전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

Preview PDF HTML

LS1240 데이터시트(PDF) 2 Page - STMicroelectronics

부품명 LS1240
상세설명  Electronic two-tone ringer
PDF  7 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LS1240 데이터시트(HTML) 2 Page - STMicroelectronics

  LS1240 Datasheet HTML 1Page - STMicroelectronics LS1240 Datasheet HTML 2Page - STMicroelectronics LS1240 Datasheet HTML 3Page - STMicroelectronics LS1240 Datasheet HTML 4Page - STMicroelectronics LS1240 Datasheet HTML 5Page - STMicroelectronics LS1240 Datasheet HTML 6Page - STMicroelectronics LS1240 Datasheet HTML 7Page - STMicroelectronics  
Zoom Inzoom in Zoom Outzoom out
 2 / 7 page
background image
Obsolete
Product(s)
- Obsolete
Product(s)
Obsolete
Product(s)
- Obsolete
Product(s)
Block diagram and test circuit
LS1240
2/9
1
Block diagram and test circuit
Figure 1.
LS1240 block diagram
Figure 2.
Test circuit
Rectifier
bridge
Threshold circuit
with hysteresis
Output
stage
Tone frequency
generator
Switching
generator
frequency
8
7
6
5
4
3
2
1
Telephone
line
Rectifier
capacitor
N.C.
Buzzer
Output frequency
control resistor
Sweep rate
control capacitor
GND
Telephone
line
+
-
R1
=
2.72
⋅ 10
4
f1
(Hz)
⋅ (1 − 0.04 ln
f1
1943)
f2 = 0.725 f1
fSWEEP
=
750
C1
(nF)



Html Pages

1 2 3 4 5 6 7


데이터시트 다운로드

Go To PDF Page


링크 URL



ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크 투 데이터시트    |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com