JPS5582091A - Automatic clear circuit - Google Patents
Automatic clear circuitInfo
- Publication number
- JPS5582091A JPS5582091A JP15666578A JP15666578A JPS5582091A JP S5582091 A JPS5582091 A JP S5582091A JP 15666578 A JP15666578 A JP 15666578A JP 15666578 A JP15666578 A JP 15666578A JP S5582091 A JPS5582091 A JP S5582091A
- Authority
- JP
- Japan
- Prior art keywords
- gates
- circuit
- time constant
- capacitor
- time
- 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
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G5/00—Setting, i.e. correcting or changing, the time-indication
- G04G5/005—Debouncing circuits
Abstract
PURPOSE:To produce the automatic clear signal excellent in the noise proof performance and small in error, by using the delay time for the output response due to the time constant of the boosting circuit. CONSTITUTION:The gates G1 and G2 of the boosting circuit 1 are conducted at the low level of the clock outputted from the frequency demultiplier 6 and the gates G2, G4 are conducted at high level. Thus, the capacitor C1 is charged with the time constant of the resistor of the gates G1, G2 and the internal resistor of the battery E, and the charging up voltage of the capacitor C1 is discharged to the capacitor C2 and distributed with the time constant of the similar resistors of the gates G2, G4. As a result, high level output sets D-type FF3 after the time T in response to the time constant of the circuit 1 to the application of power supply by the switch 8 from the level down circuit 2 to which the threshold value voltage is set. Thus, via the latch circuit 4 producing the output delayed by a half period than the clock and the leading detection circuit 5 consisting of NOR gates, the automatic clear signal is accurately produced with the clock shifted by a half period through the response delay for a given time at the application of power supply having many noises.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15666578A JPS5582091A (en) | 1978-12-15 | 1978-12-15 | Automatic clear circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15666578A JPS5582091A (en) | 1978-12-15 | 1978-12-15 | Automatic clear circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5582091A true JPS5582091A (en) | 1980-06-20 |
Family
ID=15632619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15666578A Pending JPS5582091A (en) | 1978-12-15 | 1978-12-15 | Automatic clear circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5582091A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104882A (en) * | 1980-12-22 | 1982-06-30 | Seiko Epson Corp | Power on clear circuit in electronic watch |
| JPS62247282A (en) * | 1987-03-05 | 1987-10-28 | Seiko Epson Corp | Pointer type electronic timepiece |
| US9623414B2 (en) | 2003-05-23 | 2017-04-18 | Bio-Rad Laboratories, Inc. | Localized temperature control for spatial arrays of reaction media |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5153857A (en) * | 1974-11-05 | 1976-05-12 | Sharp Kk | Denshiudedokeino jidokuryasochi |
-
1978
- 1978-12-15 JP JP15666578A patent/JPS5582091A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5153857A (en) * | 1974-11-05 | 1976-05-12 | Sharp Kk | Denshiudedokeino jidokuryasochi |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104882A (en) * | 1980-12-22 | 1982-06-30 | Seiko Epson Corp | Power on clear circuit in electronic watch |
| JPS62247282A (en) * | 1987-03-05 | 1987-10-28 | Seiko Epson Corp | Pointer type electronic timepiece |
| US9623414B2 (en) | 2003-05-23 | 2017-04-18 | Bio-Rad Laboratories, Inc. | Localized temperature control for spatial arrays of reaction media |
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