JPS5479063A - Indicating device - Google Patents
Indicating deviceInfo
- Publication number
- JPS5479063A JPS5479063A JP14581077A JP14581077A JPS5479063A JP S5479063 A JPS5479063 A JP S5479063A JP 14581077 A JP14581077 A JP 14581077A JP 14581077 A JP14581077 A JP 14581077A JP S5479063 A JPS5479063 A JP S5479063A
- Authority
- JP
- Japan
- Prior art keywords
- indicator
- peak
- amplifier
- indication
- levels
- 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
Abstract
PURPOSE: To perform monitor level adjustment always accurately and evenly with a simple constitution and facilitate circuit integration of the indicating device by changing over indicator indication levels according to the count values of peak levels.
CONSTITUTION: The recording current of a tape recorder through a buffer amplifier A, absolute value amplifier B and operational amplifier 15 causes the transistors Q1, Q2... of an indicator E conduct subsequently, then light emitting diodes D11, D12... light and the indicator E makes indication of VU levels, etc. On the other hand, the peak outputs of the amplifier 15 are detected with an operational amplifier 18 and the differentiation outputs by a capacitor C2, resistance R30 are counted by counter 27 for the specified time by a multi G and counter 25. An FET 21 which forms a switch circuit is conducted by the comparison output of a comparator 23 in which said count values become above a set value, and the indicator E is changed over to peak value indication by the low amplification integrated value corresponding to the peak values through a capacitor C1 and resistance R11.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14581077A JPS5479063A (en) | 1977-12-05 | 1977-12-05 | Indicating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14581077A JPS5479063A (en) | 1977-12-05 | 1977-12-05 | Indicating device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5479063A true JPS5479063A (en) | 1979-06-23 |
Family
ID=15393653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14581077A Pending JPS5479063A (en) | 1977-12-05 | 1977-12-05 | Indicating device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5479063A (en) |
-
1977
- 1977-12-05 JP JP14581077A patent/JPS5479063A/en active Pending
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