GB334516A - An improved device for the periodic opening or closing of an electric circuit - Google Patents

An improved device for the periodic opening or closing of an electric circuit

Info

Publication number
GB334516A
GB334516A GB20312/30A GB2031230A GB334516A GB 334516 A GB334516 A GB 334516A GB 20312/30 A GB20312/30 A GB 20312/30A GB 2031230 A GB2031230 A GB 2031230A GB 334516 A GB334516 A GB 334516A
Authority
GB
United Kingdom
Prior art keywords
relay
circuit
closing
opening
energizes
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
GB20312/30A
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co Ltd
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 Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Publication of GB334516A publication Critical patent/GB334516A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/24—Apparatus or circuits at the receiving end
    • H04L15/26—Apparatus or circuits at the receiving end operating only on reception of predetermined code signals, e.g. distress signals, party-line call signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Emergency Alarm Devices (AREA)
  • Alarm Systems (AREA)
  • Relay Circuits (AREA)

Abstract

334,516. Siemens Bros. & Co., Ltd., and Humphries, H. E. April 29, 1929. Divided on 334,205. Selectors responsive only to a particular code signal.-A device for opening and closing a circuit at a definite periodicity, say half a second, consists of a self-interrupting relay Z, Fig. 3, in parallel with a condenser QA and both in series with a choke or resistance W. The interruption of Z is preferably effected by a relay Y which is controlled by Z and itself controls the external circuit. The periodicity may be varied by a resistance, which may as shown at YA be in the discharge circuit of the relay or may be in the feed circuit W, or the condenser may be variable. The device is put in or out of action by a relay X (not shown). When this relay is de-energized Z is disconnected from QA, so as to release quickly, and QA is connected to a quickdischarge circuit YC. The elements QB, QC, YB are provided for spark quenching. A pair of relays A, B, Fig. 4, may be controlled by Y to cycle at twice. the period of Y. The first closure of y energizes A (i); when y opens, B (i) becomes locked in series with A (i); the second closure of y energizes a differential winding A (ii) to release A, B being held over (ii); the second opening of y releases B in readiness for a fresh cycle. Similarly A, B may control a second pair of relays which cycles at four times the period of Y. The device may be used for measuring the marks and spaces of a wireless alarm signal, as described in Specification 334,205.
GB20312/30A 1930-12-04 1929-04-29 An improved device for the periodic opening or closing of an electric circuit Expired GB334516A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36606/30A GB366644A (en) 1930-12-04 1930-12-04 Improvements relating to electric selectors

Publications (1)

Publication Number Publication Date
GB334516A true GB334516A (en) 1930-08-29

Family

ID=10389654

Family Applications (4)

Application Number Title Priority Date Filing Date
GB20312/30A Expired GB334516A (en) 1930-12-04 1929-04-29 An improved device for the periodic opening or closing of an electric circuit
GB13229/29A Expired GB334205A (en) 1930-12-04 1929-04-29 Improvements relating to electric selectors
GB36606/30A Expired GB366644A (en) 1930-12-04 1930-12-04 Improvements relating to electric selectors
GB4995/31A Expired GB372435A (en) 1930-12-04 1931-02-17 An improved device for the periodic opening or closing of an electric circuit

Family Applications After (3)

Application Number Title Priority Date Filing Date
GB13229/29A Expired GB334205A (en) 1930-12-04 1929-04-29 Improvements relating to electric selectors
GB36606/30A Expired GB366644A (en) 1930-12-04 1930-12-04 Improvements relating to electric selectors
GB4995/31A Expired GB372435A (en) 1930-12-04 1931-02-17 An improved device for the periodic opening or closing of an electric circuit

Country Status (2)

Country Link
FR (1) FR694634A (en)
GB (4) GB334516A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436787A (en) * 1942-06-05 1948-03-02 Standard Telephones Cables Ltd Arrangement for producing electric impulses

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972799C (en) * 1937-11-24 1959-09-24 Siemens Ag Relay arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436787A (en) * 1942-06-05 1948-03-02 Standard Telephones Cables Ltd Arrangement for producing electric impulses

Also Published As

Publication number Publication date
GB372435A (en) 1932-05-12
GB334205A (en) 1930-08-29
FR694634A (en) 1930-12-05
GB366644A (en) 1932-02-11

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