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<p>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.</p><h3>How do Op Amps work?</h3><p>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.</p><p>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.</p><h3>What is a differential amplifier?</h3><p>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.</p><h4>Where are Op Amps used?</h4><p>Operational amplifiers have a wide variety of uses in electronic circuits.</p><h4>Op Amp Applications</h4><ul><li>Crystal oscillators and waveform generators</li><li>Audio- and video-frequency pre-amplifiers and buffers</li><li>Integrators</li><li>Comparators</li><li>Analogue-to-digital (ADC) and digital-to-analogue (DAC) converters</li><li>Voltage Clamps</li><li>Analogue Calculators</li><li>Filters</li><li>Differentiators</li><li>Precision rectifiers</li><li>Linear voltage regulators</li><li>Current regulators</li><li>Precision rectifiers</li><li>Precision peak to peak detectors</li></ul>

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