Preliminary Information
MH88510/11
R7
LINE SEIZE
C2
VAR1
RELAY
TIP
R3
R1
C3
C4
D3
Q1
C5
D6
R4
R9
Q3
D8
+5V
MH88511
J
T1
Q2
T
1
D1
D4
D5
C6
VAR2
D9
+5V
D2
R5
R
3 C1
R6
R2
RING
DET
5
1
D7
COMPONENTS
D1,D2,=IN4732
D3,D4,D5,D6,D7=IN4003
D8=IN4148
D9=IN5246B
VAR1,VAR2,VAR3-V130LA20A
C1,C3=10µF,60V,5%
C2=1.0µF,100V,5%
C4=0.1µF,100V,5%
C5=0.01µF,100V,5%
C6=0.33µF,200V,5%
R1=1/4W,1%,6.8k
R2,R5=1/4W,10%,10k
TIL111
2
R3=1/2W,10%,50Ω
R4=1/4W,10%,680Ω
R6=1/4W,10%,100kΩ
R7=1/4W,10%,1kΩ
R8,R9=1/2W,10%,10Ω
Q1=MPSA90
Q2=ZN6716
Q3=BC238
T1=FILTRAN TPF712 (or EQUIVALENT) 600Ω:1
6
4
R8
RING
VAR3
Figure 7 - MH88511 as a Trunk Interface Application
MH88510
MT8816
MH88510
1dB
0dB
1dB
-2dB
-1dB
0dB
-1dB
Figure 8a - Line to Line
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