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JPS5558802A - Detection circuit for period of operation of variable resistor - Google Patents

Detection circuit for period of operation of variable resistor

Info

Publication number
JPS5558802A
JPS5558802A JP13239078A JP13239078A JPS5558802A JP S5558802 A JPS5558802 A JP S5558802A JP 13239078 A JP13239078 A JP 13239078A JP 13239078 A JP13239078 A JP 13239078A JP S5558802 A JPS5558802 A JP S5558802A
Authority
JP
Japan
Prior art keywords
period
variable resistor
signal
circuit
operated
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
JP13239078A
Other languages
Japanese (ja)
Other versions
JPS6115481B2 (en
Inventor
Mitsuru Hanajima
Shuichi Kimura
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 JP13239078A priority Critical patent/JPS5558802A/en
Publication of JPS5558802A publication Critical patent/JPS5558802A/en
Publication of JPS6115481B2 publication Critical patent/JPS6115481B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To aviod destruction of constituents due to electrostatic induction, by surely detecting the period when the variable resistor is operated, through the discrimination of detection signal for the pulse width during the period when the variable resistor is in operation.
CONSTITUTION: The signal level of control signal fed to the controlled circuit is changed by the variable resistor 1, the differentiated output signal of the control signal is outputted from the differentiation circuit 15, and the differentiation signal is made for level discrimination at a given level with the level discrimination circuit 17. Further, the detection output signal having the pulse width depending on the period when the resistor 1 is operated is fed to the gate circuit 19. Thus, the period when the variable resistor is operated is surely detected and the constituents can be avoided from being destroyed due to electrostatic induction.
COPYRIGHT: (C)1980,JPO&Japio
JP13239078A 1978-10-27 1978-10-27 Detection circuit for period of operation of variable resistor Granted JPS5558802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13239078A JPS5558802A (en) 1978-10-27 1978-10-27 Detection circuit for period of operation of variable resistor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13239078A JPS5558802A (en) 1978-10-27 1978-10-27 Detection circuit for period of operation of variable resistor

Publications (2)

Publication Number Publication Date
JPS5558802A true JPS5558802A (en) 1980-05-01
JPS6115481B2 JPS6115481B2 (en) 1986-04-24

Family

ID=15080256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13239078A Granted JPS5558802A (en) 1978-10-27 1978-10-27 Detection circuit for period of operation of variable resistor

Country Status (1)

Country Link
JP (1) JPS5558802A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0548047Y2 (en) * 1988-03-05 1993-12-20
JPH03177769A (en) * 1989-12-06 1991-08-01 Sanden Corp Constant temperature showcase

Also Published As

Publication number Publication date
JPS6115481B2 (en) 1986-04-24

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