Aircraft wing light

Claim 1

A WING LIGHT FOR AIRCRAFT HAVING A SOURCE OF DIRECT CURRENT AND A SOURCE OF ALTERNATING CURRENT AND IN COMBINATION, A DIRECT CURRENT COMPACT ARC LAMP HAVING A STARTING ELECTRODE AND A PAIR OF OPERATING ELECTRODES, SAID SOURCE OF DIRECT CURRENT HAVING A POSITIVE TERMINAL AND A NEGATIVE TERMINAL CONNECTED RESPECTIVELY TO THE OPERATING ELECTRODES OF THE LAMP, A STEP-UP TRANSFORMER HAVING A PRIMARY COIL AND A SECONDARY COIL, SAID PRIMARY COIL BEING CONNECTED IN A CIRCUIT ACROSS THE SOURCE OF ALTERNATING CURRENT, A SWITCH CONNECTED TO OPEN AND CLOSE THE CIRCUIT THROUGH THE PRIMARY COIL, SAID SECONDARY COIL BEINF CON NECTED BETWEEN THE STARTING ELECTRODE AND ONE OPERATING ELECTRODE OF THE LAMP, CIRCUIT MEANS CONNECTED TO APPLY DIRECT CURRENT ACROSS SAID OPERATING ELECTRODES WHEN SAID SWITCH IS CLOSED, RESISTANCE MEANS CONNECTED TO APPLY DIRECT CURRENT ACROSS SAID OPERATING ELECTRODES WHEN SAID SWITCH IS CLOSED, RESISTANCE MEANS CONNECTED TO BLOCK EXCESSIVE CURRENT THROUGH THE TRANSFORMER DURING LAMP IGNITION, SAID CIRCUIT MEANS COMPRISING A SECOND SECONDARY COIL ASSOCIATED WITH THE TRANSFORMER, SAID SECOND SECONDARY COIL BEING CONNECTED ACROSS THE OPERATING ELECTRODES OF THE LAMP WITH A DIODE IN SERIES BETWEEN ONE OF THE OPERATING ELECTRODES AND ONE END OF SAID SECOND SECONDARY COIL.