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actually i m trying to measure the minute volts generated in the plant leaves..........i don't know whether i m right or wrong ..... but suppose if u have an input of the order of mv or nv ....... how do u calculate gain and decide about amplifier
dear you just have to experiment the gain value.
I suggest you to use OP177 for the gain of 1M.
then see the signal on scope, this output will suggest you the further processing.
actually i tried to measure the resistance of the leaves by inserting electrodes at various places and measures the resistanve using a multimeter which turned out to be 1 megaohm.......... now i have to see sutaible amlification and signal processing technique........................... i got little idea of myoelectric signals....
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the resistance is of the order of megaohms.......... will this op amp amplify the signal to a sutaible level for further processing or please suggest me any instrumentation amplifier ..... i read that this amplifier is used to amplify too weak signals...............
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