IPC-TM-650 EN 2022 试验方法1.pdf - 第630页
Figure 1 T est Apparatus 10 MA. CURRENT SOURCE GROUND REFERENCE POINT MILLI- VOL T METER + + + ELECTRODE ( ) UNIT UNDER TEST (UUT) TEST ELECTRODE ( ) Figure 2 Block Diagram of T est Apparatus UUT 10 MA CURRENT REGULA T O…
NOTE:
NOTE:
Figure 3 IPC-B-50
IPC-TM-650
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Figure 1 Test Apparatus
10 MA.
CURRENT
SOURCE
GROUND
REFERENCE
POINT
MILLI-
VOL
T
METER
+
+
+
ELECTRODE
( )
UNIT UNDER
TEST (UUT)
TEST
ELECTRODE ( )
Figure 2 Block Diagram of Test Apparatus
UUT
10 MA
CURRENT
REGULATOR
MILLIVOLT
METER
IPC-TM-650
Number
Subject Date
Revision
Page 2 of 3
Table 1 Examples for Battery, Dropping
Resistor, and Accuracy
V R Accuracy
6 600 -0.8%
9 900 -0.6%
12 1200 -0.4%
24 2400 -0.2%
48 4800 -0.1%
Figure 3 Simple Constant Current Source
UUT
0 TO 5
OHMS
10 MA
CURRENT
R
V
MILLIVOLT
METER
IPC-TM-650
Number
Subject Date
Revision
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