JPS5259559A - Signal level selector - Google Patents

Signal level selector

Info

Publication number
JPS5259559A
JPS5259559A JP13505275A JP13505275A JPS5259559A JP S5259559 A JPS5259559 A JP S5259559A JP 13505275 A JP13505275 A JP 13505275A JP 13505275 A JP13505275 A JP 13505275A JP S5259559 A JPS5259559 A JP S5259559A
Authority
JP
Japan
Prior art keywords
signal level
level selector
output level
change
level
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
JP13505275A
Other languages
Japanese (ja)
Inventor
Katsuhisa Akiyoshi
Hiroshi Koma
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.)
Kokusai Denki Electric Inc
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP13505275A priority Critical patent/JPS5259559A/en
Publication of JPS5259559A publication Critical patent/JPS5259559A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To change over automatically the output level of an LF amplifier, a transistorized signal selector circuit is added, so that with a simple construction, the dispersion of the output level can be minimized and the change-over level can be made larger.
JP13505275A 1975-11-12 1975-11-12 Signal level selector Pending JPS5259559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13505275A JPS5259559A (en) 1975-11-12 1975-11-12 Signal level selector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13505275A JPS5259559A (en) 1975-11-12 1975-11-12 Signal level selector

Publications (1)

Publication Number Publication Date
JPS5259559A true JPS5259559A (en) 1977-05-17

Family

ID=15142789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13505275A Pending JPS5259559A (en) 1975-11-12 1975-11-12 Signal level selector

Country Status (1)

Country Link
JP (1) JPS5259559A (en)

Similar Documents

Publication Publication Date Title
JPS5259559A (en) Signal level selector
JPS52115610A (en) Signal transmission circuit
JPS52127114A (en) Muting circuit
JPS51113727A (en) Loud speaker
JPS52132767A (en) Logic circuit
JPS5370479A (en) Photo agc system
JPS5341969A (en) Analogue signal selecting circuit
JPS5216107A (en) Signal judging circuit
JPS534457A (en) Amplifier circuit
JPS51134505A (en) Automatic telephone volume control according to the ambient noises
JPS5370480A (en) Photo agc system
JPS5244137A (en) Analog integration circuit
JPS5289046A (en) Automatic balanced amplification circuit
JPS52153653A (en) Logarithmic amplifier
JPS5271911A (en) Dc-ac amplitude modulation transmitting system
JPS5289043A (en) Gain control circuit
JPS5251987A (en) Signal adding circuit in smoke detector
JPS51134171A (en) Automatic sensitivity-adjusting circuit
JPS5380942A (en) Filter circuit
JPS5253604A (en) Digital transmission output memory system
JPS5353909A (en) Signal unit for call tone
JPS5342651A (en) Defferential amplifier circuit
JPS5242039A (en) Pulse width signal convertor for digital signals
JPS52122062A (en) Interface circuit
JPS51117856A (en) Automatic gain control circuit