125A Datasheet, PDF (1/2 Pages) Hammond Manufacturing Ltd. – Push-Pull Output - General Purpose

Push-Pull Output - General Purpose (125A-E Series)
UNIVERSAL PUSH-PULL
"CLASSIC" TUBE OUTPUT TRANSFORMERS
• Designed for general purpose or replacement use in push-pull tube output circuits.
• For single ended use, see our 125 SE series - optimized for single ended tube output circuits.
• Frequency response: 150 Hz. - 15 Khz (+/- 1db max. ref. 1 Khz)
• Open style with minimum 5" long primary leads, secondary solder lugs for convenient secondary connections.
• Tables provided with each transformer listing 90 pre-calculated impedance ratios.
• Primary impedances from 1,200 to 25,000 Ohms and secondary impedances from 1.5 to 15 Ohms (see chart below).
Part No.
Audio
Watts
Max D.C. Bias
(ma)
Primary
Inductance
Henrys
A
Dimensions (Inches)
B
C
D
G Mtg.
Hole
125A
3
25
14.94
2.06 1.25 1.19 1.75 0.187
125B
5
45
8.97
2.38 1.38 1.38 2.00 0.187
125C
8
60
5.60
2.81 1.50 1.69 2.38 0.187
125D 10
70
4.48
3.25 1.75 2.00 2.81 0.187
125E 15
80
2.99
3.69 2.00 2.31 3.13 0.187
Wt.
Lbs.
0.19
0.3
0.5
1
1.5
Schematic & Hook Up Data
Blue
(Plate)
Red
(B+)
Brown
(Plate)
PRI
6
5
4
3
2
1
SEC
Connect
Speaker to
(Sec.
Lugs)
Voice Coil Impedance (Ohms)
1.5
2
3.2
4
6
8
12
15
Resulting Total Primary Impedance (Blue Wire to Brown Wire)
1 & 2 27K
-
-
-
-
-
-
-
2 & 3 18K
24K
-
-
-
-
-
-
3 & 4 16.5K 22K
-
-
-
-
-
-
4 & 5 10K
13.5K 21.6K 27K
-
-
-
-
5 & 6 8.5K 11K
18K 22K
-
-
-
-
1 & 3 5.4K 7.2K 11.5K 15K 21.6K
-
-
-
2 & 4 4.2K 5.6K 9K
11.2K 16.8K 22.5K
-
-
3 & 5 3.3K 4.4K 7K
8.8K 13.2K 17.6K 26.4K
-
4 & 6 2.4K 3.2K 5.1K 6.4K 9.6K 12.8K 19.2K 24K
1 & 4 2.15K 2.9K 4.6K 5.8K 8.7K 11.6K 17.4K 21.5K
2 & 5 1.55K 2.05K 3.3K 4.1K 6.15K 8.2K 12.3K 15.5K
3 & 6 1.3K 1.7K 2.7K 3.4K 5.1K 6.8K 10.2K 12.8K
1&5
-
1.4K
2.2K 2.8K 4.2K 5.6K 8.4K 10.2K
2&6
-
-
1.7K 2.1K 3.15K 4.2K 6.3K 8K
1&6
-
-
1.2K 1.5K 2.3K 3.0K 4.5K 5.6K
CANADA
Guelph, Ontario [phone]
St. Laurent, Quebec [phone]
USA
©
Cheektowaga, NY [phone]
www.hammondmfg.com
88
EUROPE
Basingstoke, UK 01256 812812
AUSTRALIA
Queenstown, Australia 61-8-8240-2244