JPS5750129A - Wave shaping circuit - Google Patents

Wave shaping circuit

Info

Publication number
JPS5750129A
JPS5750129A JP12455380A JP12455380A JPS5750129A JP S5750129 A JPS5750129 A JP S5750129A JP 12455380 A JP12455380 A JP 12455380A JP 12455380 A JP12455380 A JP 12455380A JP S5750129 A JPS5750129 A JP S5750129A
Authority
JP
Japan
Prior art keywords
circuit
shaping circuit
voltage
power supply
wave
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
JP12455380A
Other languages
Japanese (ja)
Inventor
Eisaku Akutsu
Toshio Nagashima
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 Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12455380A priority Critical patent/JPS5750129A/en
Publication of JPS5750129A publication Critical patent/JPS5750129A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/08—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding
    • H03K5/082—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To obtain a wave shaping circuit which operates stably and is suitable for the channel selector of a TV receiver, by inversely compensating the signal level variance amount due to the variance in the power supply voltage subjected to the circuit before the wave shaping circuit, through the control of a comparison voltage of a wave shaping circuit. CONSTITUTION:An input signal of a TV receiver is wave-shaped and a regulating circuit 16 which regulates the power supply +B is connected to a wave shaping circuit 5 of a channel selector applied to an electronic tuner. The shaping circuit 5 consists of an operational amplifier 56 and resistors 51-55, and a voltage regulated with a resistor 17, Zener diode 18 and capacitor 19 of the circuit 16 is divided at a specified voltage at the resistors 51, 52 and applied to an inverting terminal of the amplifier 56 as a comparison voltage. The wave shape input is inputted to a noninverting terminal of the amplifier 56 via the resistor 54 and the output is fed back to the input side via the resistor 55. The amplifier 56 is actuated with the power supply +B, and the level variance in which circuits before the circuit 5 receive because of the power supply voltage is inversely compensated at a comparison voltage made at circuit 16, allowing to operate the channel selector stably.
JP12455380A 1980-09-10 1980-09-10 Wave shaping circuit Pending JPS5750129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12455380A JPS5750129A (en) 1980-09-10 1980-09-10 Wave shaping circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12455380A JPS5750129A (en) 1980-09-10 1980-09-10 Wave shaping circuit

Publications (1)

Publication Number Publication Date
JPS5750129A true JPS5750129A (en) 1982-03-24

Family

ID=14888322

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12455380A Pending JPS5750129A (en) 1980-09-10 1980-09-10 Wave shaping circuit

Country Status (1)

Country Link
JP (1) JPS5750129A (en)

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