SCRs are unidirectional (one-way) current devices, making them useful for controlling DC only. If two SCRs are joined in back-to-back parallel fashion just like two Shockley diodes were joined together to form a DIAC, we have a new device known as the TRIAC: (Figure below)
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Because individual SCRs are more...
The TRIAC
![[IMG]](http://www.electronicspoint.com/tutorialimages/Semi/03223.png)
The TRIAC SCR equivalent and, TRIAC schematic symbol
Because individual SCRs are more...
The TRIAC