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PBL3853N 데이터 시트보기 (PDF) - Ericsson
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PBL3853N
Universal Speech Circuit
Ericsson
PBL3853N Datasheet PDF : 16 Pages
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PBL 3853
R
L
-0-4k
Ω
0 ohm when artificial
line is used
5H+5H
R
feed
= 400
Ω
+400
Ω
+
C
ARTIFICIAL
LINE
+
E= 50V
V
2
600
Ω
V
L
V
1
C = 1
µ
F when artificial line is used
470
µ
F when not used
I
L
+ LINE
MIC
Recelver
cut-off
Z
Mic
=150
Ω
V
3
Transmitter
mute
Recevler
I
DC
tone
input
Z= 500
Ω
REC
V
DC
PBL 3853
see fig 4
-
LINE
V
5
V
4
Z
Rec
=350
Ω
R
L
-0-4k
Ω
0 ohm when artificial
line is used
5H+5H
R
feed
= 400
Ω
+400
Ω
1
µ
F
Uz = 15-16V
+
E= 50V
V
2
600
Ω
V
1
I
L
+ LINE
Recelver
cut-off
MIC
Transmitter
mute
I
DC
Recevler
tone
input
V
L
REC
V
DC
PBL 3853
see fig 4
V
4
-
LINE
Z
Mic
=150
Ω
V
3
Z= 500
Ω
V
5
Z
Rec
350
Ω
Figure 2. Test set up without rectifier
bridge.
Figure 3. Test set up with rectifier bridge.
I
L + Line
R 13
R12
R1
1
9
PBL3853
C1
5
-
AC-DC char. adjust
+
7
T2
R1 = 2.7 k
R2 = 22
Ω
R3 = 6.8 k
R4 = 1.8 k
C1 = 150 nF
C2 = 10 nF
C3 = 47
µ
F
C4 = 220 nF
R2
Transmitter mute
10
+
8
T1
+
-
R5 = 75
Ω
R6 = 910
Ω
C5 = 150 nF
C6 = 47 nF
4
+V
-
18
R7 = 6.2k
R8 = 560
Ω
C7 = 100 nF
C8 = 68 nF
12
Mic
M
T
X
13
R
x
16
C9
+
Rec
R9 = 11 k
R10 = 4.7k
V
DC
R11 = 120k
R12 = 56
Ω
C9 = 4.7
µ
F
C10 = 22
µ
F
D1 = Z 4.5 V
6
14
11 3 2
17
15 Receiver
C4
Tone in
R3
C5
Cut-off
C7
D2 D3
R
A
R
C
R
DTMF
+
R6
R7
R8
R11
C8
R13 = 68
Ω
D1
+
C10
R
C
R
D
= 30 k*
= 11k*
D2 = 1N4148
D3 = 1N4148
T1 = BC178B
T2 = BC178B
DTMF
R5
R10
R
B
C3
R
D
In
R4
R9
C6
C2
* values for the test set up only
-Line
Figure 4. Reference figure with line length regulation. DIP-package.
2
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