P.C. Board Mount (148-149 Series)
148 Series
P.C. BOARD MOUNT
AUDIO TRANSFORMERS
149 Series
• Pin type (0.25" length & 0.025" square), P.C. board mount.
• Economical, open type, horizontal bracket construction. 149 Series includes clinching lugs for extra mounting
strength.
• Frequency response 200 Hz. - 15 Khz. (+/- 1 db, ref. @ 1 Khz.).
• Total distortion approximately 2% for drivers and 1% for outputs at 200 Hz., decreasing at higher frequencies.
• Insertion loss less than 1/2 db.
• Bifilar wound for balanced capacitive and resistance characteristics, on pin bobbins for standard 0.2" grid pin spacing.
• Insulation test 250V RMS.
• For rugged epoxy cast type units refer to our 102, 104, 106, or 107, 108 & 109 series.
• Net weight: 0.6 oz. (148 Series) & 1.0 oz. (149 Series).
1
2
5
6
1
2
4
5
7
8
Nominal Impedance
D.C. Resistance +/- 15% (*2)
Part
No.
Pri D.C.
(*1) ma.
Output
Milliwatts Figure
Dwg.
Application
Primary Secondary
3
4
7
8
Primary
45
11.3
1760
1760
79
Secondary
300
200
25.4
6.2
148A
148B
148C
148D
148E
148F
148H
148K
148M
148Q
148R
148T
148V
148X
148Y
149C
149E
149F
149G
149H
149Q
149S
149T
149U
149V
Input
Input
Input
150/600
150
50000
200K
600/2400
400/1600
250/1000
1000
1.9
3.8
0
300
300
12
3
75
75
75
75
75
1
2
2
3
2
2
2
2
2
2
2
4
5
4
5
2
2
2
2
2
4
5
5
6
7
PRI
SEC
Figure 5
PRI
SEC
Input
0
Figure 1
Driver
Driver
Driver
Driver
Driver
Driver
Driver
Output
Output
Output
Output
Driver
Driver
Driver
Driver
Driver
Output
Output
Output
Output
Hybrid
500
1500
3000
4000
125/500
125/500
250/1000
500/2000
500/2000
500/2000
250/1000
3.2
18
11.6
7.5
6.5
5.3
4.1
2.4
2.1
1.9
0.8
0.7
56
42
33
29
22
7
60
220
480
540
850
1700
2230
41
58
1
2
5
6
107
230
230
238
123
0.34
14
5
8
1
4
6000
10000
20000
500 C.T.
600 C.T.
4000 C.T.
75
50
3
4
7
8
300
300
300
300
200
200
200
200
200
1000
1000
1000
1000
1000
150 C.T.
3.2
45
PRI
SEC
PRI
SEC
380
410
24
0.34
52
6.5
Figure 6
Figure 2
5000 C.T. 500 C.T.
160
300
450
600
1000
200 C.T.
600 C.T.
600 C.T.
150/600
20/80
30/120
40/160
150/600
60/240
3.2
150 C.T.
600 C.T.
8
41
9.7
1
4
5
8
5
6
52
19
1
92
58
3
4
155
19
24
0.4
PRI
SEC
Figure 3
7
8
4
4
4
4
53
17
53
70
1
2
4
53
95
5
8
PRI
SEC
600 C.T. 300/1200
53
63
Figure 7
NOTES:
*1) For output transformers the current figure is for maximum unbalanced current
*2) D.C. resistance shown is for the total primary or secondary windings (ie: if unit contains multiple primary or
PRI
SEC
secondary windings the figure shown is with the windings connected in series).
Figure 4
EUROPE
CANADA
Basingstoke, UK 01256 812812
Guelph, Ontario (519) 822-2960
www.hammondmfg.com
73
St. Laurent, Quebec (514) 343-9010
AUSTRALIA
Queenstown, Australia 61-8-8240-2244
USA
Cheektowaga, NY (716) 630-7030
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