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Product -> Electrical & Electronics

Starlac offer wide range of Physics Instruments like Electronics Instruments for Educational Institution like School, Colleges. Starlac Electrical & Electronics Instruments range are Resistance Boxes, Condenser Boxes, Potentiometers, Electronic Cell, Oscilloscope.

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Resistance Box (Plug Type)
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Resistance Box (Plug Type)   (EE - 501)

Resistance Box Plug Type: Superior quality Heavy Brass metal blocks size 1/2" are bound to bakelite plate by means of nuts and screws securing rigid fixation and eliminating any chance of contact error creping due to loosening of plugs and lugs which are cut to fine taper and are interchangeable. Plug heads are machine moulded, of heavy insulated bakelite in beautiful shapes. The boxes are made of Teak-wood and nicely polished.

Great care is taken in preparing the wire wound resistance. Selected double Covered Eureka Wire is wound in bakelite spools. Sufficient ageing and Heat Treatment is processed through to avoid any moisture effects. Solder Joints are sealed after calibration. All Resistors are calibrated on imported Testing Bridge Accuracy 0.1%.

Resistance in Ohms

Total Resistance

No. of Coils

(a)

0.1-1

2

5

(b)

0.1-5

11

8

(c)

0.1-10

21

9

(d)

1-5

10

4

(e)

1-10

20

5

(f)

1.50

110

8

(g)

1-100

210

9

(h)

1-500

1110

12

(i)

1-1000

2110

13

(j)

1-5000

11110

16

(k)

1-10000

21110

17


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Resistance Box (Dial Type)
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Resistance Box (Dial Type)   (EE - 502)

Resistance Box Dial Type : The dial studs are machine cut from phosphorous bronze and laminated bush contact are made from hardened copper phosphot bronze leaves. The laminated bushed are connected to the main central contact. Individual resistors are mounted separately. The values of resistors are machine engraved or Screen Painted. Technical Details : Double covered Eureka wire is wounded on Bakelite spools. Each resistor is processed for ageing and heat treatment to avoid shifting of the values and tested individually to accuracy after fixing Carbon Resistance. Resistance are calibrated on imported testing Bridge Accuracy +0.1%

Single Dial Resistance Boxes

Resistance Box Dial Type : The dial studs are machine cut from phosphorous bronze and laminated bush contact are made from hardened copper phosphot bronze leaves. The laminated bushed are connected to the main central contact. Individual resistors are mounted separately. The values of resistors are machine engraved or Screen Painted. Technical Details : Double covered Eureka wire is wounded on Bakelite spools. Each resistor is processed for ageing and heat treatment to avoid shifting of the values and tested individually to accuracy after fixing Carbon Resistance. Resistance are calibrated

Single Dial Resistance Boxes

Ranges

Total Res. in ohms

(a)

0.1

1

(b)

1

10

(c)

10

100

(d)

100

1000

(e)

1000

10000

Two Dial Resistance Boxes

Ranges

Total Res. in ohms

(f)

0, 1-1

11

(g)

1, 10

110

(h)

10, 100

1,110

(i)

100 and 1000

11,000

Three Dial Resistance Boxes

Ranges

Total Res. in ohms

(j)

0.1, 1, 10

111

(k)

1, 10, 100

1,110

(l)

10, 100, 1000

11,110

Four Dial Resistance Boxes

Ranges

Total Res. in ohms

(m)

0.1, 1, 10, 100

1,111

(n)

1, 10, 100, 1000

11,110

Five Dial Resistance Boxes

Ranges

Total Res. in ohms

(o)

0.1, 1, 10, 100 and 1000

11,111

(p)

1, 10, 100, 1000 and 10,00021,110


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Condenser Boxes (Dial Type)
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Condenser Boxes (Dial Type)   (EE - 503)

These are made in single or more dials having condensers joined in parallels Each dial contains ten segment, High grade paper condenser housed in a teak wood case with engraved bakelite top or in Metal case with Screen Printed Top.
Single Dial Condenser Box

Value in m.f-d

Total Value in m.f.d

(a)

0.001

0.01

(b)

0.01

0.1

(c)

0.1

1

(d)

1

10

Two Dials Condenser Box

Value in m.f-d

Total Value in m.f.d

(e)

0.001 & 0.01

0.11

(f)

0.01 & 0.1

1.1

(g)

0.1 & 1

11

Three Dials Condenser Box

Value in m.f-d

Total Value in m.f.d

(h)

0.001, 0.01 & 0.1

1.11

(i)

0.01, 0.1 & 1

11.1

Four Dials Condenser Box

Value in m.f-d

Total Value in m.f.d

(j)

0.001, 0.01, 0.1 & 1

11.11


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Fixed Condensers
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Fixed Condensers   (EE - 504)

Superior Quality of paper condenser enclosed in Bakelite case and Capacity value marked, fitted with two terminals.

Capacity in

A

B

C

D

E

F

G

M.F.D.

0.001 to 0.1

0.2

0.5

1

2

5

10


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Post Office Box (Plug Type)
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Post Office Box (Plug Type)   (EE - 505)

Post Office Box Plug Type : Having three or four pairs of ratio coils of (10, 100, 1000 ohms) and 16 series coils of selected double covered wire enclosed in a teakwood case with Sunmica Top. The blocks are made of brass size 1/2" (Square Rod) nicely golden lacquered and resistance values are engraved on them. The top is manufactured from Bakelite. Two tapping keys are provided for Battery and Galvanometer. All plugs are interchangeable. All coils are calibrated on Imported Testing Bridge Accuracy 0.1%

(a) P.O. Box 3 Ratio

: Resistance 1-5000 ohms.
: (Ratio 10, 100, 1000 ohms.)

(b) P.O. Box 4 Ratio

: Resistance 1-5000 ohms.
: (Ratio 1, 10, 100, 1000 ohms.)


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Post Office Box (Dial Type)
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Post Office Box (Dial Type)   (EE - 506)

Post Office Box Dial Type : The technical and constructed details are similar to Post Office Box Plug Type (Cat No. S105). Double covered wire is wound on bakelite spools and moisture free. The finish accuracy, working and workmanship is equally good as other All coils are calibrated on imported Testing Bridge Accuracy 0.1%. Serial Dial 1, 10, 100, 1000.

(a) P.O. Box 5 Dials : Having one ratio dial with Galvanometer & Battery.

(b) P.O. Box 6 Dials : Having two ratio dial with Galvanometer and Battery.


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Sonometres
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Sonometres   (EE - 507)

With brass or Aluminium fitting & teak wood polished base.


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Boy' Law App.   (EE - 508)

Complete with double rods and glass tubes.


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Inclined Plane
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Inclined Plane   (EE - 509)

Fitted on New-Wood board size 3/4 x 4" with Pan, Big Arc and Iron roller.
(a) Reading Telescope: cat no. 1030 Complete with 175 mm objectives Eye piece 10x fitted on heavy base.
(b) cat no 1032 -do- as above but special clamp for vertical movement with clamp and scale.


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Tangent Galvanometer
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Tangent Galvanometer   (EE - 510)

Having Brass parts and Permanent magnet compass with bakelite, 4 m.m. socket terminals.


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Circular Coil
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Circular Coil   (EE - 510/1)


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Tangent Galvanometer   (EE - 511)

But having aluminium parts, simple magnet compass and brass terminals.


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Extra compass for above
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Extra compass for above   (EE - 512)


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Rheostats
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Rheostats   (EE - 513)

Rheostats, Open type Single tube : Rheostats are made with a variety of resistance & current carrying capacity so as to satisfy every need. They are wound with heavely oxodised eurika resistance wire upon a porcelene tube dia 44 mm aprox. The tube is carrying upon bakalite ridder and the heavy duty sliding contact is of the phospor bronze with brass rod. 4 mm socket terminals are fitted, allowing for rheostat or potentiometer connection. Total resistance and maximum current capacity is marked on the slidder. Total

Permanent current loading should not exceed 75% of the marked values.Accuracy : The actual resistance of Rheostat shall be +20% -5% of the rated resistance as per our resistance chart. (as per ISI specification no. IS : 9051 S. No. 10.3)

TABLE NO. 1

Ube

6"

8"

10"

12"

14"

16"

18"

20

Length (cm)

15

20

25

30

35

40

45

50

AMPS

Ω

Ω

Ω

Ω

Ω

Ω

Ω

Ω

A.

5.0

4.5

6.5

9

11

13

15

18

20

B.

4.2

8

12

16

20

24

26

32

35

C.

3.3

11

16

22

27

33

38

44

50

D.

2.8

15

22

30

37

45

52

60

67

E.

2.3

23

34

46

57

70

80

90

100

F.

1.8

37

55

74

92

110

128

148

165

G.

1.6

50

75

100

125

150

175

200

225

H.

1.4

64

96

128

160

190

220

250

290

I.

1.2

89

135

180

225

270

315

355

395

J.

1.0

116

175

235

290

350

405

460

515

K.

0.8

160

240

320

400

480

560

640

720

L.

0.6

270

400

540

670

800

930

1070

1200

M.

0.5

400

600

800

1000

1200

1400

1600

1800

N.

0.4

660

975

1300

1625

1950

2275

2640

2950

O.

0.3

1150

1700

2250

2850

3400

3950

4550

5150


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Rheostat
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Rheostat   (EE - 514)

Single tube covered (perforated)
Same as cat no 1001 but tube dia is 56 mm approx and totaly covered with powder coated zali to protect the rheostat .

TABLE NO. 1

Ube

6"

8"

10"

12"

14"

16"

18"

20

Length (cm)

15

20

25

30

35

40

45

50

AMPS

Ω

Ω

Ω

Ω

Ω

Ω

# . ..=0070

3750

O.

0.3

1350

2100

2850

3600

4380

5100

6000

6570


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