GB1328025A - Method and apparatus for discharging insulating materials - Google Patents
Method and apparatus for discharging insulating materialsInfo
- Publication number
- GB1328025A GB1328025A GB4441671A GB4441671A GB1328025A GB 1328025 A GB1328025 A GB 1328025A GB 4441671 A GB4441671 A GB 4441671A GB 4441671 A GB4441671 A GB 4441671A GB 1328025 A GB1328025 A GB 1328025A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ambient medium
- transformer
- film
- ionize
- sept
- 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
- 238000007599 discharging Methods 0.000 title abstract 3
- 239000011810 insulating material Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 150000002500 ions Chemical class 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 2
- 229920000298 Cellophane Polymers 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 238000013508 migration Methods 0.000 abstract 1
- 230000005012 migration Effects 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 230000001960 triggered effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/04—Carrying-off electrostatic charges by means of spark gaps or other discharge devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Elimination Of Static Electricity (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
1328025 Discharging static electricity LA CELLOPHANE 23 Sept 1971 [24 Sept 1970 18 June 1971] 44416/71 Heading H1X A method of discharging insulating material in an ambient medium comprises producing positive and negative ions in the vicinity of the insulating material by corona discharge from an electrode E1, E2 supplied with a first alternating waveform of steep energy gradient whose amplitude is high enough to ionize the ambient medium, followed by a second damped alternating waveform whose amplitude is insufficient to ionize the ambient medium. The second waveform prevents the ions from recombining but does not prevent their migration to the material to be discharged. The ambient medium may be air or nitrogen. Apparatus for carrying out the method comprises a thyristor bridge Th 1 , Th 2 supplied with D.C. by an auto-transformer A and full-wave rectifier P and triggered by a multi-vibrator V. The bridge is connected through an RC circuit to the primary winding of a transformer B the secondary winding of which is connected to two wires E1 and E2 connected in parallel in an earthed casing M adjacent the material to be discharged, e.g. a moving plastics film. Corona wires may be located on both sides of the film. The auto-transformer A provides a means of controlling the rate of charge removal for a given film velocity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7034560A FR2106779A5 (en) | 1970-09-24 | 1970-09-24 | |
| FR7122161A FR2142242A6 (en) | 1970-09-24 | 1971-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1328025A true GB1328025A (en) | 1973-08-22 |
Family
ID=26215965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4441671A Expired GB1328025A (en) | 1970-09-24 | 1971-09-23 | Method and apparatus for discharging insulating materials |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US3716754A (en) |
| JP (1) | JPS5226439B1 (en) |
| AU (1) | AU462575B2 (en) |
| BE (1) | BE772930A (en) |
| CA (1) | CA935506A (en) |
| CH (1) | CH543217A (en) |
| DE (2) | DE2146796C3 (en) |
| ES (1) | ES395409A1 (en) |
| FR (2) | FR2106779A5 (en) |
| GB (1) | GB1328025A (en) |
| LU (1) | LU63951A1 (en) |
| NL (1) | NL7112970A (en) |
| SE (1) | SE392382B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2124434A (en) * | 1982-07-21 | 1984-02-15 | Simco Co Inc | Controlled emission static eliminator |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4186237A (en) * | 1975-03-17 | 1980-01-29 | Vereinigte Flugtechnische Werke-Fokker Gmbh | Multi-component protective covering for construction parts designed to protect against the effects of lightning |
| US4271451A (en) * | 1976-07-20 | 1981-06-02 | Hercules Incorporated | Method and apparatus for controlling static charges |
| JPS5349988A (en) * | 1976-10-18 | 1978-05-06 | Canon Inc | Electricity reduction method and its device |
| US4423461A (en) * | 1981-10-01 | 1983-12-27 | Enercon Industries Corporation | Power supply for corona discharge treatment system |
| US4486808A (en) * | 1982-12-03 | 1984-12-04 | Polaroid Corporation | Apparatus for controlling random charges on a moving web |
| JPH10149892A (en) * | 1996-11-20 | 1998-06-02 | Shinko:Kk | Power supply unit for de-electrification |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1589781A1 (en) * | 1967-04-06 | 1970-05-14 | Bayer Ag | Method and circuit arrangement for discharging electrostatically charged objects |
-
1970
- 1970-09-24 FR FR7034560A patent/FR2106779A5/fr not_active Expired
-
1971
- 1971-06-18 FR FR7122161A patent/FR2142242A6/fr not_active Expired
- 1971-09-10 US US00179339A patent/US3716754A/en not_active Expired - Lifetime
- 1971-09-15 SE SE7111697A patent/SE392382B/en unknown
- 1971-09-18 DE DE2146796A patent/DE2146796C3/en not_active Expired
- 1971-09-20 CH CH1372071A patent/CH543217A/en not_active IP Right Cessation
- 1971-09-21 NL NL7112970A patent/NL7112970A/xx unknown
- 1971-09-22 AU AU33782/71A patent/AU462575B2/en not_active Expired
- 1971-09-22 BE BE772930A patent/BE772930A/en unknown
- 1971-09-23 CA CA123515A patent/CA935506A/en not_active Expired
- 1971-09-23 JP JP7174587A patent/JPS5226439B1/ja active Pending
- 1971-09-23 LU LU63951D patent/LU63951A1/xx unknown
- 1971-09-23 GB GB4441671A patent/GB1328025A/en not_active Expired
- 1971-09-24 ES ES395409A patent/ES395409A1/en not_active Expired
-
1972
- 1972-06-07 DE DE2227678A patent/DE2227678C3/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2124434A (en) * | 1982-07-21 | 1984-02-15 | Simco Co Inc | Controlled emission static eliminator |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2227678A1 (en) | 1972-12-21 |
| NL7112970A (en) | 1972-03-28 |
| US3716754A (en) | 1973-02-13 |
| DE2146796A1 (en) | 1972-03-30 |
| FR2142242A6 (en) | 1973-01-26 |
| DE2227678C3 (en) | 1981-09-17 |
| FR2106779A5 (en) | 1972-05-05 |
| JPS5226439B1 (en) | 1977-07-14 |
| DE2146796B2 (en) | 1975-03-27 |
| CH543217A (en) | 1973-10-15 |
| BE772930A (en) | 1972-01-17 |
| AU3378271A (en) | 1973-03-29 |
| AU462575B2 (en) | 1975-06-26 |
| DE2146796C3 (en) | 1975-11-13 |
| ES395409A1 (en) | 1974-10-01 |
| SE392382B (en) | 1977-03-21 |
| CA935506A (en) | 1973-10-16 |
| LU63951A1 (en) | 1972-03-01 |
| DE2227678B2 (en) | 1981-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |