Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch in the primary circuit of the supply...
Patent
1985-05-16
1987-07-21
Moore, David K.
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Periodic switch in the primary circuit of the supply...
315206, 315208, 315209R, 315DIG5, 315DIG7, 313619, H05B 4114
Patent
active
046820825
ABSTRACT:
An electronic energization circuit is provided to illuminate a gas discharge lamp that includes a transformer with a substantially rectangular hysteresis loop. A secondary winding on the transformer is connected to energize the lamp and at least one primary winding is provided on the transformer. Input voltage terminals may be DC terminals to supply an input voltage to the circuit. At least one semiconductor, such as a transistor, is connected to the input terminals and to the at least one primary winding, and a control means is provided for the semiconductor for unequal on and off conduction periods of the semiconductor. These unequal periods provide the conditions which eliminate the striations (bubbles) or dark spots in the gas plasma of the lamp, usually associated with high frequency energization. When two semiconductors are used in a circuit, they conduct alternately in a type of square wave oscillator circuit and the duty cycle of the two transistors is different so that the striations in the illumination of the lamp are eliminated. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.
REFERENCES:
patent: 4042852 (1977-08-01), Zaderej et al.
patent: 4463286 (1984-07-01), Justice
patent: 4492899 (1985-01-01), Martin
patent: 4544863 (1985-10-01), Hashimoto
patent: 4581562 (1986-04-01), Nilssen
patent: 4587461 (1986-05-01), Hanlet
patent: 4588924 (1986-05-01), Luursema et al.
Braun Jeffrey J.
MacAskill Robert B.
Moore David K.
Razavi M.
The Scott & Fetzer Company
LandOfFree
Gas discharge lamp energization circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas discharge lamp energization circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas discharge lamp energization circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-209233