triacn.

/ˈtrʌɪak/

Etymology: < tri- (in triode adj. and n.) + a.c. n. at A n. Initialisms.

Electronics.

A three-electrode semiconductor device that will conduct in either direction when triggered by a positive or negative signal at the gate electrode.

ΘΚΠ

the world > matter > physics > solid state physics > semiconductivity > semiconductor diode > [noun] > semiconductor triode

triode valve1948

triac1964

1964 E. K. Howell in IEEE Internat. Convention Record XII. ix. 86/2 To simplify the control of AC power, a completely new silicon semiconductor has been developed. ‘Triac’ is a generic term coined for this triode AC switch.

1975 Hi-Fi Answers Feb. 78/2 The light pulses from the led are picked up by a photo-conductive cell, and applied to the..triggering circuit of the triac.

1981 Computer-Aided Design Jan. 7/1 During the past two decades the application of triacs and thyristors in the control of power and machines with complex feedback arrangements has rapidly replaced the use of their conventional counterparts in almost all sectors of industry and public services.

This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2021).

单词	triac
释义	triacn. /ˈtrʌɪak/ Etymology: < tri- (in triode adj. and n.) + a.c. n. at A n. Initialisms. Electronics. A three-electrode semiconductor device that will conduct in either direction when triggered by a positive or negative signal at the gate electrode. ΘΚΠ the world > matter > physics > solid state physics > semiconductivity > semiconductor diode > [noun] > semiconductor triode triode valve1948 triac1964 1964 E. K. Howell in IEEE Internat. Convention Record XII. ix. 86/2 To simplify the control of AC power, a completely new silicon semiconductor has been developed. ‘Triac’ is a generic term coined for this triode AC switch. 1975 Hi-Fi Answers Feb. 78/2 The light pulses from the led are picked up by a photo-conductive cell, and applied to the..triggering circuit of the triac. 1981 Computer-Aided Design Jan. 7/1 During the past two decades the application of triacs and thyristors in the control of power and machines with complex feedback arrangements has rapidly replaced the use of their conventional counterparts in almost all sectors of industry and public services. This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2021). < n.1964
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