JPS5640731A - Measuring unit of stylus pressure - Google Patents
Measuring unit of stylus pressureInfo
- 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
Links
Landscapes
- 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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4974079A (en) * | 1972-11-14 | 1974-07-17 |
-
1979
- 1979-10-12 JP JP13204179A patent/JPS5640731A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4974079A (en) * | 1972-11-14 | 1974-07-17 |
Cited By (1)
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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