ES462761A1 - Alarm unit - Google Patents
Alarm unitInfo
- Publication number
- ES462761A1 ES462761A1 ES462761A ES462761A ES462761A1 ES 462761 A1 ES462761 A1 ES 462761A1 ES 462761 A ES462761 A ES 462761A ES 462761 A ES462761 A ES 462761A ES 462761 A1 ES462761 A1 ES 462761A1
- Authority
- ES
- Spain
- Prior art keywords
- switch
- alarm
- circuit
- battery
- intrusion detection
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
- Alarm Systems (AREA)
Abstract
Improvements in alarm blocks, consisting of a supply circuit comprising a transformer connected to the network and a rectifier in the terminals of a battery; by at least one intrusion detection circuit comprising at least one contact or switch, the intrusion of which changes the state; first means constituted by at least one alarm trigger circuit and driven by the change of state of the contact or switch that excite a second means that govern the putting in and out of service of an alarm circuit comprising an alarm device, the second means comprising a first switch and a first timing device, the first switch assembling the first timing device, characterized in that the alarm trip circuit comprises a resistor in series with another resistor of a first intrusion detection circuit, the resistors forming a half-bridge in the battery terminals, the middle point of the resistors connecting to a middle point of the battery, the resistance of the first intrusion detection circuit being associated with at least one of the contacts or switches, and transistors from which an imbalance of the semi-bridge makes one of them pass through which in turn it passes through the first switch. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7629243A FR2366650A1 (en) | 1976-09-29 | 1976-09-29 | ALARM BLOCK |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES462761A1 true ES462761A1 (en) | 1978-05-16 |
Family
ID=9178202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES462761A Expired ES462761A1 (en) | 1976-09-29 | 1977-09-29 | Alarm unit |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA1092677A (en) |
| DE (1) | DE2742728A1 (en) |
| ES (1) | ES462761A1 (en) |
| FR (1) | FR2366650A1 (en) |
| GB (1) | GB1553040A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0015656B1 (en) * | 1979-02-09 | 1983-12-14 | Philip Charles Sefton | Improvements relating to security equipment |
-
1976
- 1976-09-29 FR FR7629243A patent/FR2366650A1/en active Granted
-
1977
- 1977-09-12 GB GB3793977A patent/GB1553040A/en not_active Expired
- 1977-09-22 DE DE19772742728 patent/DE2742728A1/en not_active Withdrawn
- 1977-09-27 CA CA287,592A patent/CA1092677A/en not_active Expired
- 1977-09-29 ES ES462761A patent/ES462761A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA1092677A (en) | 1980-12-30 |
| GB1553040A (en) | 1979-09-19 |
| FR2366650A1 (en) | 1978-04-28 |
| DE2742728A1 (en) | 1978-03-30 |
| FR2366650B1 (en) | 1982-04-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19990503 |