(mc33261 / mc34261) power factor controllers.
consisting of input undervoltage lockout with hysteresis, cycle
–by
–cycle current limiting, and a latch for single pulse metering. These de.
These integrated circuits feature an internal startup timer, a one quadrant multiplier for near unity power factor, zer.
Introduction
Most electronic ballasts and switching power supplies use a bridge rectifier and a filter capacitor to derive raw dc voltage from the utility ac line. This simple rectifying circuit draws power from the line when the instantaneous ac vol.
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