I am explaining about diac and triac in this article, what is Diac and Triac how it works? Below the image of Diac and full wave bidirectional semiconductor. That can be exchanged ON or turned ON both sides forward and switch short type of diode.
what is Diac and Triac how it works?
Diac generally utilising part as Alternative current triggering of Triac, at whatever point we require AC this is V I attributes of Diac. When we apply a voltage over this a little spillage current streams. The request of couple of smaller scale Amp. Each diac, has one break over voltage called BVO. In the case for DB3 writes it is 32 volt +/ - 4.
Break Over Voltage (BOV)
Volt for HT60 Diac, BOV is, break over voltage. The BOV is 56 to 70 volt, can be anything in the middle of and voltage over this surpass BOV esteem. That begins directing and the voltage drop will be over this. That is called delta-V,
It will stay ON as long as current flowing. this is more than holding the current, when current turns out to be, not as much as holding current, it winds up OFF. This act on the off chance that we apply positive, or negative both way it will trigger if voltage over this surpass BOV. However, there is a distinction, a symmetry issue implies, this voltage.
Peak current of Diac
This voltage VBO in addition to side and short side may not be equivalent. There might be the trigger of 3 volt one side it might trigger at 32-volt opposite side it might trigger at 29 volt, while planning the circuit. When we close the switch voltage over the diac, turns out to be more than BOV.
So it triggers and it moves toward becoming ON, or begin leading current stream. The gate current of Triac flowing in the Diac. The current has an ascent time for DB3 this is 2 microsecond, it is written as Triac. Triac is measured, from 10 % to 90 % of the peak current.
Triggering point
The current is flowing the capacitor will begin releasing. So current in Diac will stream for brief time, this time might be around 10 milliseconds when we utilize this Triac.
At 220V or 110 V AC Diac this switch won't be there, there will be a direct connection. It will trigger each cycle, this is triggering point. that time the short current streams in this, that appears here this is only this here scale is in smaller scale sec, here in milliseconds so in addition to and less, both side current will stream.
