Hammond Mfg. Co. Ltd., Electronics Division
www.hammondmfg.com
1650KA
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).
Enclosed (shielded), 4 slot, above chassis Type "X" mounting.
Manufactured with plastic coil forms for coil support and insulation.
Frequency response 30Hz. to 30Khz (+/- 1db 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
3400 Ohms
4, 8 & 16 Ohms
50 Watts
DCR
Primary Blue-Red
Primary Red-Brown
Secondary Black-Green
Secondary Black-Yellow
Secondary Black-White
32.74 Ohms
36.71 Ohms
0.306 Ohm
0.432 Ohm
0.540 Ohm
Inductance | Impedance
Primary Blue-Brown
@ 60Hz, 10.0V OC
170.0H
78.0KOhm
Leakage Inductance
Primary Blue-Brown
@ 60Hz, 10.0V SC
9.42mH
Dielectric Strength
Temperature Range
2000Vrms
-40 To 105C
1650KA
Made In Canada
DATE
Hammond Mfg. Co. Ltd., Electronics Division
www.hammondmfg.com
DIMENSIONAL DETAILS:
BLK
GRN
YEL
WHT
BRN
BRN/YEL
RED
BLU/YEL
BLU
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 used 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
