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Related Concept Videos

Cascaded Op Amps01:16

Cascaded Op Amps

Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
Sum and Difference OpAmps01:22

Sum and Difference OpAmps

Operational amplifiers (op-amps) are versatile devices that extend beyond amplification. In this context, two specific op-amp configurations are explored: the summing and difference amplifiers.
A summing amplifier, or an adder, utilizes an op-amp to merge multiple input signals into a single output signal. When audio signals are introduced into its input channels, the input resistors initiate currents that traverse feedback resistors, resulting in an output voltage. Applying Kirchhoff's current...
Operational Amplifiers01:17

Operational Amplifiers

The operational amplifier, often referred to as an op-amp, is a multifaceted building block of a circuit. This electronic component functions like a voltage-controlled voltage source and can also be used to create a voltage- or current-controlled current source. The design of an operational amplifier enables it to execute mathematical operations when external components like resistors and capacitors are linked to its terminals. An op-amp has the capacity to sum signals, amplify a signal,...
Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)01:27

Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)

α,β-Unsaturated carbonyl compounds with two electrophilic sites, the carbonyl carbon, and the β carbon, are susceptible to nucleophilic attack via two modes: conjugate or 1,4-addition and direct or 1,2-addition.
Conjugate addition results in a thermodynamically stable product. The reaction retains the stronger C=O bond at the expense of the weaker C=C π bond. The process is slow as the β carbon is less electrophilic than the carbonyl carbon.
Direct addition products are formed faster owing to...
Inverting and Non-inverting OpAmps01:20

Inverting and Non-inverting OpAmps

In an inverting amplifier, the input voltage is connected through a resistor to the inverting terminal. Meanwhile, the non-inverting terminal is grounded and a feedback resistor is established between the inverting and output terminal, as depicted in Figure 1.

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Related Experiment Video

Updated: Jun 13, 2026

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Construction of an optical-carry adder.

J B McManus, R S Putnam

    Applied Optics
    |May 11, 2010
    PubMed
    Summary

    This study presents a novel hybrid electronic/optical digital adder that achieves fully parallel operation using an optical system for carry-bits. This innovative design enhances computational speed for digital addition processes.

    Area of Science:

    • Digital electronics
    • Optical computing
    • Computer architecture

    Background:

    • Traditional digital adders face limitations in speed due to serial carry propagation.
    • Optical systems offer potential for parallel processing, overcoming electronic bottlenecks.

    Purpose of the Study:

    • To construct and evaluate a hybrid electronic/optical digital adder.
    • To leverage optical systems for parallel carry-bit operations.
    • To explore the performance of a bulk-optic breadboard system.

    Main Methods:

    • A hybrid system integrating electronic logic with an optical carry-bit path was designed.
    • Acousto-optic modulators served as optical switches, controlled by a He-Ne laser source.
    • The system was tested for adding two 4-bit words at 10 MHz.

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    Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

    Published on: February 3, 2023

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    Last Updated: Jun 13, 2026

    Quasi-light Storage for Optical Data Packets
    07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
    07:22

    Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

    Published on: February 3, 2023

    Main Results:

    • The hybrid adder demonstrated fully parallel operation by utilizing an optical system for carry-bits.
    • A pipeline delay of 500 ns was achieved for 4-bit word addition.
    • The optical carry path involved multistage light addition/propagation based on carry generation/propagation.

    Conclusions:

    • The hybrid electronic/optical adder architecture enables parallel processing for digital addition.
    • System speed for longer addends is constrained by optical light loss and size effects.
    • Further research could focus on mitigating these limitations for improved performance.