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    Op Amps

    Op Amps, short for Operational Amplifiers, are semiconductor devices commonly used in analogue electronic circuits. They work by receiving an input signal and amplifying it into a stronger output signal. Op Amps offer a very high voltage gain.

    How do Op Amps work?

    Op Amps provide mathematical operations such as addition, multiplication, differentiation, and integration. They are voltage amplifiers which usually have a differential input and a single-ended output.

    There are two inputs into an Operational Amplifier which are called inverting (-) and non-inverting (+) inputs. If you were to increase the voltage to the inverting input, the output voltage decreases. Alternatively, if you increase the voltage to the non-inverting input, the output voltage increases. If an equal voltage is supplied to both inputs, the output will not change.

    What is a differential amplifier?

    Op Amps are often referred to as differential amplifiers. This is because the output of an Op-Amp is relative to the difference between the input voltages.

    Where are Op Amps used?

    Operational amplifiers have a wide variety of uses in electronic circuits.

    Op Amp Applications

    • Crystal oscillators and waveform generators
    • Audio- and video-frequency pre-amplifiers and buffers
    • Integrators
    • Comparators
    • Analogue-to-digital (ADC) and digital-to-analogue (DAC) converters
    • Voltage Clamps
    • Analogue Calculators
    • Filters
    • Differentiators
    • Precision rectifiers
    • Linear voltage regulators
    • Current regulators
    • Precision rectifiers
    • Precision peak to peak detectors
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