GB1539712A - Monolithic integrated circuit for battery-operated alarm clocks - Google Patents

Monolithic integrated circuit for battery-operated alarm clocks

Info

Publication number
GB1539712A
GB1539712A GB7368/77A GB736877A GB1539712A GB 1539712 A GB1539712 A GB 1539712A GB 7368/77 A GB7368/77 A GB 7368/77A GB 736877 A GB736877 A GB 736877A GB 1539712 A GB1539712 A GB 1539712A
Authority
GB
United Kingdom
Prior art keywords
integrated circuit
battery
monolithic integrated
alarm clocks
operated alarm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7368/77A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of GB1539712A publication Critical patent/GB1539712A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/36—Signal repeating devices
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals
    • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
    • G04G13/021—Details
    • G04G13/023—Adjusting the duration or amplitude of signals

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

In this known battery-powered alarm clock with a monolithically integrated circuit, the control signal for the setting circuit (8) which brings the frequency divider stages of the audio-frequency oscillator (6) into a defined state is derived from the audio-frequency oscillator itself. <IMAGE>
GB7368/77A 1976-02-27 1977-02-22 Monolithic integrated circuit for battery-operated alarm clocks Expired GB1539712A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762608025 DE2608025C2 (en) 1976-02-27 1976-02-27 Monolithic integrated circuit for battery-operated alarm clocks

Publications (1)

Publication Number Publication Date
GB1539712A true GB1539712A (en) 1979-01-31

Family

ID=5971044

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7368/77A Expired GB1539712A (en) 1976-02-27 1977-02-22 Monolithic integrated circuit for battery-operated alarm clocks

Country Status (6)

Country Link
JP (1) JPS52104969A (en)
CH (1) CH614344GA3 (en)
DE (1) DE2608025C2 (en)
FR (1) FR2342519A1 (en)
GB (1) GB1539712A (en)
IT (1) IT1076118B (en)

Also Published As

Publication number Publication date
FR2342519A1 (en) 1977-09-23
JPS52104969A (en) 1977-09-02
CH614344GA3 (en) 1979-11-30
FR2342519B3 (en) 1980-01-04
DE2608025C2 (en) 1978-01-26
CH614344B (en)
IT1076118B (en) 1985-04-24
DE2608025B1 (en) 1977-06-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee