DIAC

Idealized breakover diode voltage and current relationships. Once the voltage exceeds the turn-on threshold, the device turns on and the voltage rapidly falls while the current increases.

The DIAC is a diode that conducts electrical current only after its breakover voltage, V_BO, has been reached momentarily. The term is an acronym of diode for alternating current.

When breakdown occurs, the diode enters a region of negative dynamic resistance, leading to a decrease in the voltage drop across the diode and, usually, a sharp increase in current through the diode. The diode remains in conduction until the current through it drops below a value characteristic for the device, called the holding current, I_H. Below this value, the diode switches back to its high-resistance, non-conducting state. This behavior is bidirectional, meaning typically the same for both directions of current.

词汇	diac
分类	英语词汇英语翻译词典
释义	diac /'daiək/ 英汉-汉英词典 n. 两端交流开关元件 DIAC abbr. Defense Industry Advisory Council <美>国防工业咨询委员会 DIAC abbr. Defense Industry Advisory Council 〈美〉国防工业咨询委员会词组 \| 习惯用语您要查找的是不是： dial n. 钟(表)面; 标度盘; 拨号盘 vt. & vi. 打电话, 拨电话号码 disc n. 圆盘，唱片（等于disk） vt. 灌唱片 zodiac n. [天]黄道带，十二宫图 cardiac adj. 心脏(病)的 dicky adj. 恶劣的；易碎的 n. 围嘴；衬衫的胸襟 diac n. 二端交联关元件；双向开关二极管网络短语: npn diac 双极管 diac volume 心容积 glycol diac 乙二醇二乙酸酯英语 car diac rhythm 心心律 c Hot diac output 心排出量 c Tight diac output 心排出量英语百科 DIAC The DIAC is a diode that conducts electrical current only after its breakover voltage, V_BO, has been reached momentarily. The term is an acronym of diode for alternating current. When breakdown occurs, the diode enters a region of negative dynamic resistance, leading to a decrease in the voltage drop across the diode and, usually, a sharp increase in current through the diode. The diode remains in conduction until the current through it drops below a value characteristic for the device, called the holding current, I_H. Below this value, the diode switches back to its high-resistance, non-conducting state. This behavior is bidirectional, meaning typically the same for both directions of current.
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diac /'daiək/

DIAC

DIAC

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DIAC