Inductive coupler

An inductive coupler comprising:

• a rectifier having an input and an output, said rectifier comprising a means for rectifying an alternating current power supply applied to said input to produce a rectified power supply at said output;
• a high frequency oscillator, said high frequency oscillator having a power input and a high frequency signal output, said power input of said high frequency oscillator being operatively connected to an driven by, said output of said rectifier;
• a modulator, said modulator having an input and an output, said input of said modulator being operatively connected to said high frequency signal output of said high frequency oscillator, said modulator comprising a means for modulating said high frequency signal output from said high frequency oscillator with a lower frequency alternating signal;
• a split transformer means, said split transformer means having a primary and secondary section, said primary and secondary sections of said split transformer means comprising a means for rendering said sections physically separable, said output of said modulator being coupled to said primary section of said split transformer means;
• a demodulator, said demodulator having an input and an output, said input of said demodulator being operatively coupled to said secondary section of said split transformer means, said demodulator comprising a means for demodulating a high frequency signal applied to said demodulator input from said secondary section of said split transformer means and for producing at said demodulator output a low frequency alternating current power output;
• and,
• an auxiliary connector, said auxiliary connector having a first part operatively connected to a reference from said lower frequency alternating modulation signal imposed by said modulator and a second part operatively connected to said demodulator, said reference connected via said auxiliary connector comprising a means for ensuring that said demodulator maintains synchronism with said modulator in use of said inductive coupler.