The Audio Type Transformers 140 & 143 to 146 series. Chassis mount audio transformer.

 

140 Picture 143-146 Line Art

140 and 143-146 Series

 

Key Features (140 Series):

  • Insulated leads 5" long minimum

  • Stamped steel case (Diameter of 1.25" and height of 1") for excellent shielding - low hum pick-up.

  • Frequency response 70 Hz. - 11 Khz. (+/- 1 db, ref. @ 1 Khz.)

  • Case hole mounting centers are 1.6"

  • Net weight 2 oz.

P#

Application

Nominal Impedance

Overall Turns Ratio

Primary

Secondary

Pri. to Sec.

EID-140A

Voice Coil to Single Grid

4

60000

1:122

EID-140B

Dyn. MIC. to Single Grid

30

60000

1:45

EID-140C

MIC. to Single Grid

50

60000

1:34.5

EID-140H

Bridging Line to P.P. Grids

10000

40000 ct

1:2

EID-140K

MIC. to Single Grid

150

60000

1:2

EID-140M

CRYS, MIC. to Base

100K

1500

8:1

EID-140N

Dyn. MIC to Base

50

1500

1:5.5

EID-140P

Line to Base

150/600

600/2400

1:2

EID-140Q

Line to Line

600 ct

600 ct

1:1

 

Key Features (143-146 Series):

  • Economical, open, two hole horizontal bracket mount.

  • Insulated, color coded flexible leads, 4" long minimum (143, 144 & 145 Series) or 3" long minimum (146 Series).

  • For a similar, P.C. board mount version, refer to our 148 & 149 Series.

  • Frequency response 150 Hz. to 15 Khz. (+/- 1 db, reference 1000 Hz.)

  • When operating at impedances below nominal, power capability and the frequency spectrum are proportionately lower, conversely, at higher impedances power capability and frequency spectrum will be proportionately higher.

  • Net weight: 0.5 oz. (143, 144 Series) & 1.4 oz. (145 Series).

P#

Applicaton

Nominal Impedance

Pri. D.C. (*1) ma

D.C. Resistance
+/- 15%

Output mW

Primary

Secondary

Primary

Secondary

EID-143B

Input

3.2

4000

0

0.4

245

15

EID-143D

Input

200K

1000

0

4500

30

25

EID-143H

Driver

1500

500 ct

4

111

24

30

EID-143J

Driver

3000

1000 ct

2.6

265

53

30

EID-143L

Driver

10000

200 ct

1.5

720

9

30

EID-143N

Driver

10000

2000 ct

1.5

720

89

30

EID-143R

Driver

25000

600 ct

1

1890

25

30

EID-144B

Output

200 ct

3.2

10

10

0.33

150

EID-144D

Output

300 ct

3.2

9

15

0.33

150

EID-144F

Output

500 ct

3.2

6

27

0.33

150

EID-144G

Output

500 ct

8

6

27

0.9

150

EID-144H

Output

500 ct

50

6

28

7.3

150

EID-144I

Output

600 ct

150 ct

6

45

8.2

150

EID-144P

Output

10000

3.2

5

575

0.5

50

EID-144Q

Output

10000

8

5

575

0.9

50

EID-144S

Output

20000

8

3.5

1240

0.9

50

EID-145A

Driver

100

200 ct

45

14

19

100

EID-145B

Driver-Output

600

600

18

30

38

200

EID-145C

Input

50000

1500 ct

1

2400

52

50

EID-145D

Input

200K

1000

0.5

3600

33

10

EID-145E

Input-Output

600 ct

600 ct

5

65

83

200

EID-145F

Driver

600 ct

200 ct

20

45

9

135

EID-145G

Driver

2000

200 ct

12

140

9

135

EID-145H

Driver

2000

500 ct

12

148

17

135

EID-145J

Driver

4000

600 ct

8

340

24

135

EID-145L

Driver

4000

2600 ct

8

340

100

135

EID-145N

Driver

10000

2000 ct

5

700

89

135

EID-145O

Driver

15000

200 ct

4

850

10

135

EID-145P

Driver

20000

1000 ct

3.5

1180

50

135

EID-145R

Driver

20000

2000 ct

3.5

1180

89

135

EID-146B

Output

48 ct

3.2

20

2.4

0.3

700

EID-146C

Output

48 ct

8

20

2.4

0.7

700

EID-146D

Output

100 ct

3.2

14

4.4

0.3

700

EID-146E

Output

100 ct

8

14

4.4

0.7

700

EID-146F

Output

250 ct

3.2

8

11

0.3

700

EID-146G

Output

250 ct

8

8

11

0.7

700

EID-146H

Output

500 ct

3.2

6

26

0.3

700

EID-146I

Output

500 ct

8

6

26

0.7

700

EID-146J

Output

1000 ct

3.2

4

56

0.3

700

EID-146K

Output

1000 ct

8

4

56

0.7

700

EID-146N

Output

2000 ct

8

3

97

0.7

700

EID-146S

Output

4000 ct

8

2

220

0.7

700


Mechanical & Schematic Data:

143-146 Line Art

Series No.

Dimensions

A

B

C

D

EID-143...

1.35

0.69

0.69

1.06

EID-144...

1.35

0.69

0.69

1.06

EID-145...

1.63

0.88

0.81

1.38

EID-146...

1.63

0.88

0.81

1.38


143-146 Schematic 143-146 Schematic 143-146 Schematic143-146 Schematic

 

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