Important: Use custom search function to get better results from our thousands of pages

Use " " for compulsory search eg:"electronics seminar" , use -" " for filter something eg: "electronics seminar" -"/tag/" (used for exclude results from tag pages)


 
 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Study of LCR or Maxwell Bridge.
Post: #1

Study of LCR or Maxwell Bridge.



.docx  Study of LCR.docx (Size: 13 KB / Downloads: 14)

APPARATUS:

•LCR bridge meter

THEORY:

A Maxwell Bridge, also known as the Maxwell-Wien Bridge, is an AC bridge circuit
used for measuring an unknown inductance in terms of a known capacitance by
balancing the loads of its four arms, one of which contains the unknown inductance.
For AC bridge to balance, the impedance ratios of each branch must be equal:
The impedance quantities in the above equation are complex, accounting for both
magnitude and phase angle. It is insufficient that the impedance magnitudes alone be
balanced; without phase angles in balance as well, there will still be voltage across the
terminals of the null detector and the bridge will not be balanced.
As shown in circuit diagram, one arm of the Maxwell bridge consists of a capacitor in
parallel with a resistor (C1 and R1) and another arm consists of an inductor Lx in
series with a resistor (Lx and Rx). The other two arms just consist of a resistor each
(R2 and R3). The values of R2 and R3 are known, and R1 and C1 are both adjustable.
The unknown values are those of Lx and Rx.
Like other bridge circuits, the measuring ability of a Maxwell Bridge depends on
'balancing' the circuit. Balancing the circuit in Figure means adjusting C1 and R1 until
the current through the bridge between points A and B becomes zero. This happens
when the voltages at points A and B are equal. When the Maxwell Bridge is balanced,
it follows that
Rx = R2R3/R1
And Lx = R2R3C1
Note that the balancing of a Maxwell Bridge is independent of the source frequency.
One type of inductance measuring device is a multifunction meter, such as an
inductance/capacitance/resistance (LCR) meter. The LCR meter uses a principle of a
balancing bridge or an auto balancing bridge. The measurement device excites the
inductor using built-in signal generator and bridge balancing technique to measure the
value of impedance of the inductor. Specifically, in an LCR meter, the signal source is a
sinusoidal wave, whereas in a real operating environment, the signal may be a square
wave with a high voltage and a high current component.

PROCEDURE:

1. Connect the unknown inductance to the bridge meter.
2. Turn on the meter.
3. Set the parameter, frequency, display and range.
4. Set the indirect functions. Indirect functions are Clear “0”, Sorting, Auto-LCZ,
Buzzer, Change cursor, Advanced set, and State save & exit. Press setup key to
enter menu in measurement state. Pressing setup key again, the instrument returns
back to the measurement state.
21
5. Select the appropriate settings. The value of unknown inductance will be
displayed on the LCD screen.
 

Marked Categories : lcr bridges in iti, yhsm inucbr 001, practical of to study of lcr bridge, lcr autobalancing bridge, operate lcr bridge meter, maxwell bridge, contact maxwellelectrical com loc us, uses of maxwell bridge, values of lx and rx in wien s bridge, info maxwellelectrical com, http seminarprojects com thread study of lcr or maxwell bridge, to study maxwell bridge, theory of lcr meter, balance the maxwel wien bridge in measurement inn, lcr meter theory, maxwell bridge meter, maxwell bridge circuit pdf, lcr meter maxwell bridge, maxwell s bridge theory pdf, lx r3 r2 c1 prove that for maxwell wien bridge, lcr bridge, maxwell s bridge theory, maxwell wien bridge theory,

[-]
Quick Reply
Message
Type your reply to this message here.

Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  a project file on case study of haldiram Guest 0 0 23-04-2017 09:33 PM
Last Post: Guest
  analytical study of all assets or documents in your family project Guest 1 294 20-04-2017 10:12 AM
Last Post: jaseela123
  use of polymer composites in bridge rehabilitation ppt Guest 1 112 20-04-2017 10:09 AM
Last Post: jaseela123
  study of transportation needs in rural and semi urban areas doc Guest 0 0 12-04-2017 05:59 PM
Last Post: Guest
  analytical study of oil assets and document in your family Guest 1 210 10-04-2017 10:09 AM
Last Post: jaseela123
  journals on construction challenges of bridge in hilly areas pdf file Guest 0 0 09-04-2017 07:49 PM
Last Post: Guest
  comparative study of personal loans of sbi and hdfc Guest 0 0 09-04-2017 11:33 AM
Last Post: Guest
  to study the earth magnetic field using a tangent galvanometer Guest 1 223 08-04-2017 01:15 PM
Last Post: jaseela123
  to study floral whorls of different flowers collected from a garden Guest 1 152 08-04-2017 11:53 AM
Last Post: jaseela123
  chenab railway bridge ppt Guest 1 169 03-04-2017 12:49 PM
Last Post: jaseela123
This Page May Contain What is Study of LCR or Maxwell Bridge. And Latest Information/News About Study of LCR or Maxwell Bridge.,If Not ...Use Search to get more info about Study of LCR or Maxwell Bridge. Or Ask Here

Options: