The food humidity detector circuit (1)

Published:2011/7/21 0:13:00 Author:Borg | Keyword: food humidity detector | From:SeekIC

Element selectionR1～R3 are adopted with the 1/4 carbon film resistor; R4 is the 1/2W metal film resistor; RP is the mixed film potentiometer; C1 and C2 are the dacron capacitor or the monolith capacitor; C3 and C4 are the high frequency pottery capacitor; C5 is the aluminum electrolytic resistor with the withstand voltage of 16V; VD1 and VD2 are the 2AP9 ordinary Ge diodes or IN4148 silicon switch diodes; VS is the 2CW14 or 2CW55(1/4W, 6～7.5V) regulated diode.



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