How Do You Calculate Resistance In Op-Amps?
Operational amplifiers — or op-amps for short — are integrated electronic circuits that are used as the active component in amplifiers, voltage converters, oscillators, and other types of electronic devices. Since op-amps are active devices, it is difficult to determine the resistive value of an op-amp in a circuit by direct measurement across the op-amp electrical leads. Instead, Ohm’s law must be used to calculate the resistance of an op-amp. Attach one of the resistor leads to the operational amplifier output pin, and attach the free end of the load resistor to electrical ground. Cut a length of wire, strip each end of 1/2 inch of insulation, and attach one end of this wire to one of the terminals on the 12-volt power source. Attach the other end of this wire to the noninverting input, and twist the wire to the op-amp lead. Cut a second length of wire, and strip each end of 1/2 inch of insulation. Attach one end of the second wire to one of the terminals on the 6-volt power source
