JPS55145035A - Flashing apparatus - Google Patents
Flashing apparatusInfo
- Publication number
- JPS55145035A JPS55145035A JP5104179A JP5104179A JPS55145035A JP S55145035 A JPS55145035 A JP S55145035A JP 5104179 A JP5104179 A JP 5104179A JP 5104179 A JP5104179 A JP 5104179A JP S55145035 A JPS55145035 A JP S55145035A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- comparator
- current
- voltage
- oscillation circuit
- 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
- Audible And Visible Signals (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
PURPOSE:To increase flashing speed while reducing lighting rate to facilitate the confirmation of flashing by providing a comparator for comapring current in a display element with the reference current and an oscillation circuit for comparing threshold voltage with voltage across a time constant circuit. CONSTITUTION:When a switch S1 is turned either left or right, output 4 from a nonstable oscillation circuit constituted from an amplifier A2 and ambient circuits operates a relay RY to close a switch SRY and turn on and off incandescent lamps L1-L3 or L4-L6. An amplifier A1 is a comparator constituted from a difference amplifier used for detecting load current (or for detecting disconnection of wire) and compares voltage applied to the positive input terminal 6 of the amplifier A1 with the threshold value voltage. Also, the amplifier A1 is subjected to negative feed-back in the interior to constitute as a whole a logarithmic conversion circuit. Thus, the change of current in the incandescent lamp changes the threshold voltage of the oscillation circuit according to the output of the comparator to thereby change the flashing speed and lighting time.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5104179A JPS55145035A (en) | 1979-04-24 | 1979-04-24 | Flashing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5104179A JPS55145035A (en) | 1979-04-24 | 1979-04-24 | Flashing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55145035A true JPS55145035A (en) | 1980-11-12 |
Family
ID=12875708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5104179A Pending JPS55145035A (en) | 1979-04-24 | 1979-04-24 | Flashing apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55145035A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987003548A1 (en) * | 1985-12-11 | 1987-06-18 | Jasmond Pty. Ltd. | Adaptive switching circuit |
DE10346695B4 (en) * | 2002-10-08 | 2008-08-07 | Koito Manufacturing Co., Ltd. | vehicle light |
-
1979
- 1979-04-24 JP JP5104179A patent/JPS55145035A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987003548A1 (en) * | 1985-12-11 | 1987-06-18 | Jasmond Pty. Ltd. | Adaptive switching circuit |
DE10346695B4 (en) * | 2002-10-08 | 2008-08-07 | Koito Manufacturing Co., Ltd. | vehicle light |
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