# ANSI/IEEE adjustable-core inductor symbol

Canonical URL: https://eloragrid.ai/symbols/ansi-adjustable-core-inductor
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: L ADJ
Drawing use: SLD, Schematic
Reference families: IEEE / ANSI, Manufacturer

## Symbol convention

Convention: IEEE / ANSI
Form: Autodesk IEEE-oriented Reactors 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.
Related representation: [Adjustable-core inductor](https://eloragrid.ai/symbols/adjustable-core-inductor)

IEEE-oriented graphical reference for adjustable-core inductor, with public vendor evidence and drawing-reading notes.

## What it represents

The adjustable inductor form combines a winding with an adjustment function. Its drawing must identify the adjusted parameter and the product's permitted range, rather than interpreting an arrow as a signal connection.
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

- Separate the adjustment indication from the winding leads.
- 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 inductance range
- Identify adjustment method
- Reference component limits

## Important distinction

An adjustment arrow does not represent an extra conducting terminal unless the actual device diagram says so.

## Facts

- Convention evidence: Autodesk IEEE Symbol Preview — Reactors
- Public vendor block name: HRT1L4 (Autodesk identifier; not an IEEE symbol number)
- Standards context: IEEE/ANSI 315-1975 covers diagram graphics. IEEE lists this edition as Inactive-Reserved.
- Artwork scope: Original functional illustration; exact standard glyph and compliance are not certified

## Public references

- [Autodesk IEEE Symbol Preview — Reactors](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-2246C552-4410-48FF-9E4B-05B6460B62F7.htm) — Autodesk. 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](https://standards.ieee.org/ieee/315/515/) — IEEE Standards Association. Graphic-symbol standards context and official status; not a source of reproduced artwork.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.