JPS5718121A - Astable semiconductor switch device - Google Patents
Astable semiconductor switch deviceInfo
- Publication number
- JPS5718121A JPS5718121A JP9267380A JP9267380A JPS5718121A JP S5718121 A JPS5718121 A JP S5718121A JP 9267380 A JP9267380 A JP 9267380A JP 9267380 A JP9267380 A JP 9267380A JP S5718121 A JPS5718121 A JP S5718121A
- Authority
- JP
- Japan
- Prior art keywords
- scr
- gate
- turned
- current flows
- resistance
- 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
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/35—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
- H03K3/352—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region the devices being thyristors
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To make and break an SCR by a stable period, by dividing main voltage by resistances which have been connected among anode-gate-cathode of an SCR, applying it to the gate, and making and breaking a switch which has been connected between the gate and the cathode, by a heat sensible element which has been coupled to a separate resistance circuit. CONSTITUTION:At first, a thermistor 12 is cool, a transistor 10 is turned on through a resistance 11, an SCR7 is off, and a half-wave current flows into an electric lamp 2 through a diode 6. A temperature of the element 12 rises, and when the transistor 10 is turned off at least, a trigger current flows into a gate G of the SCR7 through a resistance 8, it is turned on, and a full-wave current flows into the electric lamp 2. In this case, voltage between terminals 3, 4 drops, heating of the resistance 11 is reduced, the element 12 becomes cool, the SCR is turned off at last, and a half-wave current flows into the electric lamp once again. A thermistor 9 between the gate and the cathode of the SCR alleviates variations of the trigger current of the SCR, and a capacity 13 prevents an ignition error due to an external noise. According to such a constitution, the SCR is made and broken by a stable period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9267380A JPS5718121A (en) | 1980-07-09 | 1980-07-09 | Astable semiconductor switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9267380A JPS5718121A (en) | 1980-07-09 | 1980-07-09 | Astable semiconductor switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5718121A true JPS5718121A (en) | 1982-01-29 |
Family
ID=14060995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9267380A Pending JPS5718121A (en) | 1980-07-09 | 1980-07-09 | Astable semiconductor switch device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5718121A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62147365A (en) * | 1985-12-21 | 1987-07-01 | Nireko:Kk | Linearizer for temperature measurement |
-
1980
- 1980-07-09 JP JP9267380A patent/JPS5718121A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62147365A (en) * | 1985-12-21 | 1987-07-01 | Nireko:Kk | Linearizer for temperature measurement |
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