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		Smoke Detectors & Sensors
																													
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								| Circuit forms gamma photon detector: 04/24/03  
							EDN-Design Ideas / The circuit of Figure 1 includes 
							a PIN photodiode that detects individual photons of 
							gamma radiation. The reverse bias on the photodiode 
							sometimes creates a depletion region. When such a 
							photon strikes this depletion region, a small amount 
							of charge develops. This charge is proportional to 
							the photon's energy... |  
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