Tech-Wonders.com

Menu
  • Apps
  • How To
  • Gadgets
    • Mobile
  • Software
  • Technology
  • Sitemap
  • Contact Us

Tech-Wonders.com » Electrical

Finding Value of Capcitance and Dissipation Factor of a Given Capacitor by Schering Bridge

Our aim here is to determing the value of the unknown electrical capacitance and dissipation factor of a given capacitor by the Schering’s bridge.

The circuit diagram of the schering’s bridge is as shown in the figure below:

Schering's Bridge Circuit Diagram

Its connection diagram in the kit is as below:

Schering's-bridge-connections-as-in-the-kit

Determination of “C” :-

The unknown capacitor C and the unknown resistor R can be found in the equipment. When the bridge is balanced, the following equation is satisfied.

Balanced Schering's Bridge Equations

Equating the real and imaginary parts on either sides of the equation we get,

equation for capacitance after balancing real and imaginary parts

Determination of Dissipation Factor :-

A practical capacitor can be considered as a pure capacitor in series with a small resistance as shown below:

equivalent-circuit-of-a-practical-capacitor

The phasor diagram is as below:

phasor diagram for practical capacitor

Dissipation Factor (D.F) = Power factor of capacitor.

Dissipation Factor

Procedure for Finding Capacitance :-

  1. Make connections as shown in the figure. Connect the unknown capacitor using 0.01μFm
  2. Set C2 = 0 and R = 0
  3. Set R1 = 1000Ω and adjust R2. Adjust both R1 and R2 till you get zero or minimum sound in the headphones.
  4. Note down R1, R2, C1 values.
  5. Calculate C using the formula C = (C1 R2) / R1
  6. Choose different unknown capacitor, repeat the above procedure and find the value of C using equation for C given above.

Procedure for Finding Dissipation Factor (D.F) :-

  1. Without disturbing the setting of the bridge (null points with R1 and R2) introduce R with a initial value say of 500Ω
  2. Adjust C2 till you get balance as indicated by minimum or zero sound in the headphones
  3. Find D.F using the formula D.F = ω.R.C
  4. Repeat above steps with different values of R.

Other Main Applications of Schering’s Bridge:-

Various other applications of Schering’s bridge include measurements of the properties of insulators, capacitor brushings, insulating oil and other insulating materials.

Tweet Telegram WhatsApp
Email Mix submit VK Pin It
Prev Article
Next Article
Tags:Electrical Measurements

Leave a Reply Cancel Reply

Popular Posts

  • How to Write an Essay Outline
    How to Create the Best Essay Outline
  • Increase Your Business Website’s Search Engine Rankings With Local SEO Services
    10 Local SEO Services Tips that Deliver …
  • ExpressVPN Protects Your Privacy Online
    The Best VPNs to Start Your New …
  • 12 Volt Linear Actuator
    How to Use a Linear Actuator

Related Posts

  • How to Measure 3-Phase Reactive Power of a Induction Motor Using Single Wattmeter 1
    How to Measure 3-Phase Reactive Power of …
  • Transmission Tower Under Gray Sky, Clouds, Conductor, Current, Electrical, Electricity, Electricity Bill, Energy, Generator, Grid, High Voltage, Power Lines, Sky, Sunset, Power Supply, Technology, Transmission, Voltage, Watts, Wire, Wires.
    Tips for Lowering Your Electricity Bill
  • light bulb - electricity - electrical technology - power outlet - powering our devices
    How Should We Power Our Devices?
  • Cell Sites (or Cell Towers)
    Comprehensive Guide to Cell Sites

Tech-Wonders.com

Technology Blog

About the Admin

RamaRaoBobby Hi there! I am RamaRao Bobby, Founder and Editor-in-Chief of
Tech-Wonders.com, Kakinada’s Top Technology Blog.

I am an avid Dog Lover and Tech Enthusiast. Read More

Recent Comments

  • Donald Lazaro on 4 Free and Easy-to-Use Screen Recording and Webcam Recording Tools
  • Murtaza ansari on Best Top 10 Hindi Websites and Blogs

Categories

Always Remain in Touch

  • Archives
  • Disclaimer
  • Privacy Policy
  • Featured Comments
Copyright © 2021 Tech-Wonders.com