IPC-TM-650 EN 2022 试验方法1.pdf - 第602页
Figure 1 Appar atus for C urrent Leakage Meas urement MILLI- VOL T METER ELECTRODE (–) GROUND REFERENCE POINT 1.00 KOHM RESISTOR LEAKAGE CURRENT UNIT U NDER TEST (UU T ) LOW FORW ARD-BIAS DIODES (HEADS-TO-T AILS) TEST EL…
IPC-TM-650
Number
Subject Date
Revision
Page 2 of 3
Figure 1 Apparatus for Current Leakage Measurement
MILLI-
VOLT
METER
ELECTRODE
(–)
GROUND
REFERENCE
POINT
1.00 KOHM
RESISTOR
LEAKAGE
CURRENT
UNIT UNDER
TEST (UUT)
LOW FORWARD-BIAS
DIODES (HEADS-TO-TAILS)
TEST
ELECTRODES
Figure 2 Current Leakage Test Circuit Configuration (Cover Removed)
AC RECEPTACLE
FOR VOLTMETER
AC RECEPTACLE
FOR UUT
BNC CONNECTOR
FOR VOLTMETER
TEST ELECTRODE
CARD EDGE
CONNECTOR
1K RESISTOR
METAL BOX
DIODES
TO AC
IPC-TM-650
Number
Subject Date
Revision
Page 3 of 3
Figure 2 AC Power Entry Mounting Suggestion
Junction
Box
Duplex
Receptacle
Ground
Fastener
Enclosure
Wall
Metal
Cover
Line
Filter
AC Line
Cord
Inside Outside
IPC-TM-650
Number
Subject Date
Revision
Page 2 of 3