LS1240A View Datasheet(PDF) - Wing Shing International Group

Part Name

Description

MFG CO.

LS1240A

Electronic Two-Tone Ringer

Wing Shing International Group 

BLOCK DIAGRAM

LS1240A

Figure 1 : Test Circuit.

R1

=

2.72 ⋅ 104

f1 (Hz)

⋅

(1

−

0.04

ln

f1

1943

)

f2 = 0.725 f1

fSWEEP

=

750

C1 (nF)

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