How does a PN junction photodiode operate?
What will be an ideal response?
A PN junction photodiode operates on the same principles as a photovoltaic cell except that it is used to control current flow, not generate it. A reverse-bias voltage is applied across the photodiode, forming a wide depletion region. When light energy strikes the photodiode, it enters the depletion region, creating free electrons. The electrons are drawn toward the positive side of the bias source. A small current flows through the photodiode in the reverse direction. As the light energy increases, more free electrons are generated, creating more current flow.
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IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS
What, in inches, is the circumference of 1/4” pipe that has an I/S diameter of 15”? Give the answer to the nearest hundredth.
What will be an ideal response?
An existing intersection consists of a turning movement of 75 degrees, and the radius of the edge of pavement is 60 ft. The turning radius has no entry taper. What is the largest design vehicle that is accommodated at the intersection? What improvements would you recommend be made if this movement is to accommodate a WB-67 design vehicle?
What will be an ideal response?
Which of these was given as a possible element of a mission statement?
A. Rate of change B. Focus groups C. Competitive advantage D. Vision coherence