Symbols of Thyristors, Triacs and Diacs
The Thyristors are semiconductors of four caps that are activated by application of an impulse and are deactivated on not having supplied the current of work. They handle big powers. They are recognized by the English initials SCR.
The triac and diac are bidirectional semiconductor devices.
Silicon Controlled Rectifier
Silicon Controlled Switch
|Thyristor Schottky PNPN 4 layer||Thyristor Schottky PNPN 4 layer|
|Thyristor Schottky PNPN 4 layer||Reverse conducting thyristor gate P channel controlled by cathode|
|Reverse conducting thyristor gate N channel controlled by anode||Turn-off thyristor gate P channel controlled by cathode|
|Turn-off thyristor gate N channel controlled by anode||Photo thyristor|
Silicon bilateral switch
Silicon unilateral switch
|Ditriac / Quadrac||Darlistor|