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Related Concept Videos

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The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
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Published on: February 4, 2018

Optically coupled wide bandwidth dc isolation amplifier.

J G Gay1, C K Iddings

  • 1Department of Physics and Astrophysics, University of Colorado, Boulder, Colorado 80309, USA.

The Review of Scientific Instruments
|July 1, 1979
PubMed
Summary
This summary is machine-generated.

A versatile optically coupled DC isolation amplifier was developed for broad applications. This amplifier offers high voltage gain and a wide frequency response using readily available components.

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Quasi-light Storage for Optical Data Packets
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Published on: February 6, 2014

Area of Science:

  • Electrical Engineering
  • Instrumentation
  • Signal Processing

Background:

  • Isolation amplifiers are crucial for protecting sensitive equipment and personnel from high voltages.
  • Existing isolation techniques can be complex, costly, or limited in frequency response.

Purpose of the Study:

  • To design and characterize a general-purpose optically coupled DC isolation amplifier.
  • To demonstrate the feasibility of using standard, commercially available components for high-performance isolation.

Main Methods:

  • Utilized optical coupling for galvanic isolation between input and output stages.
  • Employed standard electronic components to achieve a voltage gain of 100.
  • Characterized the amplifier's frequency response from DC to over 250 kHz and its output swing capability.

Main Results:

  • Achieved a stable voltage gain of 100.
  • Demonstrated a significant output voltage swing of 20-V peak-to-peak.
  • Confirmed a wide operational bandwidth from DC to well above 250 kHz.

Conclusions:

  • The developed optically coupled DC isolation amplifier is a versatile and cost-effective solution.
  • Standard components enable the creation of high-performance isolation amplifiers.
  • The design is suitable for various applications requiring signal isolation and amplification.