JPS5621071A - Signal level indicator - Google Patents
Signal level indicatorInfo
- Publication number
- JPS5621071A JPS5621071A JP9676679A JP9676679A JPS5621071A JP S5621071 A JPS5621071 A JP S5621071A JP 9676679 A JP9676679 A JP 9676679A JP 9676679 A JP9676679 A JP 9676679A JP S5621071 A JPS5621071 A JP S5621071A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- capacitor
- level indicator
- rectified
- charges
- 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
- Measurement Of Current Or Voltage (AREA)
Abstract
PURPOSE: To make reading of a level indicator easier by appropriately controlling a field-effect transistor connected in parallel with a capacitor whose voltage is indicated by the level indicator.
CONSTITUTION: The signal voltage of a signal source 1 is rectified by a diode 5 and charges a capacitor C1 with a positive voltage, the voltage of the capacitor C1 is amplified by a DC amplifier 3 and then applied to a level indicator 4, and the level of the input signal is indicated. On the other hand, the voltage of the input signal is rectified by a diode 6 in reverse direction and charges a capacitor C2, and the voltage of the charged capacitor C2 is adjusted to an appropriate value with a variable resistor 8 and applied to the gate of a field-effect transistor 7 as a control voltage.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9676679A JPS5621071A (en) | 1979-07-31 | 1979-07-31 | Signal level indicator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9676679A JPS5621071A (en) | 1979-07-31 | 1979-07-31 | Signal level indicator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5621071A true JPS5621071A (en) | 1981-02-27 |
Family
ID=14173749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9676679A Pending JPS5621071A (en) | 1979-07-31 | 1979-07-31 | Signal level indicator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5621071A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014071674A1 (en) * | 2012-11-09 | 2014-05-15 | 联合汽车电子有限公司 | Direct-current isolation buck convertor and bus voltage detection circuit thereof |
-
1979
- 1979-07-31 JP JP9676679A patent/JPS5621071A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014071674A1 (en) * | 2012-11-09 | 2014-05-15 | 联合汽车电子有限公司 | Direct-current isolation buck convertor and bus voltage detection circuit thereof |
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