JPS5642431A - Timer circuit - Google Patents
Timer circuitInfo
- Publication number
- JPS5642431A JPS5642431A JP12049779A JP12049779A JPS5642431A JP S5642431 A JPS5642431 A JP S5642431A JP 12049779 A JP12049779 A JP 12049779A JP 12049779 A JP12049779 A JP 12049779A JP S5642431 A JPS5642431 A JP S5642431A
- Authority
- JP
- Japan
- Prior art keywords
- counter
- timer time
- timer circuit
- timer
- pulses
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/28—Modifications for introducing a time delay before switching
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To make it possible to set long timer time, while varying the timer time continuously, by counting oscillation pulses of a variable frequency oscillator by a counter. CONSTITUTION:The timer circuit consists of variable frequency oscillator 5, counter 6 and inverter 7. Among binary count output terminals OUT of counter 6, a specific one, e.g. binary count-value output terminal OUTn at which a voltage is developed when the counter counts pulses up to 2<n>(n is integer) is used as the output terminal of the timer circuit. Consequently, the timer time, when the oscillation period of oscillator 5 is denoted as T seconds, is TX2<n> seconds and adjusting variable resistance 5d varies period T continuously, so that the timer time will be variable. Additionally, since counter 6 is used to count oscillation pulses, long timer time can freely be set.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12049779A JPS5642431A (en) | 1979-09-14 | 1979-09-14 | Timer circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12049779A JPS5642431A (en) | 1979-09-14 | 1979-09-14 | Timer circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5642431A true JPS5642431A (en) | 1981-04-20 |
Family
ID=14787655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12049779A Pending JPS5642431A (en) | 1979-09-14 | 1979-09-14 | Timer circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5642431A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61197164A (en) * | 1985-02-25 | 1986-09-01 | Kanebo Ltd | Synthetic grindstone and its production method |
JPS63251169A (en) * | 1987-04-04 | 1988-10-18 | Daichiku:Kk | Scented grinder element and its manufacture |
JPH0639732A (en) * | 1992-11-27 | 1994-02-15 | Kanebo Ltd | Manufacture of synthetic grinding wheel |
-
1979
- 1979-09-14 JP JP12049779A patent/JPS5642431A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61197164A (en) * | 1985-02-25 | 1986-09-01 | Kanebo Ltd | Synthetic grindstone and its production method |
JPH0583343B2 (en) * | 1985-02-25 | 1993-11-25 | Kanebo Ltd | |
JPS63251169A (en) * | 1987-04-04 | 1988-10-18 | Daichiku:Kk | Scented grinder element and its manufacture |
JPH0639732A (en) * | 1992-11-27 | 1994-02-15 | Kanebo Ltd | Manufacture of synthetic grinding wheel |
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