JPS5530258A - Signal switching circuit - Google Patents

Signal switching circuit

Info

Publication number
JPS5530258A
JPS5530258A JP10366678A JP10366678A JPS5530258A JP S5530258 A JPS5530258 A JP S5530258A JP 10366678 A JP10366678 A JP 10366678A JP 10366678 A JP10366678 A JP 10366678A JP S5530258 A JPS5530258 A JP S5530258A
Authority
JP
Japan
Prior art keywords
resistance
signal
transistor
systems
amplifier
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
JP10366678A
Other languages
Japanese (ja)
Inventor
Yasuo Mihashi
Yoshihisa Nishitani
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 JP10366678A priority Critical patent/JPS5530258A/en
Publication of JPS5530258A publication Critical patent/JPS5530258A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electronic Switches (AREA)
  • Picture Signal Circuits (AREA)
  • Filters And Equalizers (AREA)

Abstract

PURPOSE: To eliminate mutual interference between frequency characteristics and phase characteristics of respective band amplification systems by changing several signal systems over freely on a signal line relating to the signal systems and by making a selected signal system completely independent of other signal systems.
CONSTITUTION: Once a switching signal for a positive voltage is applied to input terminal 15a, currents flow through routes of +B1, resistance 10a, diode 11a, resistance 13a and transistor 6a, +B1, resistance 10, diode 12a, resistance 13a and transistor 6a, and +B0, resistance 14a and transistor 6a respectively, so that switching transistor 6a will be saturated. To make both diodes 11a and 12a conductive in terms of direct current, the amplifier system is provided which has a fixed band when an input signal applied to input terminal 1 is applied to amplifier 7 by way of emitter-follower amplifier 2, matching resistance 9a, filter 3a, and diodes 11a and 12a. At this time, no foward bias current flows through other switching transistors 6b and 6c which are both OFF.
COPYRIGHT: (C)1980,JPO&Japio
JP10366678A 1978-08-24 1978-08-24 Signal switching circuit Pending JPS5530258A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10366678A JPS5530258A (en) 1978-08-24 1978-08-24 Signal switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10366678A JPS5530258A (en) 1978-08-24 1978-08-24 Signal switching circuit

Publications (1)

Publication Number Publication Date
JPS5530258A true JPS5530258A (en) 1980-03-04

Family

ID=14360101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10366678A Pending JPS5530258A (en) 1978-08-24 1978-08-24 Signal switching circuit

Country Status (1)

Country Link
JP (1) JPS5530258A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5864131U (en) * 1981-10-25 1983-04-30 ロ−ム株式会社 Signal switching circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5864131U (en) * 1981-10-25 1983-04-30 ロ−ム株式会社 Signal switching circuit

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