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PJ31002
Tone Ringer For Telephone Set
4-5
2002/01.rev.A
FIG. 4
Test Circuit (1)
• SWITCH POSITION IS THE FOLLOWING TABLE :
PARAMETER
SW1
SW2
Vsi , Isi
1
1
Vsus , Isus
1
1
Voh
2
2
Vol
2
3
FIG. 4 Te st C ircuit (2)
•
SWITCH POSITION IS THE FOLLOWING TABLE :
PARAMETER
SW1
SW2
FL
1
1
fH1
1
1
fH2
2
2
1
2
3
4
8
7
6
5
Rs
R1
C1
Tone Ringer IC
R2
C2
A
V
V
V
V
V
V
V
V
V
A
A
A
A
A
A
A
A
V
V
V
V
V
V
V
V
V
Isi Isus
Vsi
Vsus
Vcc
SW2
SW1
55V
10mA
Voh
Vol
To Oscilloscope
1
2
3
2
1
R1 = 165 K (+/-)
1%
R2 = 191 K (+/-)
1%
C1 = 0.47
µF (+/-)
5%
C2 = 0.0068
µF (+/-) 5%
1
2
3
4
8
7
6
5
Rs
R1
C1
To ne Rin ger IC
R2
C2
A
V
V
V
V
V
V
V
V
V
A
A
A
A
A
A
A
A
Isi.Isus
Vsi.
Vs us
Vcc
SW2
5.5V
2
1
2
1
SW 1
3
f1 .fH1. fH2
To Os cillos co pe
R1 = 165 K (+/-) 1%
R2 = 191 K (+/-) 1%
C1 = 0.47
µF (+/-) 5%
C2 = 0.0068
µF (+/-) 5%
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