Alternating current powered delivery system
An air treatment device having a piezoelectric actuator powered by a transformer. The transformer has dual inputs comprising oppositely wound coils and input power signals 180 degrees out of phase. This arrangement provides a stronger drive signal to the actuator.
1. An electronic driving circuit coupled to an air treatment device for emitting an air treatment into a space, said driving circuit comprising:
an actuating element and a power source, said actuating element comprising a piezoelectric element, wherein said piezoelectric element comprises a round piezoelectric disc having a round hole concentrically disposed therethrough, said piezoelectric element being juxtaposable with the air treatment material;
a step up transformer, said transformer having a dual input with clockwise and counter-clockwise windings and a common center tap in electrical communication with a power supply;
two input signals provided to the transformer 180 degrees out of phase with each other, and wherein said transformer provides an AC signal to said piezoelectric element; and
an inductor connected to the transformer and disposed intermediate said transformer and said piezoelectric element;
wherein said inductor uses the AC signal generated by the transformer to drive the piezoelectric element with a substantially pure sinusoidal waveform, and wherein the inductor and the piezoelectric element comprises a LC circuit having a resonant frequency and being operable at a frequency generally equivalent said resonant frequency, thereby causing movement of said piezoelectric element relative to the air treatment material.
2. An electronic driving circuit according to claim 1 , wherein said air treatment device is an air freshening system.
3. An electronic driving circuit according to claim 2 wherein said air freshening system comprises a liquid active material, said liquid active material is selected from the group consisting of perfumes, fragrances, insecticides, and mixtures thereof.
4. An electronic driving circuit according to claim 3 further comprising at least one passive component selected from the group consisting of a transistor, inductor, diode, capacitor, resistor, or combinations thereof.
5. An air treatment device for emitting an air treatment into a space, said device comprising:
an actuating element and a power source,
said actuating element comprising a piezoelectric element having a concentrically disposed hole therethrough, said piezoelectric element each having a resonant frequency, said piezoelectric element being juxtaposable with a fluid air treatment material, whereby movement of said piezoelectric element relative to the material causes the material to be expelled from said device;
said power source comprising a transformer having two input coils, a first input coil with clockwise windings and a second input coil with counter-clockwise-windings, said input coils being joined at a common tap electrically connected to a power supply, and an output, wherein said transformer provides a sinusoidal AC signal from said output to said piezoelectric element, said signal having a frequency generally equivalent to said resonant frequency of said piezoelectric element or said driver, thereby causing movement of said piezoelectric element relative to the material.