US 12,302,486 B2
Asymmetrical ballast transformer
Peter J. Yancey, Cary, NC (US); and Terrence E. Rogers, Durham, NC (US)
Assigned to Atmospheric Plasma Solutions, Inc., Cary, NC (US)
Filed by Atmospheric Plasma Solutions, Inc., Cary, NC (US)
Filed on Jul. 2, 2023, as Appl. No. 18/217,574.
Application 18/217,574 is a continuation of application No. 17/318,852, filed on May 12, 2021, granted, now 11,706,866.
Application 17/318,852 is a continuation of application No. 17/085,604, filed on Oct. 30, 2020, granted, now 11,019,713, issued on May 25, 2021.
Application 17/085,604 is a continuation of application No. PCT/US2020/028373, filed on Apr. 15, 2020.
Claims priority of provisional application 62/834,545, filed on Apr. 16, 2019.
Claims priority of provisional application 62/834,947, filed on Apr. 16, 2019.
Claims priority of provisional application 62/834,119, filed on Apr. 15, 2019.
Prior Publication US 2023/0354500 A1, Nov. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01F 27/24 (2006.01); H01F 27/28 (2006.01); H01F 27/32 (2006.01); H01F 38/10 (2006.01); H05B 41/16 (2006.01); H05H 1/30 (2006.01)
CPC H05H 1/30 (2013.01) [H01F 27/24 (2013.01); H01F 27/2876 (2013.01); H01F 27/325 (2013.01); H01F 38/10 (2013.01); H05B 41/16 (2013.01); H05H 2242/26 (2021.05)] 20 Claims
OG exemplary drawing
 
1. A system for coupling power to a plasma load, comprising:
an alternating current (AC) power source;
a ballast transformer having
a magnetic core,
a first primary winding on a primary side of the magnetic core and connected to the AC power source,
a secondary winding on a secondary side of the magnetic core, and
a second primary winding connected in series with the first primary winding and wound coaxial to the secondary winding on the secondary side of the magnetic core; and
a coaxial cable for connecting the secondary winding to the plasma load.