Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

d/dt

IEC

IEC differentiator element (d/dt)

The differentiator element carries the d/dt function. Its output is proportional to how fast the input changes, so a ramp input gives a constant output and a step input gives a spike. In circuit form it is usually an op-amp with an input capacitor and feedback resistor, often with extra components to limit high-frequency gain.

Drawing use

Schematic

Application

Logic & signals

Reference family

IEC / Manufacturer

Form evidence

Rectangular analogue element with d/dt function. IEC-style rectangular analogue element presentation; the IEC graphical symbols programme is cited for context only. Independent educational drawing; not certified IEC geometry or an IEC database identifier. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.

A distinction that matters

The integrator accumulates the input; the differentiator responds to its rate of change.

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DIFFERENTIATOR

Symbols

Op-amp differentiator

Uses an amplifier input/feedback arrangement to obtain a differentiating response over its intended operating band.

Drawing use

Schematic

Application

Logic & signals

Reference family

Manufacturer

A distinction that matters

A practical differentiator has an intended frequency range; the ideal mathematical label does not specify a stable component circuit.

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Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.