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A triangle pointing right with two marked inputs.
Also known as: Op-amp symbol, Differential amplifier symbol
An op-amp is drawn as a triangle pointing in the direction of signal flow, with a minus-marked inverting input and a plus-marked non-inverting one. The power connections are usually omitted from the symbol, which is a drawing convention rather than a statement that the device needs no supply.
Denotes a high-gain differential amplifier, the general-purpose analogue building block.
Contexts: Technical drawing, Electrical equipment
Marks its two inputs with a minus and a plus for the inverting and non-inverting inputs, which set the sign of the output rather than any supply polarity.
Contexts: Technical drawing, Electrical equipment
Is conventionally drawn without its supply connections, which are present in the circuit even though the symbol omits them.
Contexts: Technical drawing, Electrical equipment
A triangle lying on its side with its point to the right, two lines entering the vertical face and one leaving the point.