JPS5544238A - Signal switching circuit - Google Patents

Signal switching circuit

Info

Publication number
JPS5544238A
JPS5544238A JP11693578A JP11693578A JPS5544238A JP S5544238 A JPS5544238 A JP S5544238A JP 11693578 A JP11693578 A JP 11693578A JP 11693578 A JP11693578 A JP 11693578A JP S5544238 A JPS5544238 A JP S5544238A
Authority
JP
Japan
Prior art keywords
terminal
transistor
low level
signal
switching 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
JP11693578A
Other languages
Japanese (ja)
Inventor
Yoshio Horiike
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 JP11693578A priority Critical patent/JPS5544238A/en
Publication of JPS5544238A publication Critical patent/JPS5544238A/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
    • H03K17/16—Modifications for eliminating interference voltages or currents

Landscapes

  • Television Receiver Circuits (AREA)
  • Electronic Switches (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To prevent the occurrence of noise such as switching sound accompanied with switching, by avoiding the change in DC voltage due to switching operation at the output stage. CONSTITUTION:When a selection signal is inputted to the terminal c, the a terminal side is ON and at low level with the terminal c at low level. On the other hand, the terminal a' side is OFF and it is biased to +V. Accordingly, the transistor Q3 is OFF, Q4 is ON, and the signal at the terminal a' is outputted to the terminal b. Next, when the terminal c is at high level, the terminal a side is OFF, and the terminal a' is ON. Accordingly, the terminal a is biased to +V and the terminal a' is at low level. Thus, the transistor Q3 is ON, Q4 is OFF, and the signal at the terminal a is outputted to the terminal b. By using the same characteristics of transistor for Q3 and Q4, only VBE and VBE' variation is present, and the DC voltage at the terminal b is not changed by switching operation.
JP11693578A 1978-09-22 1978-09-22 Signal switching circuit Pending JPS5544238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11693578A JPS5544238A (en) 1978-09-22 1978-09-22 Signal switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11693578A JPS5544238A (en) 1978-09-22 1978-09-22 Signal switching circuit

Publications (1)

Publication Number Publication Date
JPS5544238A true JPS5544238A (en) 1980-03-28

Family

ID=14699336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11693578A Pending JPS5544238A (en) 1978-09-22 1978-09-22 Signal switching circuit

Country Status (1)

Country Link
JP (1) JPS5544238A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57204746U (en) * 1981-06-24 1982-12-27
JPS57212826A (en) * 1981-06-24 1982-12-27 Matsushita Electric Ind Co Ltd Signal switching circuit
JPS59195996A (en) * 1983-04-20 1984-11-07 日本国有鉄道 Tunnel constructing method
JP2007003570A (en) * 2005-06-21 2007-01-11 Yazaki Corp Liquid crystal display holder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57204746U (en) * 1981-06-24 1982-12-27
JPS57212826A (en) * 1981-06-24 1982-12-27 Matsushita Electric Ind Co Ltd Signal switching circuit
JPS59195996A (en) * 1983-04-20 1984-11-07 日本国有鉄道 Tunnel constructing method
JP2007003570A (en) * 2005-06-21 2007-01-11 Yazaki Corp Liquid crystal display holder

Similar Documents

Publication Publication Date Title
JPS5544238A (en) Signal switching circuit
JPS52112261A (en) Power amplifier circuit
JPS555552A (en) Dc reproducing circuit
JPS6453611A (en) Driver circuit
JPS54111261A (en) Signal switching circuit
JPS53131457A (en) Constant voltage circuit
JPS5745715A (en) Schmitt trigger circuit
JPS5543643A (en) Constant voltage circuit
JPS561769A (en) Constant current circuit
JPS6477320A (en) Charging pump circuit
JPS54111260A (en) Level shift circuit
JPS57162521A (en) Gate circuit
JPS57112134A (en) Semiconductor circuit
JPS5753152A (en) Inverter circuit
JPS56162539A (en) Signal-line driving circuit
JPS5373342A (en) Switching circuit
JPS56166518A (en) Power supply circuit
JPS51111036A (en) Transistor circuit
JPS57142012A (en) Transistor circuit
JPS5363954A (en) Current mirror circuit
JPS56120216A (en) Output signal generator by manual operation
JPS5797227A (en) Electronic switching amplifying circuit
JPS5575315A (en) Output amplifier circuit
JPS5518106A (en) Switch circuit
JPS52117543A (en) Transistor circuit