JPS55143442A - Voltage detector - Google Patents
Voltage detectorInfo
- Publication number
- JPS55143442A JPS55143442A JP5220579A JP5220579A JPS55143442A JP S55143442 A JPS55143442 A JP S55143442A JP 5220579 A JP5220579 A JP 5220579A JP 5220579 A JP5220579 A JP 5220579A JP S55143442 A JPS55143442 A JP S55143442A
- Authority
- JP
- Japan
- Prior art keywords
- indicating lamp
- amplifier
- display
- voltage
- voltage detector
- 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
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
PURPOSE: To improve the reliability by providing a stable fault detecting circuit to a voltage detector circuit.
CONSTITUTION: While power amplifier 2 is put in normal operation, both electromotive forces E1 and E2 of output transformer 3 and intermediate transformer 7 are equal and opposite in direction, so that no input voltage will be applied to display part amplifier 8. Indicating lamp 9 never comes on in consequence. For example, if power amplifier 2 gets out of order, indicating lamp 9 comes on, providing fault display. As the system changes in frequency, the output of band-pass filter 5 also changes and a voltage is applied to display amplifier 8, so that indicating lamp 9 will come on.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5220579A JPS55143442A (en) | 1979-04-27 | 1979-04-27 | Voltage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5220579A JPS55143442A (en) | 1979-04-27 | 1979-04-27 | Voltage detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55143442A true JPS55143442A (en) | 1980-11-08 |
Family
ID=12908267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5220579A Pending JPS55143442A (en) | 1979-04-27 | 1979-04-27 | Voltage detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55143442A (en) |
-
1979
- 1979-04-27 JP JP5220579A patent/JPS55143442A/en active Pending
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