Electric lamp and discharge devices: systems – Condenser in the supply circuit – Condenser in shunt to the load device and the supply
Patent
1974-07-29
1978-02-14
Dahl, Lawrence J.
Electric lamp and discharge devices: systems
Condenser in the supply circuit
Condenser in shunt to the load device and the supply
315151, 315159, H05B 3700
Patent
active
040741710
ABSTRACT:
The invention relates to an electronic flash device which is provided with a series arrangement of an electronic flash tube and a thyristor, which flash device is equipped with a flash duration limiter (computer electronic flash device).
According to the invention a rectifier is connected anti-parallel to the thyristor. As a result a smaller thyristor can be used, while the energy consumption can be reduced and an unwanted "light spike" at the end of the flash duration can be avoided.
REFERENCES:
patent: RE28025 (1974-05-01), Murata et al.
patent: 3332074 (1967-07-01), Arnold
patent: 3740610 (1973-06-01), Roncke
patent: 3814985 (1974-06-01), Pecher et al.
patent: 3849703 (1974-11-01), Shimamura et al.
patent: 3953783 (1976-04-01), Peters, Jr.
"Capacitor Turn-Off Circuits" -- SCR Manual, Second Edition (General Electric), pp. 73-75, 1961.
Woodworth Frederick A.
Zobel Ernst-Guenther
Dahl Lawrence J.
Franzblau Bernard
Trifari Frank R.
U.S. Philips Corporation
LandOfFree
Electronic flash device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electronic flash device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic flash device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-526796