FR2133369A5 - Arc striking control circuit - for electric arc welders - Google Patents
Arc striking control circuit - for electric arc weldersInfo
- Publication number
- FR2133369A5 FR2133369A5 FR7114244A FR7114244A FR2133369A5 FR 2133369 A5 FR2133369 A5 FR 2133369A5 FR 7114244 A FR7114244 A FR 7114244A FR 7114244 A FR7114244 A FR 7114244A FR 2133369 A5 FR2133369 A5 FR 2133369A5
- Authority
- FR
- France
- Prior art keywords
- arc
- relay
- choke
- workpiece
- control circuit
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
- B23K9/067—Starting the arc
- B23K9/0672—Starting the arc without direct contact between electrodes
- B23K9/0673—Ionisation of the arc gap by means of a tension with a step front (pulses or high frequency tensions)
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
The main DC feed to the electrode and workpiece from the welding current generator unit is via. a r.f. choke, esp. of the ferrite tube parallel line type, and on the arc side of this choke a l.f. generator is connected via. blocking capacitors between the electrode and through a high pass circuit to earth and thus the workpiece. The h.f. generator is a spark gap across the high voltage secondary of a lossy iron circuit transformer whose primary circuit includes two relay contacts in series. One relay is normally open and closes when its operate coil is fed with the open circuit voltage from the DC rails, opening as soon as the arc strikes and that voltage falls. The other is a time delay relay.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7114244A FR2133369A5 (en) | 1971-04-15 | 1971-04-15 | Arc striking control circuit - for electric arc welders |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7114244A FR2133369A5 (en) | 1971-04-15 | 1971-04-15 | Arc striking control circuit - for electric arc welders |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2133369A5 true FR2133369A5 (en) | 1972-11-24 |
Family
ID=9075713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7114244A Expired FR2133369A5 (en) | 1971-04-15 | 1971-04-15 | Arc striking control circuit - for electric arc welders |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2133369A5 (en) |
-
1971
- 1971-04-15 FR FR7114244A patent/FR2133369A5/en not_active Expired
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |