A TRIAC (triode for alternating current; also bidirectional triode thyristor or bilateral triode thyristor) is a three-terminal electronic component that...

rectifier (SCR) or a triac. Since LEDs can sense light in addition to emitting it, construction of symmetrical, bidirectional opto-isolators is possible...

problem, so that the TRIAC functions as well as possible. This is typically done with thyristors in two of the three phases. Many opto-TRIACs come with zero-cross...

electromechanical relay can, and have a higher "on" resistance. In AC circuits, SCR or triac relays inherently switch off at the points of AC zero cross when there is...

transistor F=RF transistor (or FET) P=Photosensitive transistor etc. T=Triac or thyristor Y=Rectifier diode Z=Zener diode Poland, Hungary, Romania, and...

analog array (FPAA) Opto-electronics Opto-isolator, opto-coupler, photo-coupler – photodiode, BJT, JFET, SCR, TRIAC, zero-crossing TRIAC, open collector IC...

semiconductor device to perform switching—often a silicon-controlled rectifier or triac). Early telephone systems used an electromagnetically operated Strowger...

company Rectifier Transistor Thyristor or silicon controlled rectifier (SCR) TRIAC DIAC Varistor In optics, an equivalent device for the diode but with laser...

HP-LEDs in this category are the Nichia 19 series, Lumileds Rebel Led, Osram Opto Semiconductors Golden Dragon, and Cree X-lamp. As of September 2009, some...

(SCR) Diac (may be a varistor in older schematics) Constant-current diode Opto-isolator: LED (left), photo transistor (right) There are many ways to draw...