Communications: electrical – Systems – Signal light systems
Patent
1996-07-17
1999-03-23
Swarthout, Brent A.
Communications: electrical
Systems
Signal light systems
315241S, 340331, G08B 500
Patent
active
058866205
ABSTRACT:
In a building fire alarm system, the light strobes of a network of strobes are synchronized to flash simultaneously. Each strobe has a charging circuit to charge a capacitor which discharges through a flash tube. Once a capacitor is charged, the charging circuit is disabled. A synchronization pulse is applied through common power lines to trigger discharge of each strobe capacitor through the flash tube followed by recharging of the capacitor.
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Drell, A., "Strobe Alarm Branded Danger to Epileptics," Metro, 1 p.
Stanley Lawrence G.
Stewart Albert J.
Simplex Time Recorder Company
Swarthout Brent A.
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