latching current การใช้

• In datasheets, the latching current is indicated as I L, while the holding current is indicated as I H.
• Latching current is the minimum that can make up for the missing gate current in order to keep the device internal structure latched.
• When the gate current is discontinued, if the current between the two main terminals is more than what is called the "'latching current "', the device keeps conducting, otherwise the device might turn off.
• A related term is latching current, which is the minimum additional current that can make up for any missing input ( gate ) current in order to keep the device'ON', in other words to keep the device's internal structure latched.
• In particular, if the pulse width of the gate current is sufficiently large ( generally some tens of microseconds ), the TRIAC has completed the triggering process when the gate signal is discontinued and the latching current reaches a minimum level called "'holding current " '.