JPS4912548B1 - - Google Patents
Info
- Publication number
- JPS4912548B1 JPS4912548B1 JP5742668A JP5742668A JPS4912548B1 JP S4912548 B1 JPS4912548 B1 JP S4912548B1 JP 5742668 A JP5742668 A JP 5742668A JP 5742668 A JP5742668 A JP 5742668A JP S4912548 B1 JPS4912548 B1 JP S4912548B1
- Authority
- JP
- Japan
- 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
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
- H03K17/795—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors
Landscapes
- Electronic Switches (AREA)
- Amplifiers (AREA)
- Burglar Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71757768A | 1968-04-01 | 1968-04-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4912548B1 true JPS4912548B1 (ja) | 1974-03-26 |
Family
ID=24882596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5742668A Pending JPS4912548B1 (ja) | 1968-04-01 | 1968-08-14 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3536923A (ja) |
| JP (1) | JPS4912548B1 (ja) |
| BE (1) | BE719949A (ja) |
| DE (1) | DE1800444B2 (ja) |
| GB (1) | GB1191558A (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6069479A (ja) * | 1984-07-27 | 1985-04-20 | マツハシ冷熱工業株式会社 | 差圧通風冷却装置および差圧通風冷却装置における収容ケ−スの遮蔽方法 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3708652A (en) * | 1969-11-08 | 1973-01-02 | Usm Corp | Temperature controls |
| US3664247A (en) * | 1970-07-06 | 1972-05-23 | Continental Instr Corp | Surveillance camera with circuit for automatic activation |
| DE2629476B2 (de) * | 1976-06-30 | 1979-02-15 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | Sich selbst auf Verschmutzungen überwachende Lichtschrankenanordnung |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3235857A (en) * | 1960-09-14 | 1966-02-15 | Specialties Dev Corp | Condition responsive system having means responsive to a negative or positive rate of change of a detected signal |
-
1968
- 1968-04-01 US US3536923D patent/US3536923A/en not_active Expired - Lifetime
- 1968-07-03 GB GB3173268A patent/GB1191558A/en not_active Expired
- 1968-08-14 JP JP5742668A patent/JPS4912548B1/ja active Pending
- 1968-08-26 BE BE719949D patent/BE719949A/xx unknown
- 1968-10-02 DE DE19681800444 patent/DE1800444B2/de active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6069479A (ja) * | 1984-07-27 | 1985-04-20 | マツハシ冷熱工業株式会社 | 差圧通風冷却装置および差圧通風冷却装置における収容ケ−スの遮蔽方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| BE719949A (ja) | 1969-02-03 |
| DE1800444B2 (de) | 1971-04-15 |
| GB1191558A (en) | 1970-05-13 |
| DE1800444A1 (de) | 1970-01-08 |
| US3536923A (en) | 1970-10-27 |