The design of this reader is truly unprecedented, as it allows the replacement of a common reactor in a fluorescent lighting system, with a two-voltage transformer, with any secondary voltage. The circuit is shown in the figure. The transformer has a primary winding of 110 V and 220 V, which is connected as an autotransformer, to obtain the high voltage necessary for the ionization of the lamp, thus eliminating the need for the reactor. The reader also uses the secondary of this same transformer to supply a small indicator lamp. The fluorescent lamp tested is 40 W and the circuit is only suitable for 110 V networks.
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