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Bridge Anderson

ANDERSON BRIDGE for Self -Inductance

INSIF P-668
* Non-Inductive Resistance (in ohms)
* P=1000 Q = 1000 R = 1000
* S=A variable non-inductive resistance in the form of 3-decades of 10 x 1, 10 x 10 and 10 x 100 ohms. This resistance also includes the resistance of self-inductance L which is also connected in the same arm. m=A non-inductive variable resistance of 3 decades of 10 x 10, 10 x 100 and 10 x 1000 ohms.C=A standard capacitance provided in the bridge in the form of a single decade of 10 x 0.01 mfd.
* Accessories at Extra :
* An audio frequency oscillator of 1 KC/S and a variable output of 10 volts is used as a source of supply.
* A pair of headphone of good sensitivity is used as a detector in the bridge network.

CALENDAR AND GRIFFITH BRIDGE DIAL TYPE

INSIF P-669A
*The 50 cm long slide wire of 1 ohm resistance is calibrated into 100 equal parts.
*14 coils are arranged in series in dial form each being of 1 ohm resistance.
*Terminals arranged for appropriate working of different instruments
*provided with sliding jockey on rod. Accuracy of adjustment + 0.05%.

PLATINUM RESISTANCE THERMOMETER BRIDGE

INSIF P-669B CALENDAR AND GRIFFITH BRIDGE
* (PLATINUM RESISTANCE THERMOMETER BRIDGE)
* Resistors are of manganin coils. Bridge wire is accurately calibrated.
* Vernier is attached to the sliding contact and fine slow motion available mercury contacts are fitted. Length of the slide wire is 30 cm
* Resistance values are 0.1, 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 12.8 and 0.15 ohm for 30 cm slide wire.
* Range of resistance measurable. Accuracy of adjustment + 0.01%.

DE SAUTY BRIDGE

p>INSIF P-671
* It is a simple form of giving maximum accuracy while comparing capacitance in term of resistance.
* The 1st arm (R1) consist of variable resistance in the form of 3-decades 10 x 10, 10 x 100 and 10 x 1000 ohms.
* The 2nd arm (R2) is also same as that of (R1). n unknown capacitor (C1) of capacity about (0.1 mfd to 1 mfd,
* any one single value whose value is not marked on the panel) is provided, which has to be connected (from outside) to the terminals of the 3rd arm.
* (We have to calculate the value of (C1) in the experiment.
* The 4th arm consists of known standard capacity of 10 x 0.1 mfd (i.e. C2).
* Terminals for the connection of headphone and bridge oscillator is provided on the panel.
* Supplied without headphone and oscillator.

KELVIN BRIDGES INSIF

P-672B(i)
Usage : This bridge is very suitable for the use of wires and cables manufacturers. It is being extensively used for finding the resistance of transformer windings, contact resistance of relays etc.
* Basic Structure : Terminals for battery, galvanometer, current and potential terminals are all provided on the Bakelite panel enclosed in a teak wood box.
* Range of Measurement : The bridge has a range of 0.2 micro ohm to 11ohms. Maximum Current : 10 amperes intermittently and 5 amperes continuously.
* Accuracy : + 0.05% + 1 small division of the slide wire
* Multiplying Ratios : A rotary switch furnishes 5 multiplying ratios of x100, x10, x1, x0.1 and x0.01.
* Standard Resistance : There are 10 coils of 0.01 ohm each arranged on a rotary dial plus a circular slide wire of total resistance 0.01 ohm and 500 sub-divisions. Each sub-division is equal to 0.00002 ohms on the normal range. Current Reversing Switch : A battery reversing switch is provided to reverse the current in the bridge to eliminate thermal effects.


INDUSTRIAL KELVIN BRIDGE

P-672B(i)
Usage : This bridge is very suitable for the use of wires and cables manufacturers. It is being extensively used for finding the resistance of transformer windings, contact resistance of relays etc.
* Basic Structure : Terminals for battery, galvanometer, current and potential terminals are all provided on the Bakelite panel enclosed in a teak wood box.
* Range of Measurement : The bridge has a range of 0.2 micro ohm to 11ohms. Maximum Current : 10 amperes intermittently and 5 amperes continuously.
* Accuracy : + 0.05% + 1 small division of the slide wire
* Multiplying Ratios : A rotary switch furnishes 5 multiplying ratios of x100, x10, x1, x0.1 and x0.01.
* Standard Resistance : There are 10 coils of 0.01 ohm each arranged on a rotary dial plus a circular slide wire of total resistance 0.01 ohm and 500 sub-divisions. Each sub-division is equal to 0.00002 ohms on the normal range. Current Reversing Switch : A battery reversing switch is provided to reverse the current in the bridge to eliminate thermal effects.


ADJUSTABLE D.C. CURRENT SOURCE

ACCESSORIES Kelvin Bridge
P-672C
* Basic Structure : The unit consist of a variac, a step down transformer, a bridge rectifier circuit and an ammeter of 0 - 10 amp to read current.
* D. C. Output : Approximate 0 - 10 V, Continuously adjustable to give a variable current of 0 - 10 Amperes depending upon external load.

MAXWELL Inductance BRIDGE

(The bridge has 6 dials) P-674
* P=R3=consists of std. decade dial of 3 dials- 10x10, 100x10 & 1000x10 
* Q=R4=consists of standard decade dial of 3 dials- 10x10, 100x10 & 1000x10 
* R2 =consists of standard decade dial of 3 dials-.01x10, 0.1x10 & 1x10 
* L1 =single dial Inductance Box (10mH to 100mH) is to be connected from outside.
* R2 =is connected in Series with L1 to from 3rd arm denoted as R
* L 2 =unknown Inductance whose value is to calculated is connected in the 4th arm S
* Terminals for oscillator, known inductance L1 & L2 , & Headphone.


PLATINUM RESISTANCE THERMOMETER

P-675 INSIF
* The resistors are of manganin coils bridge wire is accurately calibrated.
* Vernier is attached to the sliding contact and fine slow motion available mercury contacts are fitted.
* Length of the slide wire is 30 cm.
* Resistance values are 0.1, 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 12.8 and 0.15 ohm for 30 cm slide wire. Range of resistance measurable.

Conductivity Bridge (New) P-675B INSIF
with Built in Oscillator & Digital for Buzzer for Null point detection


SCHERING BRIDGE

P-677A INSIF
* P= R1=consists of ratio dials of 1, 10, 100 and 1000 ohms
* R2=consists of ratio dials of 1, 10, 100 and 1000 ohms
* C1 = Gang Capacitor of 500pf.
* Q = in this arm C1 is placed parallel with R2 to form 2nd arm cd
* R = C3= consists of three dial condenser box of 0.001x10, 0.01x10 & 0.1x10mfd.
* R = consists of three dial resistance box of 1x10, 10x10, 100x100 ohms.
* unknown Capacitor C1 whose value is to calculated is connected in series with r to form 4th arm S
* Terminal for headphone, unknown capacitor & oscillator for provided.


Schering Bridge (New)

P-677B
with Built in Oscillator & Digital for Buzzer.
* P= R1=consists of ratio dials of 1, 10, 100 and 1000 ohms
* R2=consists of ratio dials of 1, 10, 100 and 1000 ohms
* C1 = Gang Capacitor of 500pf.
* Q = in this arm C1 is placed parallel with R2 to form 2nd arm cd
* R = C3= consists of three dial condenser box of 0.001x10, 0.01x10 & 0.1x10mfd.
* R = consists of three dial resistance box of 1x10, 10x10, 100x100 ohms.
* unknown Capacitor C1 whose value is to calculated is connected in series with r to form 4th arm S
* Terminal for headphone, unknown capacitor & oscillator for provided.

Kohlraush Conductivity Bridge

INSIF P-673A
Object:The instrument is designed for the measurement of resistance electrolytes etc.
* Slide wire : is circular type and is calibrated from 0.01 to 10 ohms.
* Rotary dial : has six multipliers of 0.1, 1, 10, 100, 1000 and 10000.
* Range : of measurement is 0.01 to 100 K Ohm.
* Acc. of coils + 0.1%. Acc. of measurement + 1% at mid scale &+ 2% overall
* The position of slider is adjusted to the position of minimum sound.
* Terminals for supply and head phone detectors & detector key are provided.


Maxwell Inductance Capacitance Bridge New

INSIF P-674B
* with Built in Oscillator &, Buzzer as Null detector

(The bridge has 6 dials) P-674
* P=R3=consists of std. decade dial of 3 dials- 10x10, 100x10 & 1000x10 
* Q=R4=consists of standard decade dial of 3 dials- 10x10, 100x10 & 1000x10 
* R2 =consists of standard decade dial of 3 dials-.01x10, 0.1x10 & 1x10 
* L1 =single dial Inductance Box (10mH to 100mH) is to be connected from outside.
* R2 =is connected in Series with L1 to from 3rd arm denoted as R
* L 2 =unknown Inductance whose value is to calculated is connected in the 4th arm S
* Terminals for oscillator, known inductance L1 & L2 , & Headphone.


Ovens Bridge

P-674C INSIF
* Q = R3 = Four Dial resistance box 0.1x10, 1x10, 10x10, 100x10ohms.
* C1 = C2 = Single dial condenser Box of 0.1x10mfd.
* R2 = A variable 4-dial resistance box of 1x10, 10x10, 100x10 & 1000x10ohms.
* R1= Plug type resistance box 1 to 500 ohms.
* L1= Unknown Inductance whose value is to be calculated
* R1 is connected in series with L1 to form 1st arm P. R2 is connected in series with C2 to from 4th arm S.
* Terminal for Headphone, Unknown Inductance, Oscillator.

Precision Kelvin Double Bridge

P-672A INSIF
* Usage : It is a precision bridge for the measurement of low resistance.
* Basic Structure : A Bakelite panel enclosed in a teak wood box is used. Separate current and potential terminals, push buttons for battery and galvanometer terminals
* Range of Measurement : 1.1 to 0.00002 ohms.
* Maximum Current : 2 Amperes.
* Accuracy : + 0.1%.
* Multiplying Ratios : A single rotary switch furnishes 3 multiplying ratios of x1, x0.1 and x0.01.
* Standard Resistance : 10 coils of 0.1 ohm each are arranged on a rotary dial and a circular slide wire of total resistance 0.1 ohm and of 500 sub-divisions is equal to 0.0002 ohm on the normal range.


INDUSTRIAL KELVIN BRIDGE Accessories

ACCESSORIES
* Wooden Bench for Stand Wire P-672D
* it is an arrangement to hold wires, rods, strips etc.
* Separate current & potential terminals are provided.
* Distance between potential point is 50 cm.
* It can hold specimen upto ½”dia.

Spot Reflection galvanometer see cat no P-734 P-672E


Conductivity Bridge Electronic

Conductivity Bridge Electronic P-675C


Object:The instrument is designed for the measurement of resistance electrolytes etc.
* Slide wire : is circular type and is calibrated from 0.01 to 10 ohms.
* Rotary dial : has six multipliers of 0.1, 1, 10, 100, 1000 and 10000.
* Range : of measurement is 0.01 to 100 K Ohm.
* Acc. of coils + 0.1%. Acc. of measurement + 1% at mid scale &+ 2% overall
* The position of slider is adjusted to the position of minimum sound.
* Terminals for supply and head phone detectors & detector key are provided.

Portable Wheatstone Bridge

P-679A
For Precision Resistance measurements.
* Built in : Sensitive Galvanometer (10 u Amps) and a dry battery 4.5 volts.
* Series Arm : There are 4 decades of 10x1,10x10,10x100 & 10x1000 ohms.
* Range Multipliers : A single rotary switch furnishes 7 range multipliers of x 1000, x 100, x 10, x 1, x 0.1, x 0.01 and x 0.001.
* Range of Measurement : 0.001 ohm to 11.1 meg-ohms.
* Provision for using external battery provided.
* Accuracy : better than 0.05%
* Galvanometer : is provided
* Push Buttons : two push buttons for Battery & Galvanometer


Wheatstone Bridge (New)

P-679B
with Built in Oscillator & Digital for Buzzer
* Built in : Sensitive Galvanometer (10 u Amps) and a dry battery 4.5 volts.
* Series Arm : There are 4 decades of 10x1,10x10,10x100 & 10x1000 ohms.
* Range Multipliers : A single rotary switch furnishes 7 range multipliers of x 1000, x 100, x 10, x 1, x 0.1, x 0.01 and x 0.001.
* Range of Measurement : 0.001 ohm to 11.1 meg-ohms.
* Provision for using external battery provided.
* Accuracy : better than 0.05%
* Galvanometer : is provided
* Push Buttons : two push buttons for Battery & Galvanometer


Wheatstone Bridge

Meter Bridge or see P-792 P-679C


Wein Bridge (New)

P-680B INSIF
with Built in Oscillator & Digital for Buzzer
* R1= R2= consists of ratio dial of 1, 10m 100 & 10000 ohms
* R1= r2 = consists of 3 dial resistance box of 1x10, 10x10 & 100x10 
* C2 = consists of single dial capacitance box 0.1x10mgd.
* C1 = unknown condenser whose value to be calculated
* R1 = is connected in series with C1 to form 3rd arm ad.
* R2= is connected in series with C2 to form 4th arm ab.
* Terminals for connection of headphone, unknown condenser & oscillator


Callendar And Griffth Bridge (P-669B)

Callendar And Griffth Bridge (P-669B)

Bridge Carry Foster "INSIF" (P-670)

Bridge Carry Foster "INSIF"  (P-670)

De Sauty Bridge Digital (P-671B)

De Sauty Bridge Digital (P-671B)

Student Kelvin Bridge (P-672C)

Student Kelvin Bridge (P-672C)

Conductivity Bridge New (P-675B)

Conductivity Bridge New (P-675B)

New Type in Built in Oscillator (P-676B)

New Type in Built in Oscillator (P-676B)

Schering Bridge in Built Oscillator (P-677B)

Schering Bridge in Built Oscillator (P-677B)

Weign Bridge (P-680A)

Weign Bridge (P-680A)

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