GB963788A - Device for firing explosives - Google Patents
Device for firing explosivesInfo
- Publication number
- GB963788A GB963788A GB4845862A GB4845862A GB963788A GB 963788 A GB963788 A GB 963788A GB 4845862 A GB4845862 A GB 4845862A GB 4845862 A GB4845862 A GB 4845862A GB 963788 A GB963788 A GB 963788A
- Authority
- GB
- United Kingdom
- Prior art keywords
- detonators
- potential
- source
- switch
- dec
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C11/00—Electric fuzes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/04—Arrangements for ignition
- F42D1/045—Arrangements for electric ignition
- F42D1/05—Electric circuits for blasting
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
Abstract
963,788. Control apparatus for electric detonators. D'EXPLOSIFS ET DE PRODUITS CHIMIQUESS .A. and R. VULPILLAT. Dec. 21, 1962 [Dec. 22, 1961], No. 48458/62. Heading H2H. Apparatus for exploding a number of seriesconnected detonators 2 comprises a source of energy 1 to which the detonators are connected by way of a diode 8 and a gas-filled electronic switch 7, the source of energy 1 being of the kind in which the potential increases gradually from a minimum to a maximum value at a given point in which range a cold cathode gasfilled triode 11 becomes conductive whereupon the potential of a terminal 12 suddenly changes from an initial negative potential 13 to a positive potential, the pulse being transmitted by a condenser 15 to the anode of the switch 7 causing it to conduct to explode the detonators 2. The change of potential at the terminal 12 also causes a diode 19 to fire, after a time interval determined by the resistor-condenser network 16, 18, so that a pulse is applied to the firing electrode of a silicon controlled rectifier 21 which then becomes conductive to short-circuit the supply 1 at terminals 5d, 6c whereupon the voltage of the source diminishes and the switch 7 becomes non-conductive. In other embodiments the terminals 5d, 5e, 12, 20 are connected into the circuit by way of additional resistors, condensers and diodes to ensure short-circuiting of the source 1 should any element of the system become unserviceable thus preventing damage due to undesired explosions of the detonators 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR882809A FR1318658A (en) | 1961-12-22 | 1961-12-22 | Advanced explosives firing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB963788A true GB963788A (en) | 1964-07-15 |
Family
ID=8769264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4845862A Expired GB963788A (en) | 1961-12-22 | 1962-12-21 | Device for firing explosives |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1318658A (en) |
| GB (1) | GB963788A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739653A (en) * | 2021-09-17 | 2021-12-03 | 无锡盛景微电子股份有限公司 | Control circuit and equipment suitable for integrated circuit's transducer |
-
1961
- 1961-12-22 FR FR882809A patent/FR1318658A/en not_active Expired
-
1962
- 1962-12-21 GB GB4845862A patent/GB963788A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739653A (en) * | 2021-09-17 | 2021-12-03 | 无锡盛景微电子股份有限公司 | Control circuit and equipment suitable for integrated circuit's transducer |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1318658A (en) | 1963-02-22 |
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