how to use op-amp to measure current?

as truely said by exp, the gain (hfe or beta)of a transistor can be only calculated when it is in the active region and not when it is destroyed .
do check on the datasheet for the transistor u r putting on test and calculate suitable values of the base and collector resistances.

all types of instrumentation amplifier also can be used for amplify the voltage?

all types of instrumentation amplifier also can be used for amplify the voltage?

christie

i think for ur application any instrumentation amplifier would suffice . u could even make one using a quad op-amp general purpose single supply op-amp IC like lm324.

my supervisor require me to add one more DAC. Shall i do it? :-s

DAC? what for ?? . can u clarify its purpose?

my supervisor require me to add one more DAC. Shall i do it? :-s

christie

DAC or ADC ?