R
Resistor
A resistive component with its value and purpose documented separately.
Schematic
IEC · HCA1_S00575
Preset-adjustable capacitor
This form distinguishes a capacitor with a preset or trim adjustment.
IEC · Preset-adjustable capacitor
Autodesk IEC-60617 Symbol Preview — Capacitive component forms; vendor family reference, not certified IEC geometry or database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · HCA1_S00575
What it represents
This form distinguishes a capacitor with a preset or trim adjustment. A trim or preset adjustment sets the capacitive value for the documented circuit function. The setting interface is different from a continuous operator adjustment in ordinary use.
Identify the adjustment function and the circuit terminals. The component value, range and setting method belong in the equipment or component documentation.
How to read it
- State how the capacitance setting is specified and which terminals belong to the device.
- A preset adjustment is different from an operator-controlled variable capacitor.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- State how the capacitance setting is specified and which terminals belong to the device.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
A preset adjustment is different from an operator-controlled variable capacitor.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Capacitive component symbols
Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.
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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