Neon lamp isolation transformer for mid-point commoned neon lamp

Details Neon lamp isolation transformer for mid-point commoned neon lamp Neon lamp isolation transformer for mid-point commoned neon lamp

1996-11-19

1998-10-06

Lee, Benny T.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Transformer in the supply circuit

315278, 315324, 315257, 361 42, 361 35, 361 38, H05B 4116

Patent

active

058181814

ABSTRACT:
A low cost power supply with enhanced safety protection for neon lamps connected in a midpoint commoned lamp configuration. The power supply has a return path which is isolated from the earth ground so that a fault current does not flow from the output terminals to the earth ground. The windings are phased in a series opposing configuration such that the voltages between the output terminals sum to zero. This power supply of mid-point connected secondary coil design is capable of operating lamp lengths that typically require 15,000 volts of open circuit voltage while not exceeding 7500 volts to ground when any one output terminal is grounded.

REFERENCES:
patent: 1786422 (1930-12-01), Daley
patent: 3666993 (1972-05-01), Legatti
patent: 4507698 (1985-03-01), Nilssen
patent: 4510476 (1985-04-01), Clatterbuck
patent: 4734828 (1988-03-01), Vargo
patent: 5090048 (1992-02-01), Blake
patent: 5241443 (1993-08-01), Efantis

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