A step-down transformer has a turns ratio less than 1 . 降压变压器的匝数比小于1。
Only transformer coupling can contribute to the voltage gain of an amplifier by virtue of a stepup turns ratio . 只有放大器耦合方能通过开压匝数比提高变压器电压增益。
A step - down transformer has a turns ratio less than 1 降压变压器的匝数比小于1 。
Aerospace series - elements of electrical and optical connection - test methods - part 704 : electrical elements - measurement of turns ratio on a transformer used in a coupler 航空航天系列.电气及光学连接元件.试验方法.第704部分:电气元件.耦合器用变压器的匝数比测量
Each unit of transformer is tested in accordance with the following items : winding d . c resistance test . measurement of turn ratio and calibiation of voltage vector relation . measurement of impedance voltage and load loss 直流电阻测试匝数比测量及电压矢量关系的校定阻抗电压及负载损耗的测量空载损耗及空载电流的测量工频耐压测试感应耐压测试绝缘电阻测试局部放电测试外观和尺寸的检验铭牌的检验等。
匝数: number of turns; number of w ...比: 2抽头匝数比: tapping ratio伏恃匝数比: voltage-turns ratio降压匝数比: step down turns ratio变压器匝数比: ratio of transformer; turns ratio of a transformer次级对初级的匝数比: secondary to primary turn ratio匝数: [电学] number of turns; number of windings安匝数: ampere windings; ampere-turns; amperetur; number of ampere turns匝数表: winding turn recorder匝数计: turn indicator总匝数: total number of turns比数比: dor; odds ratios齿数比: gear ratio倒数比: reciprocal proportion读数比: read around ratio; read-around number; read-around ratio模数比: modulus ratio偶数比: even ratio频数比: frequency ratio头数比: specific lobe形数比: aspect ratio转数比: ratio of revolutions安培匝数: amp turns; ampere turns; ampere winding; ampere-turns; ampere-winding; ampereturn磁路安匝数: number of ampere turn of magnetic circuit定子安匝数: stator ampere-turn