# Adjustable capacitor

Canonical URL: https://eloragrid.ai/symbols/adjustable-capacitor
Publisher: Elora Grid
Updated: 2026-10-13
Lookup label: C ADJ
Drawing use: SLD, Schematic
Reference families: IEC, Manufacturer

An adjustable capacitor provides a documented variable capacitance.

## What it represents

An adjustable capacitor provides a documented variable capacitance. Its control or preset adjustment is specified separately from the two main circuit terminals.

## How to read it

- Identify whether adjustment is operational or a commissioning preset.
- The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.

## Information to show or reference

- State capacitance range
- Show circuit terminals
- Reference adjustment method

## Important distinction

Adjustable capacitance changes a capacitive parameter; it is not an adjustable resistor.

## Facts

- Drawing role: Passive circuit element
- Representation scope: Functional concept; not an official standard graphic or a product footprint
- Identifier status: The short label is a functional lookup label, not an assigned IEC or IEEE symbol number. Any separately listed Autodesk code is a verified vendor block name.

## Public references

- [Capacitive component symbols](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-74580D46-0731-41A6-918D-2DB419114207.htm) — Autodesk. Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.

## 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.