CALCULATOR

TRANSFORMER SIZE / POWER CALCULATOR

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CALCULATOR RESULTS

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tramsformer

height

length

width

RM4

12.1

12.8

12.8

P11/7

7.1

11.3

11.3

EF12.6

9.6

19.4

19.4 RECOMMENDED

U10

17

16.2

16.2

E16

13.45

16.15

16.4

EF16

15.6

17.8

20 RECOMMENDED

RM5

10.7

18.9

14.15

P14/8

8.5

14.3

14.3

RM6

12.5

19.9

19.9

E20

12.5

20

17.6

EF20

16.9

20.8

20.8 RECOMMENDED

P18

11.7

17.9

17.9

U15

21.95

22.95

16.4

EFD15

8.3

16.7

20.7

RM8

16.4

23.3

23.3

P22

13.4

22

22

RM10

19.3

23.2

31

ETD29

28.8

35.2

35.2 RECOMMENDED

EF25

25.6

24.1

25.1

EFD20

10.5

21.7

25.7

ETD29

28

33.5

36.7

ETD34

34

37.9

42.2 RECOMMENDED

RM12

24.5

28.4

38.2

P30

18.8

30.5

30.5

EFD25

16.2

25.2

26.2

ETD34

36.9

39.6

42.8

ETD39

40.1

44.6

47.8 RECOMMENDED

ETD44

42.1

49.6

52.2

P36

22

36.2

36.2

E30

22.6

35.4

31.4

E42

34.2

39

29.2

EFD30

16.2

29.2

31.2

ETD44

42.1

49.6

52.2

ETD49

44.6

54.5

57.2

E55

51.6

37.35

43.95

ETD54

50.85

61.5

61.4

ETD59

49.4

66.9

66.4

E65

53

58.5

65

EI24 x 8.6

22.4

24

19

EI28 x 13.5

28

28

25

EI30 x 12.5

23.6

32.7

27.8

EI30 x 18

29

32.8

27.7

EI35 x 13.5

32.1

35

32.7

212 9/16" Square

35.7

42.9

29

EI41 x 15

32.7

41

33

212 9/16" x 11/16"

35.7

42.9

34

EI43 x 14.5

33.8

46.1

39

EI48 x 16

31.7

48

40.2

EI48 x 20

39.4

48.2

38

EI57 x 19

43.9

57

47.5

130 11/16" x 13/16"

43.7

52.4

40

120 3/4" Square

47.6

57.2

40

EI57 x 19

43.9

57

47.5

120 3/4"x1"

47.6

57.2

44

279 7/8" Square

55.6

66.7

43

EI66 x 25.7

49.8

66

55

279 7/8" x1"

55.6

66.7

47

EI66 x 28

54.2

66

55

279 7/8" x1.25"

66.7

55.6

60

279 7/8" x1.5"

66.7

55.6

60

43 1" Square

76.2

63.5

50

43 1" x1.25"

76.2

63.5

55

EI76 x 38

70.7

76.35

63.5

43 1" x1.7"

76.2

63.5

68

EI76 x 46

74.6

76.2

63.5

174 1.25"x1"

95.3

79.4

57

EI96 x 31.8

71.1

96

80

174 1.25" Square

95.3

79.4

63

174 1.25"x1.75"

95.3

79.4

72

174 1.25"x1.97"

95.3

79.4

85

173 1.5" Square

114.3

95.3

75

180 1.75"x0.75"

133.3

111.1

64

174 1.25"x3"

95.3

79.4

110

EI114 x 45

117

114

95

173 1.5"x2.25"

114.3

95.3

97

173 1.5"x3"

114.3

95.3

113

180 1.75"x2"

133.3

111.1

97

EI133 x 60

111.4

133.3

111.1

173 1.5"x3.5"

114.3

95.3

128

EI133 x 75

127.3

133.3

111.1

180 1.75"x3"

133.3

111.1

122

EI150x50

106.8

150.1

125.1

P 2"x2.5"

152.4

127

114

P 2"x3"

152.4

127

128

P 2"x3.5"

152.4

127

140

The above results are the transformer options, all of which meet your specified design criteria. The dimensions are for the finished transformer with cores, wire & tape; not just the bobbin.