SERIES SCR LAMP FLASHER
HANDLES A
OF LOADS
Schematic:
Notes:
Brief full-power flashes are
obtained when the SCR conducts during positive half cycles of the line voltage.
The SCR fires when the voltage at the divider, R3 and R4, reaches the
gate-firing level. Diode D1 conducts during the reverse cycle of the SCR and
provides preheating current to the lamp filaments.
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