JPS5451448A - Switching amplifier - Google Patents

Switching amplifier

Info

Publication number
JPS5451448A
JPS5451448A JP11803677A JP11803677A JPS5451448A JP S5451448 A JPS5451448 A JP S5451448A JP 11803677 A JP11803677 A JP 11803677A JP 11803677 A JP11803677 A JP 11803677A JP S5451448 A JPS5451448 A JP S5451448A
Authority
JP
Japan
Prior art keywords
base
turned
terminal
output
signal source
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.)
Granted
Application number
JP11803677A
Other languages
Japanese (ja)
Other versions
JPS6040732B2 (en
Inventor
Masayoshi Tanabe
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP52118036A priority Critical patent/JPS6040732B2/en
Publication of JPS5451448A publication Critical patent/JPS5451448A/en
Publication of JPS6040732B2 publication Critical patent/JPS6040732B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To select the first and second signal sources electronically, by feeding the control voltage to the base of the first and second transistor Tr of the opposite polarity, inputting the first and second signal source and interrupting the common power supply of the control voltage. CONSTITUTION:When the switch 22 is turned ON, the base current of PNP Tr 100 is flowed, Tr 10 is conducted. If the amplification factor A is 1 when the same values of resistors 16 and 18 are taken, and the output of the signal source 1 is taken place at the terminal 24. Since NPN Tr 11 is grounded for the base via the resistor 20 and no base current is flowed, Tr 11 is not the load of Tr 10. When the switch 22 is turned OFF, voltage Vcc is fed to the base of Tr11 via resistors 21 and 20, Tr11 is conductive, and the output of the signal source 2 is taken place at the terminal 24. At this time, the amplification factor of Tr11 is 1 since the collector is connected to Vcc. The base of tr 10 is turned off with backbias and it is not the load of Tr11. Thus, the output of the signal sources 1 and 2 is outputted to the terminal 24 selectively.
JP52118036A 1977-09-30 1977-09-30 switching amplifier Expired JPS6040732B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52118036A JPS6040732B2 (en) 1977-09-30 1977-09-30 switching amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52118036A JPS6040732B2 (en) 1977-09-30 1977-09-30 switching amplifier

Publications (2)

Publication Number Publication Date
JPS5451448A true JPS5451448A (en) 1979-04-23
JPS6040732B2 JPS6040732B2 (en) 1985-09-12

Family

ID=14726452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52118036A Expired JPS6040732B2 (en) 1977-09-30 1977-09-30 switching amplifier

Country Status (1)

Country Link
JP (1) JPS6040732B2 (en)

Also Published As

Publication number Publication date
JPS6040732B2 (en) 1985-09-12

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