GB1389208A - Delayed alarm and drowse for clock receivers - Google Patents

Delayed alarm and drowse for clock receivers

Info

Publication number
GB1389208A
GB1389208A GB3146471A GB3146471A GB1389208A GB 1389208 A GB1389208 A GB 1389208A GB 3146471 A GB3146471 A GB 3146471A GB 3146471 A GB3146471 A GB 3146471A GB 1389208 A GB1389208 A GB 1389208A
Authority
GB
United Kingdom
Prior art keywords
alarm
switch
drowse
subdued
radio
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
GB3146471A
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Priority to GB3146471A priority Critical patent/GB1389208A/en
Priority to US00268787A priority patent/US3825836A/en
Priority to JP6745372A priority patent/JPS5317246B1/ja
Publication of GB1389208A publication Critical patent/GB1389208A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching
    • 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
    • G04C21/28—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to put into action electro-acoustic means, e.g. awakening by music
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C23/00—Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Emergency Alarm Devices (AREA)
  • Electromechanical Clocks (AREA)
  • Electronic Switches (AREA)
  • Circuits Of Receivers In General (AREA)
  • Electric Clocks (AREA)

Abstract

1389208 Electric alarm timepiece R C A CORPORATION 30 June 1972 [5 July 1971] 31464/71 Heading G3T An alarm timepiece incorporates subdued (drowse) and full alarm facilities and an alarm cycle renew switch 2 to reactivate the subdued alarm condition. The subdued alarm may be produced by a radio 8 for the whole of a delay or drowse period initiated by a time switch 5 at a pre-set time. The delay period duration is dependent upon the charging time of a capacitor 23 in a delay circuit 1 including a Schmitt trigger. At the end of the delay period a transistor 22 conducts and the base of transistor 21 offers a high resistance to mains A.C. fed via C30 R31 and current flow through 21 responds, forward biasing a diode 27 to pass clipped A.C. to the A.F. stages of the radio. Thereby the full alarm is produced and will continue until C23 is discharged. During the drowse delay period Tr 21 is saturated and diode 27 blocked so the full alarm is prevented. Manual operation of switch 2 causes renewal of the delay period and subdued alarm instead of the full alarm, when desired. A three position switch enables the switching ON of the radio when desired. A "sleep" switch 9 can be set to automatically switch OFF the radio after say half an hour's play.
GB3146471A 1971-07-05 1971-07-05 Delayed alarm and drowse for clock receivers Expired GB1389208A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3146471A GB1389208A (en) 1971-07-05 1971-07-05 Delayed alarm and drowse for clock receivers
US00268787A US3825836A (en) 1971-07-05 1972-07-03 Delayed alarm and drowse for clock receivers
JP6745372A JPS5317246B1 (en) 1971-07-05 1972-07-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3146471A GB1389208A (en) 1971-07-05 1971-07-05 Delayed alarm and drowse for clock receivers

Publications (1)

Publication Number Publication Date
GB1389208A true GB1389208A (en) 1975-04-03

Family

ID=10323480

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3146471A Expired GB1389208A (en) 1971-07-05 1971-07-05 Delayed alarm and drowse for clock receivers

Country Status (3)

Country Link
US (1) US3825836A (en)
JP (1) JPS5317246B1 (en)
GB (1) GB1389208A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244042A (en) * 1977-07-29 1981-01-06 Kabushiki Kaisha Seikosha Alarm timepiece

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900798A (en) * 1971-04-19 1975-08-19 Pomerantz Alfred Radio solid state crescendo volume alarm
GB1477522A (en) * 1973-10-12 1977-06-22 Sony Corp Radio receivers
US3931621A (en) * 1973-12-10 1976-01-06 Rca Corporation Variable amplitude timed alarm system
US4166358A (en) * 1977-03-25 1979-09-04 General Time Corporation Solid state alarm for clock-radio
US4228645A (en) * 1977-05-10 1980-10-21 Citizen Watch Company Limited Electronic timepiece equipped with alarm system
US4328485A (en) * 1980-02-25 1982-05-04 Potter Bronson M Binary alarm
US5886955A (en) * 1994-10-21 1999-03-23 Magnasco; Peter L. Personal electronic clock related device with a limited automatic multiple recall alarm suspension control means

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999928A (en) * 1959-09-02 1961-09-12 Cons Electronics Ind Portable clock-radio alarm system
US3559072A (en) * 1968-03-18 1971-01-26 Arvin Ind Inc Electronic shut-off timers
US3571626A (en) * 1968-12-30 1971-03-23 Sylvania Electric Prod Integrator-schmitt trigger circuit
US3611151A (en) * 1970-02-24 1971-10-05 Jose L Fernandez Clock radio with tape player
US3688293A (en) * 1970-05-08 1972-08-29 Standard Farrington Alarm & Si Automatic time-controlled alarm system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244042A (en) * 1977-07-29 1981-01-06 Kabushiki Kaisha Seikosha Alarm timepiece

Also Published As

Publication number Publication date
JPS4817649A (en) 1973-03-06
US3825836A (en) 1974-07-23
JPS5317246B1 (en) 1978-06-07

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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