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Introduction to Electric Circuits | 9th Edition | ISBN: 9781118477502 | Authors: James A. Svoboda, Richard C. Dorf
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Anewelectroniclamp(e-lamp)hasbeendevelopedthat uses a radio-frequency sinusoidal

Chapter 11, Problem DP11-6

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QUESTION:

A new electronic lamp(e-lamp) has been developed that uses a radio-frequency sinusoidal oscillator and a coil to transmit energy to a surrounding cloud of mercury gas as shown in Figure DP 11-6a. The mercury gas emits ultraviolet light that is transmitted to the phosphor coating, which, in turn, emits visible light. A circuit model of the e-lamp is shown in Figure DP 11-6b. The capacitance C and the resistance R are dependent on the lamp’s spacing design and the type of phosphor. Select R and C so that maximum power is delivered to R, which relates to the phosphor coating (Adler, 1992). The circuit operates at \(\omega_0 = 10^7\) rad/s.

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QUESTION:

A new electronic lamp(e-lamp) has been developed that uses a radio-frequency sinusoidal oscillator and a coil to transmit energy to a surrounding cloud of mercury gas as shown in Figure DP 11-6a. The mercury gas emits ultraviolet light that is transmitted to the phosphor coating, which, in turn, emits visible light. A circuit model of the e-lamp is shown in Figure DP 11-6b. The capacitance C and the resistance R are dependent on the lamp’s spacing design and the type of phosphor. Select R and C so that maximum power is delivered to R, which relates to the phosphor coating (Adler, 1992). The circuit operates at \(\omega_0 = 10^7\) rad/s.

ANSWER:

Step1 of 4

At  , the source impedance is ,

 

 

 

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