10/4/22, 10:30 AM
Audio Open Frame (148 Series) - Hammond Mfg.
Quality Products. Service Excellence.
Audio Open Frame 148 Series
PC Board Mount
Features
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 and 109 series.
Net weight: 0.6 oz. (148 Series) & 1.0 oz. (149 Series).
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).
3) Pins are not labeled on the units, but a dot indicates the position of pin 1. The rest of the
pins can be determined after reviewing the schematic below.
https://www.hammfg.com/electronics/transformers/audio/148
1/2
10/4/22, 10:30 AM
Audio Open Frame (148 Series) - Hammond Mfg.
Max. Primary
D.C. Resistance
Nominal Impedance
D.C. current
(Ohms) +/- 15%
(Ohms)
(ma.)
(See Note 2)
Schematic
Output
Drawing
Part No.
Applicaton
Primary
Secondary
(See Note 1)
Primary
Secondary
(Milliwatts)
Figure
148A
Input
150/600
600/2400
1.9
45
300
300
1
148B
Input
150
400/1600
3.8
11.3
200
300
2
148C
Input
50000
250/1000
0
1760
25.4
12
2
148D
Input
200K
1000
0
1760
6.2
3
3
148E
Driver
500
125/500
18
79
60
75
2
148F
Driver
1500
125/500
11.6
220
58
75
2
148H
Driver
3000
250/1000
7.5
480
107
75
2
148K
Driver
4000
500/2000
6.5
540
230
75
2
148M
Driver
6000
500/2000
5.3
850
230
75
2
148Q
Driver
10000
500/2000
4.1
1700
238
75
2
148R
Driver
20000
250/1000
2.4
2230
123
50
2
148T
Output
500 ct
3.2
2.1
41
0.34
300
4
148V
Output
600 ct
150 ct
1.9
45
14
300
5
148X
Output
4000 ct
3.2
0.8
380
0
300
4
148Y
Output
5000 ct
500 ct
0.7
410
52
300
5
Data subject to change without notice
© 2022. Hammond Manufacturing Ltd. All rights reserved.
https://www.hammfg.com/electronics/transformers/audio/148
2/2
很抱歉,暂时无法提供与“148H”相匹配的价格&库存,您可以联系我们找货
免费人工找货