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Question: the signal conditioning is with op amps i need the...

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Two matched LDRs are used in the circuit below with R versus I as shown on the figure. 3滸 sa 5cc 1 3 LEDRED 139 Design a signal conditioning circuit that : Gives Vout:0 when l -In-20 mW / cm2 Turns on the LED alarm whenever I,-20mW/cm2 and in$10mnW/cm?

the signal conditioning is with op amps.

i need the second question.

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