourceTriangle(*d, **kwargs)¶: Triangle source

class schemdraw.elements.sources.SourceV(*d, **kwargs)¶: Voltage source

One-terminal Elements¶

One terminal element definitions

class schemdraw.elements.oneterm.Antenna(*d, **kwargs)¶

class schemdraw.elements.oneterm.AntennaLoop(*d, **kwargs)¶: Loop antenna (diamond style)

class schemdraw.elements.oneterm.AntennaLoop2(*d, **kwargs)¶: Loop antenna (square style)

class schemdraw.elements.oneterm.Ground(*d, **kwargs)¶: Ground connection

class schemdraw.elements.oneterm.GroundChassis(*d, **kwargs)¶: Chassis ground

class schemdraw.elements.oneterm.GroundSignal(*d, **kwargs)¶: Signal ground

class schemdraw.elements.oneterm.Vdd(*d, **kwargs)¶: Vdd connection

class schemdraw.elements.oneterm.Vss(*d, **kwargs)¶: Vss connection

Switches¶

Switches and buttons

class schemdraw.elements.switches.Button(*d, nc: bool = False, **kwargs)¶

Push button switch

Parameters: nc – Normally closed

class schemdraw.elements.switches.Switch(*d, action: Optional[Literal[open, close]] = None, **kwargs)¶

Toggle Switch

Parameters: action – action arrow (‘open’ or ‘close’)

class schemdraw.elements.switches.SwitchDIP(*d, n: int = 3, pattern: Optional[Sequence[bool]] = None, switchcolor: str = '#333333', swidth: float = 0.4, spacing: float = 0.2, **kwargs)¶

DIP switch

Parameters

n – Number of switches
pattern – Boolean sequence indicating whether each switch is flipped up or down
switchcolor – Fill color for flipped switches
swidth – Width of one switch
spacing – Spacing between switches

class schemdraw.elements.switches.SwitchDpdt(*d, link: bool = True, **kwargs)¶

Double-pole double-throw switch

Parameters: link – Show dotted line linking switch levers

Anchors:

p1
p2
t1
t2
t3
t4

class schemdraw.elements.switches.SwitchDpst(*d, link: bool = True, **kwargs)¶

Double-pole single-throw switch

Parameters: link – Show dotted line linking switch levers

Anchors:

p1
p2
t1
t2

class schemdraw.elements.switches.SwitchReed(*d, **kwargs)¶: Reed Switch

class schemdraw.elements.switches.SwitchRotary(*d, n: int = 4, dtheta: Optional[float] = None, theta0: Optional[float] = None, radius: float = 1, arrowlen: float = 0.75, arrowcontact: int = 0, **kwargs)¶

Rotary Switch

Parameters

n – number of contacts
dtheta – angle in degrees between each contact
theta0 – angle in degrees of first contact
radius – radius of switch
arrowlen – length of switch arrow
arrowcontact – index of contact to point to

Values for dtheta and theta will be calculated based on n if not provided.

Anchors:

P
T[x] for each contact (starting at 1)

class schemdraw.elements.switches.SwitchSpdt(*d, action: Optional[Literal[open, close]] = None, **kwargs)¶

Single-pole double throw switch.

Parameters: action – action arrow (‘open’ or ‘close’)

Anchors:

a
b
c

class schemdraw.elements.switches.SwitchSpdt2(*d, action: Optional[Literal[open, close]] = None, **kwargs)¶

Single-pole double throw switch, throws above and below.

Parameters: action – action arrow (‘open’ or ‘close’)

Anchors:

a
b
c

Lines¶

Lines, Arrows, and Labels

class schemdraw.elements.lines.Arrow(*d, double: bool = False, headwidth: float = 0.2, headlength: float = 0.25, **kwargs)¶

Parameters

double – Show arrowhead on both ends
headwidth – Width of arrow head
headlength – Length of arrow head

class schemdraw.elements.lines.Arrowhead(*d, headwidth: float = 0.15, headlength: float = 0.2, **kwargs)¶

class schemdraw.elements.lines.CurrentLabel(ofst: float = 0.4, length: float = 2, top: bool = True, reverse: bool = False, **kwargs)¶

Current label arrow drawn above an element

Use .at() method to place the label over an existing element.

Parameters

ofst – Offset distance from element
length – Length of the arrow
top – Draw arrow on top or bottom of element
reverse – Reverse the arrow direction

at(xy: XY | Element) → Element¶

Specify CurrentLabel position.

If xy is an Element, arrow will be centered along element and its color will also be inherited.

Parameters

xy – The absolute (x, y) position or an
instance to center the arrow over (Element) –

class schemdraw.elements.lines.CurrentLabelInline(direction: Literal[in, out] = 'in', ofst: float = 0.8, start: bool = True, headlength: float = 0.3, headwidth: float = 0.3, **kwargs)¶

Current direction arrow, inline with element.

Use .at() method to place arrow on an Element instance

Parameters

direction – arrow direction ‘in’ or ‘out’ of element
ofst – Offset along lead length
start – Arrow at start or end of element
headlength – Length of arrowhead
headwidth – Width of arrowhead

at(xy: XY | Element) → Element¶

Specify CurrentLabelInline position.

If xy is an Element, arrow will be placed along the element’s leads and the arrow color will be inherited.

Parameters

xy – The absolute (x, y) position or an
instance to place the arrow on (Element) –

class schemdraw.elements.lines.Dot(*d, radius: float = 0.075, open: bool = False, **kwargs)¶

Connection Dot

Parameters

radius – Radius of dot
open – Draw as an open circle

class schemdraw.elements.lines.DotDotDot(*d, radius: float = 0.075, open: bool = False, **kwargs)¶

Ellipsis element

Parameters

radius – Radius of dots
open – Draw dots as open circles

“Ellipsis” is a reserved keyword in Python used for slicing, thus the name DotDotDot.

class schemdraw.elements.lines.Gap(*d, **kwargs)¶: Gap for labeling port voltages, for example. Draws nothing, but provides place to attach a label such as (‘+’, ‘V’, ‘-‘).

class schemdraw.elements.lines.Label(*d, label: Optional[str] = None, **kwargs)¶

Label element.

For more options, use Label().label() method.

Parameters: label – text to display.

class schemdraw.elements.lines.Line(*d, **kwargs)¶: Straight Line

class schemdraw.elements.lines.LineDot(*d, double: bool = False, radius: float = 0.075, fill: bool = True, **kwargs)¶

Line with a dot at the end

Parameters

double – Show dot on both ends
radius – Radius of the dot
fill – Color to fill the dot, or True to fill with element color

class schemdraw.elements.lines.LoopArrow(direction: Literal[cw, ccw] = 'cw', theta1: float = 35, theta2: float = - 35, width: float = 1.0, height: float = 1.0, **kwargs)¶

Loop arrow, for mesh analysis notation

Parameters

direction – loop direction ‘cw’ or ‘ccw’
theta1 – Angle of start of loop arrow
theta2 – Angle of end of loop arrow
width – Width of loop
height – Height of loop

class schemdraw.elements.lines.LoopCurrent(elm_list: Optional[Sequence[schemdraw.elements.elements.Element]] = None, direction: Literal[cw, ccw] = 'cw', theta1: float = 35, theta2: float = - 35, pad: float = 0.2, **kwargs)¶

Loop current label, for mesh analysis notation, placed within a box of 4 existing elements.

Parameters

elm_list – List of 4 elements surrounding loop, in order (top, right, bottom, left)
direction – loop direction ‘cw’ or ‘ccw’
theta1 – Angle of start of loop arrow
theta2 – Angle of end of loop arrow
pad – Distance from elements to loop

class schemdraw.elements.lines.Rect(*d, corner1: Union[Sequence[float], schemdraw.util.Point] = (0, 0), corner2: Union[Sequence[float], schemdraw.util.Point] = (1, 1), **kwargs)¶

Rectangle Element

Used mainly for buliding more complex elements. Corner arguments are relative to Element coordinates, not Drawing coordinates.

Parameters

corner1 – Position of top-left corner
corner2 – Position of bottom-right corner

class schemdraw.elements.lines.Tag(*d, width: float = 1.5, height: float = 0.625, **kwargs)¶

Tag/flag element for labeling signal names.

Because text size is unknown until drawn, must specify width manually to fit a given text label.

Parameters

width – Width of the tag
height – Height of the tag

Cables and Connectors¶

Cable elements, coaxial and triaxial

class schemdraw.elements.cables.Coax(*d, length: float = 3, radius: float = 0.3, leadlen: float = 0.6, **kwargs)¶

Coaxial cable element.

Parameters

length – Total length of the cable, excluding lead extensions.
radius – Radius of shield
leadlen – Distance (x) from start of center conductor to start of shield.

Anchors:

shieldstart
shieldstart_top
shieldend
shieldend_top
shieldcenter
shieldcenter_top

class schemdraw.elements.cables.Triax(*d, length: float = 3, leadlen: float = 0.6, radiusinner: float = 0.3, radiusouter: float = 0.6, shieldofststart: float = 0.3, shieldofstend: float = 0.3, **kwargs)¶

Triaxial cable element.

Parameters

length – Total length of the cable
radiusinner – Radius of inner guard
radiusouter – Radius of outer shield
leadlen – Distance (x) from start of center conductor to start of guard.
shieldofststart – Distance from start of inner guard to start of outer shield
shieldofstend – Distance from end of outer shield to end of inner guard

Anchors:

shieldstart
shieldstart_top
shieldend
shieldend_top
shieldcenter
shieldcenter_top
guardstart
guardstart_top
guardend
guardend_top

Connectors and bus lines

class schemdraw.elements.connectors.BusConnect(*d, n: int = 1, dy: float = 0.6, up: bool = True, lwbus: float = 4, l: float = 3, **kwargs)¶

Data bus connection.

Adds the short diagonal lines that break out a bus (wide line) to connect to an Ic or Header element.

Parameters

n – Number of parallel lines
dy – Distance between parallel lines
up – Slant up or down
lwbus – Line width of bus line
l – length of connection lines

Anchors:

start
end
p[X] where X is int for each data line

class schemdraw.elements.connectors.BusLine(*d, lw: float = 4, **kwargs)¶

Data bus line. Just a wide line.

Use BusConnect to break out connections to the BusLine.

Parameters: lw – Line width

class schemdraw.elements.connectors.CoaxConnect(*d, radius: float = 0.4, radiusinner: float = 0.12, fillinner: str = 'bg', **kwargs)¶

Coaxial connector

Parameters

radius – Radius of outer shell
radiusinner – Radius of inner conductor
fillinner – Color to fill inner conductor

Anchors:

center
N
S
E
W

class schemdraw.elements.connectors.DB25(*d, pinspacing: float = 0.6, edge: float = 0.3, number: bool = False, pinfill: str = 'bg', **kwargs)¶

DB25 Connector

Parameters

pinspacing – Distance between pins
edge – Distance between edge and pins
number – Draw pin numbers
pinfill – Color to fill pin circles

Anchors:

pin1 thru pin25

class schemdraw.elements.connectors.DB9(*d, pinspacing: float = 0.6, edge: float = 0.3, number: bool = False, pinfill: str = 'bg', **kwargs)¶

DB9 Connector

Parameters

pinspacing – Distance between pins
edge – Distance between edge and pins
number – Draw pin numbers
pinfill – Color to fill pin circles

Anchors:

pin1 thru pin9

class schemdraw.elements.connectors.Header(*d, rows: int = 4, cols: int = 1, style: Literal[round, square, screw] = 'round', numbering: Literal[lr, ud, ccw] = 'lr', shownumber: bool = False, pinsleft: Optional[Sequence[str]] = None, pinsright: Optional[Sequence[str]] = None, pinalignleft: Literal[center, top, bottom] = 'bottom', pinalignright: Literal[center, top, bottom] = 'bottom', pinfontsizeright: float = 9, pinfontsizeleft: float = 9, pinspacing: float = 0.6, edge: float = 0.3, pinfill: str = 'bg', **kwargs)¶

Header connector element

Parameters

rows – Number of rows
cols – Number of columns. Pin numbering requires 1 or 2 columns
style – Connector style, ‘round’, ‘square’, or ‘screw’
numbering – Pin numbering order. ‘lr’ for left-to-right numbering, ‘ud’ for up-down numbering, or ‘ccw’ for counter-clockwise (integrated-circuit style) numbering. Pin 1 is always at the top-left corner, unless flip method is also called.
shownumber – Draw pin numbers outside the header
pinsleft – List of pin labels for left side
pinsright – List of pin labels for right side
pinalignleft – Vertical alignment for pins on left side (‘center’, ‘top’, ‘bottom’)
pinalignright – Vertical alignment for pins on right side (‘center’, ‘top’, ‘bottom’)
pinfontsizeleft – Font size for pin labels on left
pinfontsizeright – Font size for pin labels on right
pinspacing – Distance between pins
edge – Distance between header edge and first pin row/column
pinfill – Color to fill pin circles

Anchors:: pin[X] for each pin

class schemdraw.elements.connectors.Jack(*d, **kwargs)¶: Jack (female connector)

class schemdraw.elements.connectors.Jumper(*d, pinspacing: float = 0.6, **kwargs)¶

Jumper for use on a Header element

Set position using at() method with a Header pin location, e.g. Jumper().at(H.in1)

Parameters: pinspacing – Spacing between pins

class schemdraw.elements.connectors.OrthoLines(*d, n: int = 1, dy: float = 0.6, xstart: Optional[float] = None, **kwargs)¶

Orthogonal connection lines

Use at() and to() methods to specify starting and ending location of OrthoLines.

The default lines are spaced to provide connection to pins with default spacing on Ic element or connector such as a Header.

Parameters

n – Number of parallel lines
dy – Distance between parallel lines
xstart – Fractional distance (0-1) to start vertical portion of first ortholine

to(xy: Union[Sequence[float], schemdraw.util.Point]) → Element¶: Specify ending position of OrthoLines

class schemdraw.elements.connectors.Plug(*d, **kwargs)¶: Plug (male connector)

class schemdraw.elements.connectors.RightLines(*d, n: int = 1, dy: float = 0.6, **kwargs)¶

Right-angle line connector

Use at() and to() methods to specify starting and ending location.

The default lines are spaced to provide connection to pins with default spacing on Ic element or connector such as a Header.

Parameters

n – Number of parallel lines
dy – Distance between parallel lines

to(xy: Union[Sequence[float], schemdraw.util.Point]) → Element¶: Specify ending position of OrthoLines

Transistors¶

Transistor elements

class schemdraw.elements.transistors.Bjt(*d, circle: bool = False, **kwargs)¶

Bipolar Junction Transistor (untyped)

Parameters: circle – Draw circle around the transistor

Anchors:

collector
emitter
base

class schemdraw.elements.transistors.BjtNpn(*d, circle: bool = False, **kwargs)¶

NPN Bipolar Junction Transistor

Parameters: circle – Draw circle around the transistor

Anchors:

collector
emitter
base

class schemdraw.elements.transistors.BjtPnp(*d, circle: bool = False, **kwargs)¶

PNP Bipolar Junction Transistor

Parameters: circle – Draw circle around the transistor

Anchors:

collector
emitter
base

class schemdraw.elements.transistors.BjtPnp2c(*d, circle: bool = False, **kwargs)¶

PNP Bipolar Junction Transistor with 2 collectors

Parameters: circle – Draw circle around the transistor

Anchors:

collector
emitter
base
C2

class schemdraw.elements.transistors.JFet(*d, **kwargs)¶

Junction Field Effect Transistor (untyped)

Anchors:

source
drain
gate

class schemdraw.elements.transistors.JFetN(*d, circle: bool = False, **kwargs)¶

N-type Junction Field Effect Transistor

Parameters: circle – Draw circle around the transistor

Anchors:

source
drain
gate

class schemdraw.elements.transistors.JFetP(*d, circle: bool = False, **kwargs)¶

P-type Junction Field Effect Transistor

Parameters: circle – Draw circle around the transistor

Anchors:

source
drain
gate

class schemdraw.elements.transistors.NFet(*d, bulk: bool = False, **kwargs)¶

N-type Field Effect Transistor

Parameters: bulk – Draw bulk contact

Anchors:

source
drain
gate

class schemdraw.elements.transistors.PFet(*d, bulk: bool = False, **kwargs)¶

P-type Field Effect Transistor

Parameters: bulk – Draw bulk contact

Anchors:: source drain gate

Transformers¶

Transformer element definitions

class schemdraw.elements.xform.Transformer(*d, t1: int = 4, t2: int = 4, core: bool = True, loop: bool = False, **kwargs)¶

Add taps to the windings on either side using the .taps method.

Parameters

t1 – Turns on primary (left) side
t2 – Turns on secondary (right) side
core – Draw the core (parallel lines)
loop – Use spiral/cycloid (loopy) style

Anchors:

p1: primary side 1
p2: primary side 2
s1: secondary side 1
s2: secondary side 2
Other anchors defined by taps method

tap(name: str, pos: int, side: Literal[primary, secondary, left, right] = 'primary')¶

Add a tap

A tap is simply a named anchor definition along one side of the transformer.

Parameters

name – Name of the tap/anchor
pos – Turn number from the top of the tap
side – Primary (left) or Secondary (right) side

Opamp and Integrated Circuits¶

Operation amplifier

class schemdraw.elements.opamp.Opamp(*d, sign: bool = True, **kwargs)¶

Operational Amplifier.

Parameters: sign – Draw +/- labels at each input

Anchors:

in1
in2
out
vd
vs
n1
n2
n1a
n2a

Integrated Circuit Element

class schemdraw.elements.intcircuits.DFlipFlop(*d, preclr: bool = False, preclrinvert: bool = True, size=(2, 3), **kwargs)¶

D-Type Flip Flop

Parameters

preclr – Show preset and clear inputs
preclrinvert – Add invert bubble to preset and clear inputs
size – Size of the box

Anchors:

D
CLK
Q
Qbar
PRE
CLR

class schemdraw.elements.intcircuits.Ic(size: XY = None, pins: list[IcPin] = None, pinspacing: float = 0.6, edgepadH: float = 0.25, edgepadW: float = 0.25, leadlen: float = 0.5, lofst: float = 0.15, lsize: float = 14, plblofst: float = 0.05, plblsize: float = 11, slant: float = 0, w: float = None, h: float = None, **kwargs)¶

Integrated Circuit element, or any other black-box element with arbitrary pins on any side.

Parameters

size – (Width, Height) of box
pins – List of IcPin instances defining the inputs/outputs
pinspacing – Spacing between pins
edgepadH – Padding between top/bottom and first pin
edgepadW – Padding between left/right and first pin
lofst – Offset between edge and label (inside box)
lsize – Font size of labels (inside box)
plblofst – Offset between edge and pin label (outside box)
plblsize – Font size of pin labels (outside box)
slant – Slant angle of top/bottom edges (e.g. for multiplexers)

If a pin is named ‘>’, it will be drawn as a proper clock signal input.

Anchors:

inL[X] - Each pin on left side
inR[X] - Each pin on right side
inT[X] - Each pin on top side
inB[X] - Each pin on bottom side
pin[X] - Each pin with a number
CLK (if clock pin is defined with ‘>’ name)

Pins with names are also defined as anchors (if the name does not conflict with other attributes).

class schemdraw.elements.intcircuits.Ic555(*d, **kwargs)¶

class schemdraw.elements.intcircuits.IcDIP(*d, pins: int = 8, names: Optional[Sequence[str]] = None, notch: bool = True, width: float = 3, pinw: float = 0.6, spacing: float = 0.5, number: bool = True, fontsize: float = 12, pfontsize: float = 10, **kwargs)¶

Dual-inline Package Integrated Circuit.

Parameters

pins – number of pins
names – List of names for each pin to display inside the box
notch – Show the notch at top of box
width – Width of the box
pinw – Width and height of each pin
spacing – Distance between each pin
number – Show pin numbers inside each pin
fontsize – Size for pin name labels
pfontsize – Size for pin number labels

Anchors:

p[x] - Each pin
p[x]_in - Inside contact for each pin

If signal names are provided, they will also be added as anchors along with _in inside variants.

class schemdraw.elements.intcircuits.IcPin(name: str | None = None, pin: str | None = None, side: Literal[left, right, top, bottom, L, R, T, B] = 'L', pos: float | None = None, slot: str | None = None, invert: bool = False, invertradius: float = 0.15, color: str | None = None, rotation: float = 0, anchorname: str | None = None, lblsize: float | None = None)¶

Integrated Circuit Pin

Parameters

name – Input/output name (inside the box)
pin – Pin name/number (outside the box)
side – Side of box for the pin, ‘left’, ‘right’, ‘top’, ‘bottom’
pos – Pin position along the side, fraction from 0-1
slot – Slot definition of pin location, given in ‘X/Y’ format. ‘2/4’ is the second pin on a side with 4 pins.
invert – Add an invert bubble to the pin
invertradius – Radius of invert bubble
color – Color for the pin and label
rotation – Rotation for label text
anchorname – Named anchor for the pin

class schemdraw.elements.intcircuits.JKFlipFlop(*d, preclr: bool = False, preclrinvert: bool = True, size=(2, 3), **kwargs)¶

J-K Flip Flop

Parameters

preclr – Show preset and clear inputs
preclrinvert – Add invert bubble to preset and clear inputs
size – Size of the box

Anchors:

J
K
CLK
Q
Qbar
PRE
CLR

class schemdraw.elements.intcircuits.Multiplexer(demux: bool = False, size: XY = None, pins: list[IcPin] = None, pinspacing: float = 0.6, edgepadH: float = 0.25, edgepadW: float = 0.25, leadlen: float = 0.5, lofst: float = 0.15, lsize: float = 14, plblofst: float = 0.05, plblsize: float = 11, slant: float = 25, **kwargs)¶

Parameters

demux – Draw as demultiplexer
size – (Width, Height) of box
pins – List of IcPin instances defining the inputs/outputs
pinspacing – Spacing between pins
edgepadH – Padding between top/bottom and first pin
edgepadW – Padding between left/right and first pin
lofst – Offset between edge and label (inside box)
lsize – Font size of labels (inside box)
plblofst – Offset between edge and pin label (outside box)
plblsize – Font size of pin labels (outside box)
slant – Slant angle of top/bottom edges

If a pin is named ‘>’, it will be drawn as a proper clock signal input.

Anchors:

inL[X] - Each pin on left side
inR[X] - Each pin on right side
inT[X] - Each pin on top side
inB[X] - Each pin on bottom side
pin[X] - Each pin with a number
CLK (if clock pin is defined with ‘>’ name)

Pins with names are also defined as anchors (if the name does not conflict with other attributes).

class schemdraw.elements.intcircuits.SevenSegment(*d, decimal: bool = False, digit: int | str = 8, segcolor: str = 'red', tilt: float = 10, labelsegments: bool = True, anode: bool = False, cathode: bool = False, size=(2, 1.5), **kwargs)¶

A seven-segment display digit.

Parameters

decimal – Show decimal point segment
digit – Number to display
segcolor – Color of segments
tilt – Tilt angle in degrees
labelsegments – Add a-g labels to each segment
anode – Add common anode pin
cathode – Add common cathode pin
size – Total size of the box

Anchors:

a
b
c
d
e
f
g
dp
cathode
anode

class schemdraw.elements.intcircuits.VoltageRegulator(*d, size=(2, 1.5), **kwargs)¶

Voltage regulator

Parameters: size – Size of the box

Anchors:

in
out
gnd

schemdraw.elements.intcircuits.sevensegdigit(bottom: float = 0, left: float = 0, seglen: float = 1.5, segw: float = 0.3, spacing: float = 0.12, decimal: bool = False, digit: int | str = 8, segcolor: str = 'red', tilt: float = 10, labelsegments: bool = True) → list[SegmentType]¶

Generate drawing segments for a 7-segment display digit. Use for building new elements incorporating a 7-segment display.

Parameters

bottom – Location of bottom of digit
left – Location of left side of digit
seglen – Length of one segment
segw – Width of one segment
spacing – Distance between segments in corners
decimal – Show decimal point segment
digit – Number to display
segcolor – Color of segments
tilt – Tilt angle in degrees
labelsegments – Add a-g labels to each segment
anode – Add common anode pin
cathode – Add common cathode pin
size – Total size of the box

Returns

List of Segments making the digit

Other¶

Other elements

class schemdraw.elements.misc.AudioJack(*d, radius: float = 0.075, ring: bool = False, ringswitch: bool = False, dots: bool = True, switch: bool = False, open: bool = True, **kwargs)¶

Audio Jack with 2 or 3 connectors and optional switches.

Parameters

ring – Show ring (third conductor) contact
switch – Show switch on tip contact
ringswitch – Show switch on ring contact
dots – Show connector dots
radius – Radius of connector dots

Anchors:

tip
sleeve
ring
ringswitch
tipswitch

class schemdraw.elements.misc.Mic(*d, **kwargs)¶

Microphone element with two inputs.

Anchors:

in1
in2

class schemdraw.elements.misc.Motor(*d, **kwargs)¶

class schemdraw.elements.misc.Speaker(*d, **kwargs)¶

Speaker element with two inputs.

Anchors:

in1
in2

Compound elements made from groups of other elements

class schemdraw.elements.compound.ElementCompound(*d, **kwargs)¶

Element onto which other elements can be added like a drawing

add(element: schemdraw.elements.elements.Element, **kwargs) → schemdraw.elements.elements.Element¶: Add an element to the segments list

class schemdraw.elements.compound.Optocoupler(*d, box: bool = True, boxfill: str = 'none', boxpad: float = 0.2, base: bool = False, **kwargs)¶

Optocoupler element

Parameters

box – Draw a box around the optocoupler
boxfill – Color to fill the box
boxpad – Padding between phototransistor and box
base – Add a base contact to the phototransistor

Anchors:

anode
cathode
emitter
collector
base (if base==True)

class schemdraw.elements.compound.Relay(*d, unit: float = 2, cycl: bool = False, switch: str = 'spst', core: bool = True, box: bool = True, boxfill: str = 'none', boxpad: float = 0.25, swreverse: bool = False, swflip: bool = False, link: bool = True, **kwargs)¶

Relay element with an inductor and switch

Parameters

unit – Unit length of the inductor
cycloid – Use cycloid style inductor
switch – Switch style ‘spst’, ‘spdt’, ‘dpst’, ‘dpdt’
swreverse – Reverse the switch
swflip – Flip the switch up/down
core – Show inductor core bar
link – Show dotted line linking inductor and switch
box – Draw a box around the relay
boxfill – Color to fill the box
boxpad – Spacing between components and box

Electrical Elements¶

Two-Terminal Elements¶

One-terminal Elements¶

Switches¶

Lines¶

Cables and Connectors¶

Transistors¶

Transformers¶

Opamp and Integrated Circuits¶

Other¶

SchemDraw

Navigation

Related Topics