JPS5781724A - Range switching device of multirange timer - Google Patents
Range switching device of multirange timerInfo
- Publication number
- JPS5781724A JPS5781724A JP15914680A JP15914680A JPS5781724A JP S5781724 A JPS5781724 A JP S5781724A JP 15914680 A JP15914680 A JP 15914680A JP 15914680 A JP15914680 A JP 15914680A JP S5781724 A JPS5781724 A JP S5781724A
- Authority
- JP
- Japan
- Prior art keywords
- timer
- multirange
- division ratio
- switching device
- switch
- 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 increase the reliability of a range switching device of a multirange timer, by using a contactless switch as a division ratio switching means of an oscillation counting type timer. CONSTITUTION:For a timer IC11 in which an oscillating circuit and a counting circuit, etc. are formed into ICs, the output terminals of photocouplers 14 and 15 are connected to division ratio switch terminals 12 and 13 of the counting circuit. A semiconductr element Q such as transistor, a C-MOS, a TTL, etc. is provided at the input side of the couplers 14 and 15 respectively to drive an LED at the light emitting part. In such constitution, the couplers 14 and 15 are driven alternately to switch the division ratio switching terminal to H or L. Thus the range can be switched. A Hall IC, etc. can be used in place of a photocoupler.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15914680A JPS5781724A (en) | 1980-11-11 | 1980-11-11 | Range switching device of multirange timer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15914680A JPS5781724A (en) | 1980-11-11 | 1980-11-11 | Range switching device of multirange timer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5781724A true JPS5781724A (en) | 1982-05-21 |
Family
ID=15687255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15914680A Pending JPS5781724A (en) | 1980-11-11 | 1980-11-11 | Range switching device of multirange timer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5781724A (en) |
-
1980
- 1980-11-11 JP JP15914680A patent/JPS5781724A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0169468A3 (en) | Electronic switching apparatus, preferably working without making contact | |
DE3776393D1 (en) | INPUT SWITCHING WITH A PHOTOCOUPLER. | |
JPS5781724A (en) | Range switching device of multirange timer | |
JPS57163216A (en) | Optical matrix switch | |
EP0398456A3 (en) | Circuit arrangement for the electrically isolated reception of binary electrical signals | |
JPS6420790A (en) | Dial pulse transmitting circuit | |
JPS5561140A (en) | Solidstate relay | |
JPS56111819A (en) | Optical circuit | |
JPS56161723A (en) | Electronic switch | |
JPS5580109A (en) | Signal output circuit | |
JPS5516580A (en) | Remote load operation circuit | |
JPS56120216A (en) | Output signal generator by manual operation | |
JPS57141133A (en) | Counter | |
JPS5617521A (en) | 2-wire type alternating switching contactless switch | |
JPS6458118A (en) | Input and output circuit | |
JPS533767A (en) | Input-output-insulation circuit using photocoupler | |
DE68927042D1 (en) | Photoelectric switch | |
JPS57190410A (en) | Sound and photo-couplers | |
JPS5711549A (en) | Signal transmission circuit | |
JPS56133675A (en) | Timer device | |
JPS6410500A (en) | Lsi incorporating eeprom | |
JPS56132822A (en) | Alternating current two-wire system electronic switch | |
JPS52137246A (en) | Transistor transistor logic circuit | |
JPS5491155A (en) | Display input circuit | |
JPS5799036A (en) | Two-wire type electronic switch |