R
Resistor
A resistive component with its value and purpose documented separately.
Schematic
IEEE / ANSI · R
ANSI/IEEE resistor symbol
IEEE-oriented graphical reference for resistor, with public vendor evidence and drawing-reading notes.
IEEE / ANSI · Autodesk IEEE-oriented Resistive Components functional form
Autodesk explicitly publishes this block under IEEE Symbol Preview. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · R
What it represents
The fixed-resistor form identifies resistance in the circuit path. This original zigzag illustration explains the resistive function without assigning a standard graphic number; the component value, power rating and reference designator remain essential to reading the actual schematic.
This is a convention-specific lookup based on the publisher's IEEE-labelled preview. The geometry here is independently drawn to explain the connection or operation; it is not a certified reproduction of the standard graphic.
How to read it
- Read resistance and rating from the annotation rather than from the number of drawn zigzag segments.
- Read the selected library and the project legend together. A vendor block identifier is meaningful within its named library and is not a universal standard-symbol code.
Information to show or reference
- State resistance/tolerance
- Record power rating
- Identify circuit function
A distinction that matters
A fixed resistance and a variable resistance are different component functions, even if their basic graphical family is related.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEEE Symbol Preview — Resistive Components
Exact public IEEE-oriented category page verifying the component name and vendor block identifier.
IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams
Graphic-symbol standards context and official status; not a source of reproduced artwork.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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