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.
1
5
•
Net weight: 0.6 oz. (148 Series) & 1.0 oz. (149 Series).
2
3
4
PRI
Figure 1
Audio
6
7
8
1
2
5
7
8
Part
No.
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
Application
Input
Input
Input
Input
Driver
Driver
Driver
Driver
Driver
Driver
Driver
Output
Output
Output
Output
Driver
Driver
Driver
Driver
Driver
Output
Output
Output
Output
Hybrid
Nominal Impedance
Primary
150/600
150
50000
200K
500
1500
3000
4000
6000
10000
20000
500 C.T.
600 C.T.
4000 C.T.
5000 C.T.
160
300
450
600
1000
200 C.T.
600 C.T.
600 C.T.
150/600
600 C.T.
Secondary
600/2400
400/1600
250/1000
1000
125/500
125/500
250/1000
500/2000
500/2000
500/2000
250/1000
3.2
150 C.T.
3.2
500 C.T.
20/80
30/120
40/160
150/600
60/240
3.2
150 C.T.
600 C.T.
8
300/1200
Pri D.C.
(*1) ma.
1.9
3.8
0
0
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
4
4
4
4
D.C. Resistance +/- 15% (*2)
Primary
45
11.3
1760
1760
79
220
480
540
850
1700
2230
41
45
380
410
24
41
52
92
155
19
53
53
53
53
Secondary
300
200
25.4
6.2
60
58
107
230
230
238
123
0.34
14
0.34
52
6.5
9.7
19
58
24
0.4
17
70
95
63
Output
Dwg.
Milliwatts Figure
300
300
12
3
75
75
75
75
75
75
50
300
300
300
300
200
200
200
200
200
1000
1000
1000
1000
1000
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
4
SEC
PRI
SEC
Figure 5
5
1
4
6
7
8
PRI
SEC
Figure 2
1
4
5
8
1
2
3
4
PRI
SEC
Figure 6
5
8
1
3
4
5
6
7
8
PRI
SEC
Figure 3
1
2
4
5
8
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
secondary windings the figure shown is with the windings connected in series).
PRI
SEC
Figure 7
PRI
SEC
Figure 4
Basingstoke, UK 01256 812812
Queenstown, Australia 61-8-8240-2244
EUROPE
www.hammondmfg.com
AUSTRALIA
Guelph, Ontario (519) 822-2960
St. Laurent, Quebec (514) 343-9010
Cheektowaga, NY (716) 630-7030
CANADA
USA
73
©
P.C. Board & Chassis Mount (140-141 Series)
LOW PROFILE - P.C. BOARD MOUNT
AUDIO TRANSFORMERS
•
•
•
•
Pin type (0.25" length & 0.035" diameter), P.C. board mount
Low profile, open type construction
Frequency response 200 Hz. - 15 Khz. (+/- 2 db, ref. @ 1 Khz.)
Net weight 0.6 oz.
1
2
3
PRI
SEC
6
5
4
Part
No.
141B
141D
141F
141H
141M
141P
Nominal Impedance
Primary
200K
3000 C.T.
25K
600 C.T.
30K
1200 C.T.
Secondary
1000
1000 C.T.
50
600 C.T.
1200 C.T.
8
Max. Pri.
D.C. ma
0
1
2
2
2
2
D.C. Resistance
Primary
3775
120
1645
32
1100
50
Secondary
85
51
65
45
47
0.45
Output
Milliwatts
4
150
100
150
100
150
Audio
CHASSIS MOUNT - SHIELDED
AUDIO TRANSFORMERS
• 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.
Part
No.
140A
140B
140C
140H
140K
140M
140N
140P
140Q
Application
Voice Coil to Single Grid
Dyn. MIC. to Single Grid
MIC. to Single Grid
Bridging Line to P.P. Grids
MIC. to Single Grid
CRYS, MIC. to Base
Dyn. MIC to Base
Line to Base
Line to Line
Nominal Impedance
Primary
Secondary
4
60000
30
60000
50
60000
10000
40000 C.T.
150
60000
100K
1500
50
1500
150/600
600/2400
600 C.T.
600 C.T.
Overall Turns Ratio
Pri. to Sec.
1:122
1:45
1:34.5
1:2
1:2
8:1
1:5.5
1:2
1:1
Guelph, Ontario (519) 822-2960
St. Laurent, Quebec (514) 343-9010
©
Cheektowaga, NY (716) 630-7030
CANADA
USA
www.hammondmfg.com
Basingstoke, UK 01256 812812
Queenstown, Australia 61-8-8240-2244
EUROPE
74
AUSTRALIA
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