Clear-Com ICS-22 User Manual
Page 33
Vitec Group Communications
ICS-22 Speaker Panel Instruction Manual
4 - 1 3
Figure 4-5: VOX Schematic (part no. 710472)
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
D1
5.1V
1N5231B
C5
680pF
C12
4.7uF 16V
+
R13
4.7K
D7
1N4148
C6
.01uF
D6
1N4148
D8
1N4148
R1
4.7K
D5
1N4148
D4
1N4148
C1
1
220uF
+
C10
470pF
R9D
100K X 4I
R9C
100K X 4I
C13
1uF NP
R9B
100K X 4I
R9A
100K X 4I
R15
100K*
C8
4.7uF 16V
+
IC2B
LF353
+
-
IC2A
LF353
+
-
Q1
2N2222A
Q2
2N2222A
R16
4.7K
R1
1
100K*
D9
10V
1N4740A
D2
5.1V
1N5231B
R5
50K POT
R4
1M
R2
6.8K
R3E
10K X 5I
R8
1M
R3C
10K X 5I
C2
.1uF
R3A
10K X 5I
IC1B
LF353
+
-
R10A
10K X 5I
R3B
10K X 5I
C9
.01uF
R3D
10K X 5I
R10D
10K X 5I
R10B
10K X 5I
R6
1.5K
R10C
10K X 5I
R17
4.7K
C3
.1uF
C4
.022uF MONO
R10E
10K X 5I
P1
C14
22uF T
ANT
+
R12
4.7K
IC1A
LF353
+
-
C1
.1uF
R14
20K
P2
S1
D3
1N4148
Bias-2
Bias
+V1
Bias
Bias
+V1
VDD
VDD
Bias-2
VDD
Bias-2
+V1
Bias-2
+V4
+V1
+V4
+V1
7
8
5
6
3
4
1
2
5
6
7
3
2
1
8
4
3
1
2
9
10
5
6
1
2
5
6
7
1
2
3
4
7
8
7
8
3
4
5
6
9
10
1
2
3
3
2
1
8
4
+
1
+
3
+
5
+
7
+
9
+
11
+
13
+
2
+
4
+
6
+
8
+
10
+
12
+
14
2
1
3
5
4
6
NOTES: (UNLESS OTHER
WISE SPECIFIED)
1.
ALL
RESIST
ORS
ARE 1/10W 5% LISTED IN OHMS
2.
ALL
CAP
ACIT
ORS
ARE LISTED IN MICROF
ARADS
3.
ALL
DIODES
ARE 1N4148
P
ANEL
MIC
P
ANEL
MIC
HEADSET
ANTI
VOX
VOX
CW