a. Using Fig. 17.24b, determine the minimum irradiance required to fire the device at room temperature (25C).
Question:
a. Using Fig. 17.24b, determine the minimum irradiance required to fire the device at room temperature (25°C).
b. What percentage reduction in irradiance is allowable if the junction temperature is increased from 0°C (32°F) to 100°C (212°F)?
Fig. 17.24b
Transcribed Image Text:
40 20 10 Triggering region 0.8 0.6 No units trigger in this area 0.4 0.2 Notes: (1) Shaded area represents the locus of possible triggering points from -65°C to 100°C (2) Applied anode voltage= 6 V de (3) Gate to cathode resistance = 56,000 (4) Light source perpendicular to plane of header. 0.1 0.08 0.06 0.04 -60 -40 -20 20 40 60 80 100 Junction temperature (°C) (b) TIL | 2. Effective irradiance (mW/cm2)
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Related Book For
Electronic Devices And Circuit Theory
ISBN: 9781292025636
11th Edition
Authors: Robert Boylestad, Louis Nashelsky
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