Improvements in identification devices close

THIS IS IDENTIFIED USING A READER 1 BADGES OF ELECTRONIC CODE 2 NOT CONTACT THEM BY SIMPLE INDUCTIVE COUPLING OF INDUCTORS 7, 8, POWER SUPPLY IS ASSURED OF BADGE FROM TENSION HIGH FREQUENCY F generated by the READER. E CODE OF BADGE, CONSISTS OF A SUCCESSOR TO BITS FOLLOWING A VERY LESS FREQUENCY F AF, IS USED FOR MODULATING B VOLTAGE INTERMEDIATE FREQUENCY BETWEEN F F F AND IS AND TENSION AND MODULATED T THAT ORDER AN ELECTRONIC SWITCH 23 OWN SHORT-CIRCUIT CIRCUIT RESONANT 8, 9 BADGE.