JPS5446417A - Electronic apparatus - Google Patents

Electronic apparatus

Info

Publication number
JPS5446417A
JPS5446417A JP11377077A JP11377077A JPS5446417A JP S5446417 A JPS5446417 A JP S5446417A JP 11377077 A JP11377077 A JP 11377077A JP 11377077 A JP11377077 A JP 11377077A JP S5446417 A JPS5446417 A JP S5446417A
Authority
JP
Japan
Prior art keywords
voltage
frequency range
base
output terminal
low
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
JP11377077A
Other languages
Japanese (ja)
Other versions
JPS6224991B2 (en
Inventor
Toshio Teramoto
Shizuka Ishibashi
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.)
Hitachi Denshi KK
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 JP11377077A priority Critical patent/JPS5446417A/en
Publication of JPS5446417A publication Critical patent/JPS5446417A/en
Publication of JPS6224991B2 publication Critical patent/JPS6224991B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)
  • Details Of Television Systems (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE: To enable a TV receiver, etc., to make the transmission with a signal superposed upon a power voltage by the use of a circuit which has low impedance in a low-frequency range and high impedance in a high-frequency range for signals.
CONSTITUTION: Rectifier circuit REC is connected to input terminals INa and Inb and in a low-frequency range, Q2 is applied at its base with a constant voltage from constant-voltage diode ZD, and Q3 is at its base with a voltage divided between R4 and R5; the comparionn voltage between the both appears at the collector of Q2, by which the collector voltage of output control Q1, thereby keeping constant the voltage between output terminals OUTa and OUTb. In a high-frequency range, on the other hand, the disturbance generated at an output terminal is bypast by R5 and is not applied to Q3 at its base. The impedance viewed from the output terminal is therefore high and signals from signal source SG can be transmitted to the load side of the output terminal
COPYRIGHT: (C)1979,JPO&Japio
JP11377077A 1977-09-20 1977-09-20 Electronic apparatus Granted JPS5446417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11377077A JPS5446417A (en) 1977-09-20 1977-09-20 Electronic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11377077A JPS5446417A (en) 1977-09-20 1977-09-20 Electronic apparatus

Publications (2)

Publication Number Publication Date
JPS5446417A true JPS5446417A (en) 1979-04-12
JPS6224991B2 JPS6224991B2 (en) 1987-06-01

Family

ID=14620683

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11377077A Granted JPS5446417A (en) 1977-09-20 1977-09-20 Electronic apparatus

Country Status (1)

Country Link
JP (1) JPS5446417A (en)

Also Published As

Publication number Publication date
JPS6224991B2 (en) 1987-06-01

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