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
  • B23K9/0678—Ionization of the arc gap by means of an auxiliary arc
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
  • H03J3/00—Continuous tuning
  • H03J3/02—Details
  • H03J3/12—Electrically-operated arrangements for indicating correct tuning

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Plasma & Fusion (AREA)
• Mechanical Engineering (AREA)
• Transmitters (AREA)
• Selective Calling Equipment (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=21936173

Family Applications (1)

Country Status (5)

• 0
  • BE BE451345D patent/BE451345A/xx unknown
  • NL NL43698D patent/NL43698C/xx active
• 1934
  • 1934-11-23 FR FR781707D patent/FR781707A/fr not_active Expired
  • 1934-11-28 DE DE1934R0091998 patent/DE701720C/de not_active Expired
  • 1934-12-03 GB GB34747/34A patent/GB451345A/en not_active Expired

Also Published As

Similar Documents