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GB1111467A - Improvements in or relating to contact-less switching circuits - Google Patents

Improvements in or relating to contact-less switching circuits

Info

Publication number
GB1111467A
GB1111467A GB1887766A GB1887766A GB1111467A GB 1111467 A GB1111467 A GB 1111467A GB 1887766 A GB1887766 A GB 1887766A GB 1887766 A GB1887766 A GB 1887766A GB 1111467 A GB1111467 A GB 1111467A
Authority
GB
United Kingdom
Prior art keywords
receiver
transmitter
resonant
terminals
switch
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
GB1887766A
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.)
Autophon AG
Original Assignee
Autophon AG
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 Autophon AG filed Critical Autophon AG
Publication of GB1111467A publication Critical patent/GB1111467A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/74—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of diodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Electronic Switches (AREA)
  • Paper (AREA)

Abstract

1,111,467. Switching circuits; radio signalling. AUTOPHON A.G. 29 April, 1966 [30 April, 1965], No. 18877/66. Headings H3U and H4L. A contact-less circuit for alternatively connecting an aerial A1, A2 to transmitter terminals SA1, SA2 or receiver terminals EE1, EE2, consequent upon the operation of a switch K connecting a D.C. source to the transmitter supply circuits S or to the receiver supply circuits E comprises for the transmitter, a T-seotion C1, C2, L1, the latter element being shunted by a diode D1. The capacitor C3 has a high capacity so that effectively it only serves as a block for D.C. The values of the elements C1, C2, L1 are chosen so that the shunting effect of the relatively low impedances presented across the terminals SA1, SA2 and A1, A2 produces a parallel resonant circuit resonant at the transmitter frequency. Similarly, for the receiver in which the impedance across the terminals EE1, EE2 is low, a T-section C4, C5, L2 is provided resonant at the receiver frequency, and a diode D2 shunts the element L2. When the switch K is in the position shown to supply the receiver, the D.C. flows through E, L1 and D1 to the -ve terminal. Thus D1 is rendered conductive and shortcircuits L1, and C2 presents a high impedance shunt across A1, A2. However, D2 remains blocked and energy can flow from A1, A2 via the resonant T-section to the receiver EE1, EE2. Similarly, when switch K is moved to the transmitter position, D2 becomes conductive, C4 acts as a high impedance shunt, and energy can flow from A1, A2 via the resonant T- section to SA1, SA2.
GB1887766A 1965-04-30 1966-04-29 Improvements in or relating to contact-less switching circuits Expired GB1111467A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH602065A CH422916A (en) 1965-04-30 1965-04-30 Circuit arrangement for the contactless optional connection between a common connection and one of at least two inputs or outputs

Publications (1)

Publication Number Publication Date
GB1111467A true GB1111467A (en) 1968-04-24

Family

ID=4302910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1887766A Expired GB1111467A (en) 1965-04-30 1966-04-29 Improvements in or relating to contact-less switching circuits

Country Status (4)

Country Link
BE (1) BE679932A (en)
CH (1) CH422916A (en)
DE (2) DE1516727B1 (en)
GB (1) GB1111467A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0151014A2 (en) * 1984-01-27 1985-08-07 Nec Corporation Radio transceiver including an antenna switching circuit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1281984B (en) * 1964-09-18 1968-11-07 Siemag Siegener Masch Bau Towing device for rolling stock, preferably profile carriers, with a tractor carriage guided in rails
US4055807A (en) * 1976-03-25 1977-10-25 Motorola, Inc. Antenna switch
DE3818540A1 (en) * 1988-05-31 1989-12-07 Rieter Werke Haendle ROLLING MILL WITH ADJUSTABLE ROLLER NECK FOR CERAMIC MEASURES

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE902396C (en) * 1943-03-16 1954-01-21 Lorenz C Ag Switching device for ultra-short waves
AT236447B (en) * 1962-02-16 1964-10-26 Siemens Ag Albis Transmit / receive switch for balanced and unbalanced lines
FR1372506A (en) * 1963-07-04 1964-09-18 Csf New electronic switching device for alternating currents

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0151014A2 (en) * 1984-01-27 1985-08-07 Nec Corporation Radio transceiver including an antenna switching circuit
EP0151014A3 (en) * 1984-01-27 1985-08-21 Nec Corporation Radio transceiver including an antenna switching circuit

Also Published As

Publication number Publication date
CH422916A (en) 1966-10-31
BE679932A (en) 1966-10-03
DE1516727B1 (en) 1969-09-11
DE28476C (en)

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