Timeline for What is the holding current on a triac?
Current License: CC BY-SA 3.0
5 events
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Nov 15, 2012 at 4:59 | vote | accept | Brian Low | ||
Nov 12, 2012 at 20:40 | comment | added | Olin Lathrop | @Brian: Yes, with AC the triac turns off twice per cycle. The minimum holding current applies to the main conduction path, not the gate. If you keep the gate activated, then the triac will basically be on all the time. Note that a triac has a on state voltage a little under a volt at low load, and a bit higher usually at full rated load. | |
Nov 12, 2012 at 19:21 | comment | added | Brian Low | Also if we put the minimum Holding Current (50 mA) through the gate (which we shouldn't because that is the absolute max allowed) would the triac (or SRC) turn even if the load is small? | |
Nov 12, 2012 at 19:15 | comment | added | Brian Low | So in a triac that is switching AC, the current will fall below this minimum current twice every cycle. At which point we have the option of turning the trial on or off by closing or opening the gate? | |
Nov 12, 2012 at 14:11 | history | answered | Olin Lathrop | CC BY-SA 3.0 |