JPS5483346A - Division circuit - Google Patents

Division circuit

Info

Publication number
JPS5483346A
JPS5483346A JP15134777A JP15134777A JPS5483346A JP S5483346 A JPS5483346 A JP S5483346A JP 15134777 A JP15134777 A JP 15134777A JP 15134777 A JP15134777 A JP 15134777A JP S5483346 A JPS5483346 A JP S5483346A
Authority
JP
Japan
Prior art keywords
output
becomes
division
current
divisor
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
JP15134777A
Other languages
Japanese (ja)
Other versions
JPS6054705B2 (en
Inventor
Takahisa Tsuchiya
Yoshio Ishigaki
Takafumi Okada
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP52151347A priority Critical patent/JPS6054705B2/en
Publication of JPS5483346A publication Critical patent/JPS5483346A/en
Publication of JPS6054705B2 publication Critical patent/JPS6054705B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To make the division output a zero as the input signal which becomes the divisor draws near the zero, so that even when a noise enters the input, no output with an amplified noise will be produced. CONSTITUTION:Between the emitter currents of transistors Q1 and Q7, the relationship of i4/(i4+i5)=I7/(I6+I7) becomes valid. When voltage VA is applied to Q3, I6+I7=VA/R3 is obtained. Since the circuit has been formed within one and the same chip, values of VBE of Q1 to Q7 are considered all equal; and when current i0 which flows through resistance R0 is calculated if base voltages of Q6 and Q7 are denoted by VC, a relationship i0=VC/R0 is obtained, and i4 and i5 will become (VC/R+ or -R3/R1 R0XVBXVC/VA)/2. When these values are inputted to differential amplifier circuit 27, VC/R is cancelled out and output porportionate to VB/VA is obtained. When VA=0, output SD is 0, since current I6 and I7 do not flow. When VA<0, output SD becomes negative output, because current source 21B is actuated to actuate, in turn, division part 15B. In this way, even if both VA and VB change, when division output becomes 0 as the divisor draws near 0, corresponding SD can be obtained.
JP52151347A 1977-12-16 1977-12-16 division circuit Expired JPS6054705B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52151347A JPS6054705B2 (en) 1977-12-16 1977-12-16 division circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52151347A JPS6054705B2 (en) 1977-12-16 1977-12-16 division circuit

Publications (2)

Publication Number Publication Date
JPS5483346A true JPS5483346A (en) 1979-07-03
JPS6054705B2 JPS6054705B2 (en) 1985-12-02

Family

ID=15516570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52151347A Expired JPS6054705B2 (en) 1977-12-16 1977-12-16 division circuit

Country Status (1)

Country Link
JP (1) JPS6054705B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS627906A (en) * 1985-07-05 1987-01-14 Honda Motor Co Ltd Tappet of internal-combustion engine
JPS6210407A (en) * 1985-07-05 1987-01-19 Honda Motor Co Ltd Tappet device of v-engine

Also Published As

Publication number Publication date
JPS6054705B2 (en) 1985-12-02

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