Hammond Mfg. Co. Ltd., Electronics Division
www.hammondmfg.com
140QEX
CHASSIS MOUNT – SHIELDED
IMPEDANCE MATCHING TRANSFORMER
This transformer operates in the 20 Hz to 20 KHz range.
The metal can provides excellent shielding from a broad
range of external sources. While the nickel core provides
high permeability combined with low losses.
Typical applications Input/output Isolation, Line Matching,
Driver, Hybrid applications.
ELECTRICAL SPECIFICATIONS
Characteristic
Input Impedance
Output Impedance
Output Power
DCR
Primary
RED – BRN
BRN – YEL
Secondary
GRN – BLK
BLK – BLU
Inductance
Primary
Secondary
Impedance
Primary
Secondary
Frequency Response
Turns ratio
Insertion Loss
Return Loss
Longitudinal balance
Dielectric Strength
Typical
600
ΩCT
600
ΩCT
10.0 dbm
72.4
Ω
36.2
Ω
36.2
Ω
72.4
Ω
36.2
Ω
36.2
Ω
@ 1.0 kHz, 1.0 V OC
10.62 H
10.62 H
@ 1.0 kHz, 1.0 V OC
64.5kΩ
64.5kΩ
±1db
from 20 Hz to 20KHz
1:1
< 1.1 db
20 db
-65 db
500 Vrms
YELLOW
BLUE
140QEX
5mW 20Hz - 20kHz
RED - BRN - YEL: 600
Ω
CT
GRN - BLK - BLU: 600
Ω
CT
MADE IN CANADA
DATE
SCHEMATIC DIAGRAM
PRIMARY
SECONDARY
RED
GREEN
600
Ω
CT
BROWN
600
Ω
CT
BLACK
TYPICAL TEST CIRCUIT
R
S
/
2
PRIMARY
SECONDARY
R
L
OUT
R
S
/
2
Measurement instruments
Hp4192a impedance analyzer
Hp3456a DVM
Keithley 2002 DVM
D scope series iii audio analyzer
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.
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