using Moc 3063 and Triac BT139 for DC Switches ???

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Hi guys ,
Can I use triac BT139 and moc 3063 for switching DC power supply ??? and if the Snubber circuit has been used , does it make a problem for Dc loads ???
 

A triac or SCR can't switch DC loads, because it only turns off if the current falls below holding threshold before. The same with MOC30xx opto triacs. In addition, MOC3063 will neither turn on due to zero crossing logic.

Pulsating DC (unfiltered rectified AC) with resistive or capacitive load can however work.
 

but when I use DC for Moc3063 and triac it works and turned it off or on :shock:
 

Hi,

Then show us your schematic...

Klaus
 

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