1645A Hammond Manufacturing, 1645A Datasheet
1645A
Manufacturer Part Number
1645A
Description
Push-pull Audiophile Tube Output Transformer
Manufacturer
Hammond Manufacturing
Series
Ar
Type
Standardr
Datasheet
1.1650E.pdf
(2 pages)
Specifications of 1645A
Primary Winding(s)
Single, with Multiple Taps
Secondary Winding(s)
Single, Center Tap
Mounting Type
Chassis Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Parallel Output Voltage @ Current
-
Series Output Voltage @ Current
-
Maximum Power
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Push - Pull
•
•
•
•
•
•
•
up of secondary loads)
1650E (70 Hz. to 30 Khz. +/- 1 db max. - ref. 1 Khz.)
does NOT have primary screen taps and will not support "Ultra-Linear" applications.
NEW & Improved version of our 1608-1650 series output transformers (re-designed secondaries for easy hook-
Designed for push-pull tube output circuits.
Enclosed (shielded), 4 slot, above chassis Type "X" mounting.
Frequency response 30 Hz. to 30 Khz. at full rated power (+/- 1 db max. - ref. 1 Khz) minimum. Except the
Insulated flexible leads 8" min.
All units (except the 1650G) include 40% screen taps for Ultra-Linear operation (if desired).
Typical applications - Push-Pull: triode, Ultra-Linear pentode, and tetrode connected audio output. The 1650G
©
Number
1650WA
1650HA
1650KA
1650NA
1650RA
1650FA
1650PA
1650TA
1650G
1608A
1609A
1615A
1650E
1620A
1645A
St. Laurent, Quebec (514) 343-9010
Part
Cheektowaga, NY (716) 630-7030
Guelph, Ontario (519) 822-2960
Audio
(RMS)
Watts
100
120
280
10
10
15
15
20
25
30
35
40
50
60
60
CANADA
Audiophile - Output (1608-1650 "A" Series)
USA
Impedance
10,000 C.T.
8,000 C.T.
5,000 C.T.
8,000 C.T.
6,600 C.T.
7,600 C.T.
5,000 C.T.
6,600 C.T.
6,600 C.T.
3,400 C.T.
4,300 C.T.
6,600 C.T.
5,000 C.T.
1,900 C.T.
1,900 C.T.
Primary
"CLASSIC" TUBE TYPE - ULTRA-LINEAR
Max. DC
Per Side
100 ma.
100 ma.
100 ma.
100 ma.
158 ma.
128 ma.
128 ma.
200 ma.
200 ma.
318 ma.
318 ma.
200 ma.
318 ma.
403 ma.
806 ma.
PUSH - PULL "EASY HOOK-UP"
OUTPUT TRANSFORMERS
www.hammondmfg.com
3.5/8/16/250/500
Impedance
4-8-16-70 V
Secondary
4-8-16
4-8-16
4-8-16
4-8-16
4-8-16
4-8-16
4-8-16
4-8-16
4-8-16
4-8-16
4-8-16
4-8-16
4-8-16
92
2.50
2.50
2.50
2.50
2.50
2.50
2.50
3.13
3.13
3.13
3.13
3.13
3.75
3.75
4.38
A
2.75
2.75
3.25
3.25
3.50
3.50
3.75
3.75
4.00
4.00
4.25
4.25
4.25
4.50
7.50
B
Dimensions (Inches)
3.06
3.06
3.06
3.06
3.06
3.06
3.06
3.81
3.81
3.81
3.81
3.81
4.56
4.56
5.25
C
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.50
2.50
2.50
2.50
2.50
3.00
3.00
3.50
Queenstown, Australia 61-8-8240-2244
D
Basingstoke, UK 01256 812812
+/- 1/16”
1.69
1.69
2.19
2.50
2.44
2.44
2.69
2.25
2.69
2.69
2.94
2.94
3.06
3.31
5.88
E
AUSTRALIA
EUROPE
.203 x .38
.203 x .38
.203 x .38
.203 x .38
.203 x .38
.203 x .38
.203 x .38
.203 x .38
.203 x .38
.203 x .38
.203 x .38
.203 x .38
.203 x .38
.203 x .38
.203 x .38
Slot
G
Lbs.
3.25
Wt.
2.5
2.5
3.5
3.5
4.5
6.5
12
14
28
4
5
7
8
8
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1645A Summary of contents
Page 1
... Impedance (RMS) 1608A 10 8,000 C.T. 1609A 10 10,000 C.T. 1615A 15 5,000 C.T. 1650E 15 8,000 C.T. 1620A 20 6,600 C.T. 1650FA 25 7,600 C.T. 1645A 30 5,000 C.T. 1650G 35 6,600 C.T. 1650HA 40 6,600 C.T. 1650KA 50 3,400 C.T. 1650NA 60 4,300 C.T. 1650PA 60 6,600 C.T. 1650RA 100 5,000 C.T. ...
Page 2
... B+, bias, operating points, etc.) will change optimum plate to plate load impedance. Only a few of the most popular tubes are shown. As more tubes become available we will add them to the list. A tube manual or tube manufacturer's technical data sheets should be consulted first, before making a decision on a proper output transformer. Schematic All Parts Except 1645A, 1650E & 1650G Blu White (16 Ohm) (Plate) ...