JPS5640731A - Measuring unit of stylus pressure - Google Patents

Measuring unit of stylus pressure

Info

Publication number
JPS5640731A
JPS5640731A JP13204179A JP13204179A JPS5640731A JP S5640731 A JPS5640731 A JP S5640731A JP 13204179 A JP13204179 A JP 13204179A JP 13204179 A JP13204179 A JP 13204179A JP S5640731 A JPS5640731 A JP S5640731A
Authority
JP
Japan
Prior art keywords
stylus pressure
tone arm
capacitor
constitution
switch
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
JP13204179A
Other languages
Japanese (ja)
Inventor
Masao Takuma
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP13204179A priority Critical patent/JPS5640731A/en
Publication of JPS5640731A publication Critical patent/JPS5640731A/en
Pending legal-status Critical Current

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  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

PURPOSE: To enable accurate stylus pressure measurement easily, by automatically performing the correction of zero point in correlation with the movement of tone arm.
CONSTITUTION: The Hall voltage output from the Hall element 1 is changed by changing the magnetic field fed to the Hall element 1 according to the stylus pressure, to measure the stylus pressure. The zero point correction is made by on/off of the switch S in interlocking with the tone arm, by the charging voltage of the capacitor C1 when the tone arm is out of the measured position and the switch S is on. Further, the time constant circuit 25 consisting of the resistor R9 and the capacitor C3 is provided, and constitution is made that the stylus pressure display is made after a given time from the state of stylus pressure measurement, allowing to prevent mismeasurement.
COPYRIGHT: (C)1981,JPO&Japio
JP13204179A 1979-10-12 1979-10-12 Measuring unit of stylus pressure Pending JPS5640731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13204179A JPS5640731A (en) 1979-10-12 1979-10-12 Measuring unit of stylus pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13204179A JPS5640731A (en) 1979-10-12 1979-10-12 Measuring unit of stylus pressure

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP11751079A Division JPS5640729A (en) 1979-09-12 1979-09-12 Display unit of stylus pressure for record disc stylus

Publications (1)

Publication Number Publication Date
JPS5640731A true JPS5640731A (en) 1981-04-17

Family

ID=15072121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13204179A Pending JPS5640731A (en) 1979-10-12 1979-10-12 Measuring unit of stylus pressure

Country Status (1)

Country Link
JP (1) JPS5640731A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100798636B1 (en) 2007-10-26 2008-01-28 주식회사 루트로닉 A nd:yap laser apparatus for removing fatty tissue

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4974079A (en) * 1972-11-14 1974-07-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4974079A (en) * 1972-11-14 1974-07-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100798636B1 (en) 2007-10-26 2008-01-28 주식회사 루트로닉 A nd:yap laser apparatus for removing fatty tissue

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