MICHAEL GARJIAN
Pilots at Fairfield Ave, Loudville, MA
License number
Massachusetts A0652999
Issued Date
Oct 2016
Expiration Date
Oct 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
7 Fairfield Ave, Loudville, MA 01027
Professional information
Gas Discharge Device Power Supply With Ground Fault Protection
US Patent:
5424893, Jun 13, 1995
Filed:
Mar 11, 1994
Appl. No.:
8/209814
Inventors:
Ralph M. Francis - Racine WI
Michael Garjian - Easthampton MA
Michael Garjian - Easthampton MA
International Classification:
H02H 316
US Classification:
361 45
Abstract:
A gas discharge device, such as a neon tube, is connected to a pair of output terminals of a power supply. The power supply has a transformer with a secondary winding that has first and second sub-windings. Each of the sub-winding is connected to a different output terminal and two conductors connect the first and second sub-windings to earth ground. A current sensor detects whether unequal magnitudes of current flow through in the two conductors. A resonant control circuit applies an excitation current to the primary winding of the transformer unless an imbalance of current flows. Thus excitation of the transformer is terminated when a high voltage ground fault occurs.