In sometimes when friends want to modify negative voltage source from the outside is positive voltage. We try to come to see this circuit use op-amp IC LM741, be usable easily and, It can change R1,R2 for fix the expansion ratio has of the circuit with. See the detail in the circuit adds.
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This entry was posted on Monday, December 8th, 2008 at 2:11 am and is filed under 741, op-amp circuit.




