JPS5761329A - Zero crossing signal detection circuit - Google Patents
Zero crossing signal detection circuitInfo
- Publication number
- JPS5761329A JPS5761329A JP55137271A JP13727180A JPS5761329A JP S5761329 A JPS5761329 A JP S5761329A JP 55137271 A JP55137271 A JP 55137271A JP 13727180 A JP13727180 A JP 13727180A JP S5761329 A JPS5761329 A JP S5761329A
- Authority
- JP
- Japan
- Prior art keywords
- level
- section
- voltage signal
- timing
- outputs
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K6/00—Manipulating pulses having a finite slope and not covered by one of the other main groups of this subclass
Landscapes
- Manipulation Of Pulses (AREA)
- Electronic Switches (AREA)
Abstract
PURPOSE:To detect correct zero crossing signal by removing noise pulse, by setting so that the latch section outputs an L level voltage signal only when the timing pulse is rised and a gate section outputs always an H level voltage signal while delaying the time. CONSTITUTION:A gate section A outputs a voltage signal of an H level while inputting a voltage approx. zero level and less than the specified value Vth by setting a full wave rectification voltage of commercial power supply from an input terminal 6 to input. A timing section B connected to the gate section A receives the H level voltage signal and outputs the timing pulses having the pulse width of TP after a constant delay time Td has passed. A latch section C which is connected to the gate section A and the timing section B outputs the voltage signal of L level when the timing pulse of the timing section B is rised simultaneously when it outpts the voltage signal of H level when the voltage signal of H level of the gate section A is rised.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55137271A JPS5761329A (en) | 1980-09-30 | 1980-09-30 | Zero crossing signal detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55137271A JPS5761329A (en) | 1980-09-30 | 1980-09-30 | Zero crossing signal detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5761329A true JPS5761329A (en) | 1982-04-13 |
| JPH0315371B2 JPH0315371B2 (en) | 1991-02-28 |
Family
ID=15194765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55137271A Granted JPS5761329A (en) | 1980-09-30 | 1980-09-30 | Zero crossing signal detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5761329A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01278118A (en) * | 1988-04-30 | 1989-11-08 | Hitachi Koki Co Ltd | Detecting circuit for power supply zero-volt cross point |
| JP2007064892A (en) * | 2005-09-01 | 2007-03-15 | Ricoh Co Ltd | Image forming apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50107848A (en) * | 1974-01-30 | 1975-08-25 | ||
| JPS526449U (en) * | 1975-06-30 | 1977-01-18 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS526449B2 (en) * | 1972-09-18 | 1977-02-22 |
-
1980
- 1980-09-30 JP JP55137271A patent/JPS5761329A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50107848A (en) * | 1974-01-30 | 1975-08-25 | ||
| JPS526449U (en) * | 1975-06-30 | 1977-01-18 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01278118A (en) * | 1988-04-30 | 1989-11-08 | Hitachi Koki Co Ltd | Detecting circuit for power supply zero-volt cross point |
| JP2007064892A (en) * | 2005-09-01 | 2007-03-15 | Ricoh Co Ltd | Image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0315371B2 (en) | 1991-02-28 |
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