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...http://www.google.fr/patents/US20060087421?utm_source=gb-gplus-shareBrevet US20060087421 - Building alarm system with synchronized strobes
