JPS55117350A - Electronic switch - Google Patents

Electronic switch

Info

Publication number
JPS55117350A
JPS55117350A JP2335379A JP2335379A JPS55117350A JP S55117350 A JPS55117350 A JP S55117350A JP 2335379 A JP2335379 A JP 2335379A JP 2335379 A JP2335379 A JP 2335379A JP S55117350 A JPS55117350 A JP S55117350A
Authority
JP
Japan
Prior art keywords
amplifier
amplifiers
gain
signal
transmission signal
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.)
Pending
Application number
JP2335379A
Other languages
Japanese (ja)
Inventor
Koichi Shimoi
Toshio Ikeda
Takashi Wakabayashi
Kenichi Aihara
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.)
Fujitsu Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
Nippon Telegraph and Telephone 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 Fujitsu Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujitsu Ltd
Priority to JP2335379A priority Critical patent/JPS55117350A/en
Publication of JPS55117350A publication Critical patent/JPS55117350A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
    • H04L5/24—Arrangements affording multiple use of the transmission path using time-division multiplexing with start-stop synchronous converters
    • H04L5/245—Arrangements affording multiple use of the transmission path using time-division multiplexing with start-stop synchronous converters with a number of discharge tubes or semiconductor elements which successively connect the different channels to the transmission channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electronic Switches (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To increase the operation speed by supplying the gain control signal from outside to the transistor amplifier to give change to the gain and then selecting the desired transmission signal for transmission to the current addition type amplifier, thus realizing the miniaturization of the structure and the reduction of the crosstalk amount. CONSTITUTION:N units of transistor Tr amplifiers 3 function as the electronic switches of high output impedance connected to N units of input terminals 2. Thus the outputs of amplifiers 3 are connected in parallel to be supplied to current addition amplifier 5. Here control input terminal 4 is provided to amplifier 3, and the gain control signal is supplied to terminal 4 from outside. As a result, the gain of amplifier 3 is varied to turn on or off amplifier 3, and thus the desired transmission signal is selected to be sent to amplifier 5. In this way, the bipolar transmission signal can be selected directly without being converted into the unipolar signal by means of amplifiers 3 and 5, thus increasing the operation speed and realizing reduction of both the size of structure and the amount of crosstalk.
JP2335379A 1979-03-02 1979-03-02 Electronic switch Pending JPS55117350A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2335379A JPS55117350A (en) 1979-03-02 1979-03-02 Electronic switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2335379A JPS55117350A (en) 1979-03-02 1979-03-02 Electronic switch

Publications (1)

Publication Number Publication Date
JPS55117350A true JPS55117350A (en) 1980-09-09

Family

ID=12108205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2335379A Pending JPS55117350A (en) 1979-03-02 1979-03-02 Electronic switch

Country Status (1)

Country Link
JP (1) JPS55117350A (en)

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