Oscillatory circuit for ultrasonic cleaning apparatus
阅读：994发布：2022-07-14
专利汇可以提供Oscillatory circuit for ultrasonic cleaning apparatus专利检索，专利查询，专利分析的服务。并且A high-efficient oscillatory circuit drives a piezoelectric crystal (transducer) which is coupled to an ultrasonic cleaning tank. The circuit includes a transistor switching means in the driver side of the oscillator. The primary winding of the transformer is coupled in parallel with a capacitor and forms a circuit having a resonant frequency which is a multiple even integer of the resonant frequency of the crystal which is coupled to the transformer secondary winding.，下面是Oscillatory circuit for ultrasonic cleaning apparatus专利的具体信息内容。
1. An oscillatory circuit for an ultrasonic cleaning apparatus comprising: a transformer having a primary winding and a secondary winding; a capacitance coupled in parallel with said primary winding; a source of direct current and a switching means coupled serially in circuit with said primary winding and parallelcoupled capacitance for cyclically providing current flow from said source through said winding; said secondary winding coupled in parallel with an inductance and a piezoelectric element, the latter forming a part of said cleaning apparatus; a further winding serving as a feedback means disposed on said transformer coupled to said switching means to cause said cyclic current flow, and the combination of said primary winding and capacitance forming a resonant circuit having a resonant frequency which is an even integer multiple of the frequency of the oscillatory circuit comprising said secondary winding, said inductance and piezoelectric element.
2. An oscillatory circuit as set forth in claim 1, said primary winding and capacitance in combination having a resonant frequency which is four times higher than the resonant frequency determined by the oscillatory circuit comprising said secondary winding, said inductance and piezoelectric element.
3. An oscillatory circuit as set forth in claim 1, the combination of said secondary winding, said inductance and piezoelectric element being resonant at a frequency of at least 20 kHz.
4. An oscillatory circuit as set forth in claim 1, said switching means being a transistor.
5. An oscillatory circuit as set forth in claim 1, said piezoelectric element being a disk-type element coupled to an exterior surface of an ultrasonic cleaning tank.
6. An oscillatory circuit as set forth in claim 1, said primary, secondary and further windings being disposed on a toroidal transformer core.
7. An oscillatory circuit for an ultrasonic cleaning apparatus, said circuit comprising: a driving portion which includes a source of direct current, a switching means, a first transformer winding, and a capacitance connected in parallel with said first winding so arranged that said switching means is adapted to cyclically provide current flow from said source through said winding; a load portion which includes a second transformer winding inductively coupled to said first winding, a piezoelectric transducer, and an inductance coupled to said second winding and to said transducer; and said driving portion being dimensioned to exhibit when said switching means inhibits current flow from said source to said first winding a fundamental resonant frequency which is an even integer multiple of the fundamental frequency of said transducer.
8. An oscillatory circuit for an ultrasonic cleaning apparatus coMprising: a transformer having a primary winding and a secondary winding; the series combination of a capacitance and an inductance coupled in parallel with said primary winding; a source of direct current and a switching means coupled serially in circuit with said primary winding and said parallel coupled series combination for cyclically providing current flow from said source through said winding; said secondary winding coupled in parallel with an inductance and a piezoelectric element, the latter forming a part of said cleaning apparatus; a further winding serving as a feedback means disposed on said transformer coupled to said switching means to cause said cyclic current flow, and the combination of said primary winding and series combination forming a resonant circuit having a resonant frequency which is an even integer multiple of the frequency of the oscillatory circuit comprising said secondary winding, said inductance and piezoelectric element.
9. An oscillatory circuit as set forth in claim 8, said primary winding and series combination coupled in parallel in combination having a resonant frequency which is four times higher than the resonant frequency determined by the oscillatory circuit comprising said secondary winding, said inductance and piezoelectric element.
10. An oscillatory circuit as set forth in claim 8, the combination of said secondary winding, said inductance and piezoelectric element being resonant at a frequency of at least 20 kHz.
11. An oscillatory circuit as set forth in claim 8, said switching means being a transistor.
12. An oscillatory circuit as set forth in claim 8, said piezoelectric element being a disk-type element coupled to an exterior surface of an ultrasonic cleaning tank.
13. An oscillatory circuit as set forth in claim 8, said primary, secondary and further windings being disposed on a toroidal transformer core.
14. An oscillatory circuit as set forth in claim 8, and a capacitance coupled in parallel with said piezoelectric element.
15. An oscillatory circuit for an ultrasonic cleaning apparatus comprising: a driving circuit portion; an output circuit portion which includes a transducer having a predetermined resonant frequency; means coupling said portions to each other, and said driving circuit portion having a combination of circuit elements adapted to be resonant at a frequency which is an even integer multiple of said predetermined resonant frequency.
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