Hammond Mfg. Co. Ltd., Electronics Division
www.hammondmfg.com
1650G
HI-FI AUDIO OUTPUT MULTIPLE SECONDARY TRANSFORMER
NEW & improved version of our 1608-1650 Series multiple secondary output transformers
(Re-designed secondaries for easy hook-up of secondary loads).
Designed for push-pull tube output circuits.
Units are designed to provide ample "headroom" at bass frequencies
(Note the weight of each transformer).
Wide range of outputs at 3.5, 8, 16, 250 & 500 ohms.
Enclosed (shielded), 4 slot, above chassis Type "X" mounting.
Manufactured with plastic coil forms for coil support and insulation.
Frequency response 30Hz. to 30Khz (+/- 2db max. - ref. 1Khz) minimum.
Insulated flexible leads 8" min.
Typical applications - Push-Pull: triode, Ultra-Linear pentode, pentode and tetrode connected audio output.
ELECTRICAL SPECIFICATIONS
Characteristic
Input Impedance
Output Impedance
Output Power
Typical
6600 Ohms
3.5, 8, 16, 250 & 500 Ohms
35 Watts
DCR
Primary Blue-Red
Primary Red-Brown
Secondary Black-Orange
Secondary Black-Green
Secondary Black-Yellow
Secondary Black-Blk/Yellow
Secondary Black-Red/Yel
56.93 Ohms
60.95 Ohms
0.259 Ohm
0.364 Ohm
0.498 Ohm
6.727 Ohms
9.550 Ohms
Inductance | Impedance
Primary Blue-Brown
@ 60Hz, 10.0V OC
40.8H
15.85KOhm
Leakage Inductance
Primary Blue-Brown
@ 60Hz, 10.0V SC
29.70mH
Dielectric Strength
Temperature Range
2000Vrms
-40 To 105C
1650G
Made In Canada
DATE
Hammond Mfg. Co. Ltd., Electronics Division
www.hammondmfg.com
DIMENSIONAL DETAILS:
BLK
ORG
GRN
YEL
BLK/YEL
RED/YEL
BLU
RED
BRN
TEST CONDITIONS
Measurement Instruments:
dScope Series III Audio Analyzer
Wayne Kerr 3255B with a 3265B Inductance Analyzer
HP 4192a LF Impedance Analyzer
Keithley 2010 DVM
* All graphs input level 27dBu @1.0KHz reference.
**The results are typical and are subject to normal manufacturing and
electrical tolerances.
TYPICAL TEST CIRCUIT
PRIMARY
R S/
SECONDARY
2
RL
R S/
OUT
2
This drawing and the information in it is the property of Hammond Manufacturing. It may not be reproduced, transmitted or use d in any manner whatsoever without the written permission of
Hammond Manufacturing. Data subject to change without notice.
Hammond Mfg. Co. Ltd., Electronics Division
www.hammondmfg.com
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