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參數(shù)資料
| 型號(hào)： | ES51918 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 11,000 Counts Auto DMM |
| 中文描述： | 11,000計(jì)數(shù)汽車萬用表 |
| 文件頁數(shù)： | 8/32頁 |
| 文件大?。?/td> | 510K |
| 代理商： | ES51918 |
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v1.02 05/06/30
8
ES51918
11,000 Counts Auto DMM
1.1.4 The true RMS-to-DC conversion with ES636
If ES636 is used for true RMS-to-DC measurement, the test circuit is shown in Figure 1.
Make ADO and ADI pin short, and TEST5 pin keeps float. Connect OVSG pin to
AGND through a switch in ACV measurement mode. If the DCV and ACV
measurement modes are in the same rotary switch, please also add this switch in the
rotary switch. The configuration of this switch will not influence the precision of DCV
measurement.
Figure 1. The true RMS-to-DC conversion with ES636
OVSG
OR1
VR5
VR4
VR3
VR2
TEST5
ACVL
ACVH
ADI
ADO
ADOHZ
PWD
OP-
OP+
OPO
1.111M
101K
10K
1K
99.5
AGND
ACV
AGND
30K
1
2
3
4
5
6
7
14
13
12
11
10
9
8
E
2.2u
+
+Vs
AGND
+Vs
-Vs
500K
1K
100
AGND
-Vs
100K
1.5K
-Vs
N1
N2
10K
30K
0.1u
AGND
+Vs -Vs
2
3
1
5
4
7
6
AGND
1u+
200
AGND
+Vs
TL061
E
10K
+Vs
-Vs
4.7u
Note: The filter capacitors for +Vs and -Vs
are recommended to near to the power
terminals of ES636 and external OPAMP.
1
1
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