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SL441C
ADVANCE INFORMATION
DS3848 -1.0
SL441C
ZERO VOLTAGE SWITCH
The SL441C is a symmetrical burst control integrated circuit in an 8 pin DIL package. When used with a triac, AC power may be regulated by varying the number of mains cycles applied to the load in a fixed timing period. The device is especially suited to room temperature control applications including panel heaters, fan heaters etc. Zero Voltage Switching has the advantage of minimising radio frequency interference.
FEATURES s Balanced zero voltage point crossing detector, spike filter and pulse generator for reliable triggering of the triac. s A period pulse generator and bistable which are arranged to provide symmetrical burst control and eliminate 1 / 2 wave firing. (EN50.