GB570094A - A thermionic-valve switching circuit - Google Patents

A thermionic-valve switching circuit

Info

Publication number
GB570094A
GB570094A GB18708/43A GB1870843A GB570094A GB 570094 A GB570094 A GB 570094A GB 18708/43 A GB18708/43 A GB 18708/43A GB 1870843 A GB1870843 A GB 1870843A GB 570094 A GB570094 A GB 570094A
Authority
GB
United Kingdom
Prior art keywords
valve
signals
arrangement
positive
gas
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
GB18708/43A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to ES0167999A priority Critical patent/ES167999A1/en
Publication of GB570094A publication Critical patent/GB570094A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/24—Relay circuits using discharge tubes or semiconductor devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

570,094. Thermionic relay circuits; code telegraphy. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and STYLES, L. C. Nov. 10, 1943, No. 18708. [Classes 40 (iii) and 40 (v)] A thermionic switching arrangement comprises in series between the positive and negative terminals of a source, a hard vacuum valve and a gas filled valve, each grid controlled, together with means to apply potentials to both valves to render the gas-filled valve conductive and means including the hard vacuum, valve for rendering the gas-filled valve non- conductive. The Figure shows an arrangement in which the anode of the hard valve 1 is connected to the positive terminal and the cathode of the gas-filled valve 2 is connected to the negative terminal each connection including an impedance 3, 4. In this arrangement control is effected by applying negative spacing signals to the grid of the hard valve and positive marking signals to the grid of the grid controlled valve 2. As shown, the arrangement is applied to a telegraph relay system responsive to mark and space signals received over two different input terminals and is adapted to convert these signals to on-off signals in a single output channel. As shown, direct-current amplifiers 10, 11 precede the switching valves 1, 2. In this arrangement both mark and space signals are positive pulses, and phase reversing valve 12 is included in the marking channel. The output may be taken from the cathode resistance 4 in the form of positive pulses or from the resistance 3 in the form of negative pulses.
GB18708/43A 1943-11-10 1943-11-10 A thermionic-valve switching circuit Expired GB570094A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES0167999A ES167999A1 (en) 1943-11-10 1944-11-09 A THERMAL VALVE SWITCH

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB252633X 1943-11-10
GB150944X 1944-09-15

Publications (1)

Publication Number Publication Date
GB570094A true GB570094A (en) 1945-06-21

Family

ID=26251041

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18708/43A Expired GB570094A (en) 1943-11-10 1943-11-10 A thermionic-valve switching circuit

Country Status (3)

Country Link
CH (1) CH252633A (en)
FR (1) FR939610A (en)
GB (1) GB570094A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798997A (en) * 1953-08-10 1957-07-09 North American Aviation Inc Frequency regulated power supply
US3008067A (en) * 1959-07-02 1961-11-07 Burroughs Corp Counter circuit and count indicator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798997A (en) * 1953-08-10 1957-07-09 North American Aviation Inc Frequency regulated power supply
US3008067A (en) * 1959-07-02 1961-11-07 Burroughs Corp Counter circuit and count indicator

Also Published As

Publication number Publication date
FR939610A (en) 1948-11-19
CH252633A (en) 1948-01-15

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