Problem 13 design a light dimmer circuit that will control a 100w 120vac incandescent lamp where the lamp is completely on when a dc control voltage is 5v, completely off when the dc control voltage is 0v, and that continuously varies in intensity from completely off to completely on as the control voltage is varied between 0v and 5v. you may assume thyristors with the specifications given below are available for your design.

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k