CH615322B - BATTERY OPERATED ALARM CLOCK. - Google Patents

BATTERY OPERATED ALARM CLOCK.

Info

Publication number
CH615322B
CH615322B CH253775A CH253775A CH615322B CH 615322 B CH615322 B CH 615322B CH 253775 A CH253775 A CH 253775A CH 253775 A CH253775 A CH 253775A CH 615322 B CH615322 B CH 615322B
Authority
CH
Switzerland
Prior art keywords
clock
alarm clock
battery operated
operated alarm
emitting diode
Prior art date
Application number
CH253775A
Other languages
German (de)
Other versions
CH615322GA3 (en
Inventor
Hans Keller
Otmar Siegfried Dietrich
Rolf Dieter Burth
Original Assignee
Itt
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 of CH615322B publication Critical patent/CH615322B/en
Priority claimed from DE19742410117 external-priority patent/DE2410117B2/en
Priority claimed from DE2414119A external-priority patent/DE2414119A1/en
Priority claimed from DE19742428343 external-priority patent/DE2428343A1/en
Application filed by Itt filed Critical Itt
Publication of CH615322GA3 publication Critical patent/CH615322GA3/en

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G11/00—Producing optical signals at preselected times
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/30—Illumination of dials or hands
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Audible And Visible Signals (AREA)

Abstract

A description is given of an alarm clock which is battery-powered (normally being fed by a 1.5 V cell), in which for the purpose of illuminating parts of the clock, in particular the clock face, at least one semiconductor light-emitting diode (LD) is used. The inductive rebound/kick-back voltage of the coil (L) of the alarm signal transmitter of the clock is used to feed the light-emitting diode. <IMAGE>
CH253775A 1974-03-02 1975-02-28 Battery-powered alarm clock CH615322GA3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19742410117 DE2410117B2 (en) 1974-03-02 1974-03-02 BATTERY OPERATED ALARM CLOCK
DE2414119A DE2414119A1 (en) 1974-03-23 1974-03-23 Battery-operated alarm clock - with alarm source employing coil shunted by light-emitting diode
DE19742428343 DE2428343A1 (en) 1974-06-12 1974-06-12 Battery operated alarm clock - has alarm signal source employing magnetic coil

Publications (2)

Publication Number Publication Date
CH615322B true CH615322B (en)
CH615322GA3 CH615322GA3 (en) 1980-01-31

Family

ID=27185802

Family Applications (1)

Application Number Title Priority Date Filing Date
CH253775A CH615322GA3 (en) 1974-03-02 1975-02-28 Battery-powered alarm clock

Country Status (4)

Country Link
JP (1) JPS50136075A (en)
CH (1) CH615322GA3 (en)
FR (1) FR2262825B1 (en)
IT (1) IT1033226B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53134870U (en) * 1977-03-31 1978-10-25
JPS5421576U (en) * 1977-07-15 1979-02-13
JPS59194093U (en) * 1983-06-09 1984-12-24 株式会社精工舎 timer
JPS61176686U (en) * 1985-04-23 1986-11-04

Also Published As

Publication number Publication date
FR2262825A1 (en) 1975-09-26
IT1033226B (en) 1979-07-10
CH615322GA3 (en) 1980-01-31
JPS50136075A (en) 1975-10-28
FR2262825B1 (en) 1978-04-21

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