Do this is a mistake or ultra-deep wisdom?

Thread Starter


Joined Aug 21, 2017
Circuit of 60 fA op.amplifier elaborated at India for electrometric Farady Cup. Factually FC is a CURRENT source with physical resistivity about 10^17 Ohms, thus I guess, may be the "dumb mistake" in circuit isnt mistake at all?? What is Your opinion? Circuit stands in article page 10 fig 5 and surprizing point is where 1.0 GOhm meets 10 MOhm.