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AC and DC Bridges


EEL 501
Maxwell Inductance Capacitance Bridge
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Used for measuring self inductance.
Two ratio dials of 1000, 100 & 10 ohms each are connected to 3 decade dials of the same values. One of the ratio arms is shunted with capacitance arranged in 3 decade dials over the range of 0 to 1.11 Mfd. The fourth arm is having 3 more decade dials of 0.1, 1, & 10 ohms with one experimental inductance. Accuracy of calibrations is 0.1%. Complete with inbuilt audio oscillator, headphone and working instructions
 
 
EEL 502
Maxwell Impedance Bridge
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Used for the comparison of self inductances.
Three decade dials of 1, 10 & 100 ohms are connected to a known variable standard inductance dial in series. The second and third arms contain 3 decade dials each of 10, 100 & 1000 Ohms. The unknown inductance is placed in the remaining arm. Terminals are provided for unknown inductance, AC supply and detector. Accuracy of calibrations is 0.1%. Provided with an unknown inductance, inbuilt audio oscillator, headphone and working manual.
 
 
EEL 503
Hay Bridge
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Used for measuring inductance coils of large time constant
A fixed resistance of 1K ohm is connected in series with three decade capacitance of 0.0001 mfd, 0.001 mfd, & 0.1 mfd constitute one arm of the bridge. The second arm contains two resistance decade dial of 10 and 100 ohms. The third arm contains three decade resistance dials of 1K ohms, 10K ohms & 100 K ohms. The experimental inductance is placed in the remaining arm. Complete with experimental inductance in box with terminals, inbuilt audio oscillator, headphone and operating manual.
 
 
EEL 504
Schering Bridge
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Used for measuring small capacitances.
A plug type resistance bar having 10, 20, 50, 100, 200, 500, 1000, 2000 & 5000 ohms is connected in series with 4 decade dials of 1, 10, 100, and 1000 ohms. A variable air capacitor with calibrated dial is connected in parallel with the four decade dials. A four dial capacitance box over the range of 0.001, 0.01, 0.1 & 1x10 Mfd is included in the circuit. Complete with inbuilt audio oscillator, headphone and working instructions.
 
 
EEL 505
Wien Series Resistance Bridge
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Used for measuring resistance and capacitance of a condenser.
Two decade dials of 100 ohms each constitute two arms of the bridge. The third arm contains 4 decade dials of 0.1, 1, 10, & 100 ohms, connected in series with a standard capacitance arranged in single decade of 0.1x10 Mfd. The remaining arm contains 4 decade dials of 0.1, 1, 10, & 100 ohms which are connected to unknown capacitances. Terminals are provided for unknown capacitance, AC supply and head phone. Complete with inbuilt audio oscillator, headphone and working instructions.
 
 
EEL 506
Wien Bridge For Frequency Measurement
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Two decade dials of 10 & 100 is connected in Parallel to 2 decade capacitance dials of x0. 1 Mfd & 1 Mfd. These constitute one arm of the Bridge. Two more decade dials of x 10 & 100 constitute the second arm of the bridge. The third arm comprises 2 decade dials of x100 & 1000 Ohms. The fourth arm contains 2 capacitance dials of x0.1 MFD & 1 MFD, connected in series with 2 Terminals. An unknown Resistance is connected to these 2 terminals. Terminals are provided for connecting an Audio Oscillator of variable frequency & a detector. Complete with A.F. Oscillator of 3 different frequencies. Provided With Operating Manual.
 
 
EEL 507
Anderson Bridge
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Used for measurement of inductance in terms of capacity & resistance.
Two ratio dials having 1, 10, 100 & 1000 ohms each are connected to 3 decade dial of the same value. Three more decade dial of the same values are placed in the inductance arm. Three decade dial of 0.1, 1, & 10 ohms are connected in series with a decade capacitance dial of 0.01x10 Mfd. Terminals are provided for AC supply, detector & unknown inductance. Coils are calibrated to 0.1%. Complete with inbuilt audio oscillator and headphone, working instructions and an experimental inductance.
 
 
EEL 508
Kohlrausch Conductivity Bridge
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Used for determining the Electrolytic conductivity & Resistance.
A circular slide wire is calibrated from 0 to 10 Ohms. A ratiodial with six multiple ratios of 0.1, 10, 100, 1 K & 10 K Ohms is connected in series with the slide wire giving 0.01 to 100 K Ohms. Terminals are provided for connecting Electrolytic Cell, Detector & Audio Frequency Oscillator. All this is enclosed in a teak wood box. Provided with inbuilt audio oscillator, headphone, Electrolytic cell with 2 platinum black coated electrodes and instruction manual.
 
 
EEL 509
Owen Bridge
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Used for measuring self inductance in terms of Standard Capacity & Resistance.
A Plug in-type Resistance Bar, having range from 1 to 500 Ohms, forming one arm of the bridge is connected in series with four decade dials over the range of 1, 10, 100 & 1000 Ohms & an unknown Inductance. Four decade dials of 0.1, 1, 10 & 100 Ohms are connected to a Standard Capacitance dial over the range of 0.1 x 10 Mfd. This constitutes the 3rd arm of the Bridge. The 4th arm contains one more standard Capacitance dial in the form of single decade of 0.1 x 10 Mfd. Terminals are provided for unknown Inductance, Oscillator & Head Phone. Provided with inbuilt audio oscillator, headphone and working manual. Calibrated to within + 0.1%.
 
 
EEL 510
Desauty Bridge
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Used for Comparison of Capacities
The two arms of the bridge comprise of 3 decade dials of 10, 100 & 1000 Ohms each. The third arm is provided with a Standard Capacitance in the form of a single decade of 0.1 x 10 Mfd. The Experimental Capacitance is placed in the remaining arm. Terminals are provided for unknown Capacitance, Head Phone & A.C. Supply Provided with inbuilt audio oscillator, headphone and experimental capacitance & working instructions.
 
 

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