Answer the following statement(s) true (T) or false (F)

1. The triac is a PNPN junction connected in series with an NPNP junction.
2. The triac has only two states of operation, on or off.
3. The triac is used as the input of many solid-state relays.
4. The triac can be used to control an AC voltage.
5. The triac, like the SCR, must be phase shifted if complete voltage control is to be obtained.


1. FALSE
2. TRUE
3. FALSE
4. TRUE
5. TRUE

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