Fast repetition rate (FRR) flasher
Abstract
A fast repetition rate (FRR) flasher suitable for high flash photolysis including kinetic chemical and biological analysis. The flasher includes a power supply, a discharge capacitor operably connected to be charged by the power supply, and a flash lamp for producing a series of flashes in response to discharge of the discharge capacitor. A triggering circuit operably connected to the flash lamp initially ionizes the flash lamp. A current switch is operably connected between the flash lamp and the discharge capacitor. The current switch has at least one insulated gate bipolar transistor for switching current that is operable to initiate a controllable discharge of the discharge capacitor through the flash lamp. Control means connected to the current switch for controlling the rate of discharge of the discharge capacitor thereby to effectively keep the flash lamp in an ionized state between Successive discharges of the discharge capacitor. Advantageously, the control means is operable to discharge the discharge capacitor at a rate greater than 10,000 Hz and even up to a rate greater than about 250,000 Hz.
- Inventors:
-
- Shoreham, NY
- Stony Brook, NY
- Issue Date:
- Research Org.:
- Associated Universities, Inc., Upton, NY (United States)
- OSTI Identifier:
- 870827
- Patent Number(s):
- 5602446
- Application Number:
- 08/409,060
- Assignee:
- Associated Universities, Inc. (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- AC02-76CH00016
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- fast; repetition; rate; frr; flasher; suitable; flash; photolysis; including; kinetic; chemical; biological; analysis; power; supply; discharge; capacitor; operably; connected; charged; lamp; producing; series; flashes; response; triggering; circuit; initially; ionizes; current; switch; insulated; gate; bipolar; transistor; switching; operable; initiate; controllable; control; means; controlling; effectively; ionized; successive; discharges; advantageously; 10; 000; hz; 250; fast repetition; repetition rate; power supply; control means; operably connected; flash lamp; discharge capacitor; means connected; current switch; bipolar transistor; triggering circuit; /315/
Citation Formats
Kolber, Zbigniew, and Falkowski, Paul. Fast repetition rate (FRR) flasher. United States: N. p., 1997.
Web.
Kolber, Zbigniew, & Falkowski, Paul. Fast repetition rate (FRR) flasher. United States.
Kolber, Zbigniew, and Falkowski, Paul. Tue .
"Fast repetition rate (FRR) flasher". United States. https://www.osti.gov/servlets/purl/870827.
@article{osti_870827,
title = {Fast repetition rate (FRR) flasher},
author = {Kolber, Zbigniew and Falkowski, Paul},
abstractNote = {A fast repetition rate (FRR) flasher suitable for high flash photolysis including kinetic chemical and biological analysis. The flasher includes a power supply, a discharge capacitor operably connected to be charged by the power supply, and a flash lamp for producing a series of flashes in response to discharge of the discharge capacitor. A triggering circuit operably connected to the flash lamp initially ionizes the flash lamp. A current switch is operably connected between the flash lamp and the discharge capacitor. The current switch has at least one insulated gate bipolar transistor for switching current that is operable to initiate a controllable discharge of the discharge capacitor through the flash lamp. Control means connected to the current switch for controlling the rate of discharge of the discharge capacitor thereby to effectively keep the flash lamp in an ionized state between Successive discharges of the discharge capacitor. Advantageously, the control means is operable to discharge the discharge capacitor at a rate greater than 10,000 Hz and even up to a rate greater than about 250,000 Hz.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 11 00:00:00 EST 1997},
month = {Tue Feb 11 00:00:00 EST 1997}
}