JPS5748832A - Signal selection circuit - Google Patents

Signal selection circuit

Info

Publication number
JPS5748832A
JPS5748832A JP12445180A JP12445180A JPS5748832A JP S5748832 A JPS5748832 A JP S5748832A JP 12445180 A JP12445180 A JP 12445180A JP 12445180 A JP12445180 A JP 12445180A JP S5748832 A JPS5748832 A JP S5748832A
Authority
JP
Japan
Prior art keywords
signal
switching
trs
channel
selection circuit
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
JP12445180A
Other languages
Japanese (ja)
Inventor
Kazuhiro Mimura
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP12445180A priority Critical patent/JPS5748832A/en
Publication of JPS5748832A publication Critical patent/JPS5748832A/en
Pending 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
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors

Landscapes

  • Studio Circuits (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To prevent the leakage of a signal, by canceling the signal which is given to a switching means of a channel circuit not selected, in a circuit which can perform switching and selection of an output signal with a switching means. CONSTITUTION:When a switch 1a of a channel A selected is at an on-terminal side, a switching transistor (TR)3a only is conductive and a signal of a signal source 7a is outputted to a common resistor 5 for output. On the other hand, in channel circuits B, C not selected, control TRs 12b, 12c are conductive. Thus, the signal from the signal sources 7b, 7c is by-passed between the collector and the emitter of the TRs 12b, 12c, and the input signal to the emitter of the switching TRs 3b, 3c can almost be canceled. Thus, the leakage of signals can be avoided.
JP12445180A 1980-09-05 1980-09-05 Signal selection circuit Pending JPS5748832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12445180A JPS5748832A (en) 1980-09-05 1980-09-05 Signal selection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12445180A JPS5748832A (en) 1980-09-05 1980-09-05 Signal selection circuit

Publications (1)

Publication Number Publication Date
JPS5748832A true JPS5748832A (en) 1982-03-20

Family

ID=14885835

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12445180A Pending JPS5748832A (en) 1980-09-05 1980-09-05 Signal selection circuit

Country Status (1)

Country Link
JP (1) JPS5748832A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0297175A (en) * 1988-10-04 1990-04-09 Asahi Optical Co Ltd Still video device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0297175A (en) * 1988-10-04 1990-04-09 Asahi Optical Co Ltd Still video device

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