Resonant power supply circuit for ozone generators

• US 5,474,750 A
• Filed: 01/25/1995
• Issued: 12/12/1995
• Est. Priority Date: 01/25/1995
• Status: Expired due to Fees

• Current Assignee: Quantum Zone, LLC
• Original Assignee: Quantum Electronics Limited
• Inventors: Racca, William, Racca, Edward F.
• Primary Examiner(s): Walsh, Donald P.
• Assistant Examiner(s): JENKINS, DANIEL J
• Application Number:
  US08/378,324
• Time in Patent Office: 321 Days
• Field of Search: 422/186.15, 422/186.07, 363/131
• US Class Current: 422/186.15
• CPC Class Codes: C01B 13/115 characterised by the electrical circuits producing the electrical discharge
• CPC Class Codes: G05F 3/22 wherein the transistors are of the bipolar type only G05F3/26, G05F3/30 take precedence

Abstract

An ozone generator is provided, with a resonant power circuit to energize the corona plates. The circuit includes a pair of transistors where the primary winding of the transformer acts as the collector load on each of the transistors. Additionally, two other transistors are provided for safety purposes to short the base signal of the power transistors if the power supply to the ozone generating plates gets too high. The circuit is resonant thereby requiring low power consumption. The resonant circuit takes full advantage of the characteristics of the transformer to quickly and efficiently energize the plates for the generation of corona for the purpose of creating ozone.

Claims

1. In an ozone generator a transformer having a pair of primary windings and a secondary winding coupled by a high reluctance core, the secondary winding being connected to a pair of plates capable of generating corona, a multivibrator coupled to the primary windings having a first switch that conducts through a first primary in one direction and a second switch that conducts through the other primary in the other direction, the secondary winding having a resonant network that is reflected in the primary winding whereby substantially a sine wave is generated.

2. In an ozone generator a resonant power supply circuit comprising:

a direct current source having a positive terminal and a negative terminal;

a transformer having a center tapped primary winding and a secondary winding;

a pair of high-power transistors;

said positive terminal being connected to the collectors of said high-power transistors through said center tap of the primary winding of the transformer;

a first pair of resistors;

bases of said high-power transistors being cross coupled through said first pair of resistors to collectors of said high-power transistors;

a pair of low-power transistors;

said low-power transistors coupling said first pair of resistors to ground through the collector-emitter junction of said low-power transistors, respectively; and

a pair of plates separated by a suitable dielectric capable of generating corona for the production of ozone connected across the secondary winding.

3. The circuit of claim 2, wherein said transformer has a ratio of primary winding to secondary winding of 1:

400.

4. The circuit of claim 2, wherein said first pair of resistors are each 3300 ohms.

5. The circuit of claim 2, wherein said second pair of resistors are each 0.82 ohms.

6. The circuit of claim 2, wherein said high-power transistors are each D44H11.

7. The circuit of claim 2, wherein said low-power transistors are each 2N3904.