HVR1R8
Carbon-disc variable resistor
This representation identifies the publisher's carbon-disc variable-resistance form.
IEC
IEEE / ANSI · HVR1R8
ANSI/IEEE Carbon-disc variable resistor form
IEEE-library form of carbon-disc variable resistor: this representation identifies the publisher's carbon-disc variable-resistance form.
In plain English
What does ANSI/IEEE Carbon-disc variable resistor form mean?
This reference locates carbon-disc variable resistor in Autodesk's IEEE-oriented resistive components family. This representation identifies the publisher's carbon-disc variable-resistance form. The publisher identifies a variable resistive form using carbon discs as part of its operating construction. That identifies a component principle without assigning a resistance law or power rating. The public library uses HVR1R8 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
A simple example
Follow the actual current path and terminal polarity in the surrounding circuit. The symbol identifies an electrical function; voltage, current, energy limits and the device package pinout come from the selected component data rather than from the outline.
What the drawings help you do
Document the actual control mechanism and terminal arrangement where the device appears in a legacy circuit. It should not be silently replaced with a potentiometer having a different connection and operating behaviour. State the resistance-control mechanism and associated terminals in the equipment description. The material/mechanism indication is distinct from a generic electronic potentiometer. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
This particular reference
IEEE-library form of carbon-disc variable resistor: this representation identifies the publisher's carbon-disc variable-resistance form. The material/mechanism indication is distinct from a generic electronic potentiometer.
- Terminal
- An identified point where a conductor connects.
- Rating
- A value stating the conditions for which equipment is specified.
- Schematic
- A drawing showing function and connections rather than physical appearance.
Read the source: Autodesk IEEE Symbol Preview — Resistive Components
IEEE / ANSI · Variable Resistor with Carbon Disks
Autodesk IEEE Symbol Preview: Resistive Components, block HVR1R8. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · HVR1R8
What it represents
This reference locates carbon-disc variable resistor in Autodesk's IEEE-oriented resistive components family. This representation identifies the publisher's carbon-disc variable-resistance form. The publisher identifies a variable resistive form using carbon discs as part of its operating construction. That identifies a component principle without assigning a resistance law or power rating. The public library uses HVR1R8 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
Follow the actual current path and terminal polarity in the surrounding circuit. The symbol identifies an electrical function; voltage, current, energy limits and the device package pinout come from the selected component data rather than from the outline.
Document the actual control mechanism and terminal arrangement where the device appears in a legacy circuit. It should not be silently replaced with a potentiometer having a different connection and operating behaviour. State the resistance-control mechanism and associated terminals in the equipment description. The material/mechanism indication is distinct from a generic electronic potentiometer. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
How to read it
- State the resistance-control mechanism and associated terminals in the equipment description.
- The material/mechanism indication is distinct from a generic electronic potentiometer.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- State the resistance-control mechanism and associated terminals in the equipment description.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
The material/mechanism indication is distinct from a generic electronic potentiometer.
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
Public IEEE-oriented Resistive Components table explicitly lists HVR1R8 as Variable Resistor with Carbon Disks. This supports the vendor convention context, not reproduction of the publisher graphic.
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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