kpatrick
Newbie level 4
opamp (3v power use)
Hi,
I have a 3V power supply. I am using a op (IC 741) with 3v and ground...
Is there an easy way to use it with 3v and -3v...?
I cannot change the power supply. I get a signal from an electret microphone. I use a capacity to get rid of AC signal, but after using the opamp as preamplifier with (factor 22) I get a signal which has a dc value of about 1.9V and the 0.5AC Signal on top of it.
And the negative values could be suppressed by amplification.
Does anybody know how I can use it correct and easy?
Best Regards,
Patrick
Hi,
I have a 3V power supply. I am using a op (IC 741) with 3v and ground...
Is there an easy way to use it with 3v and -3v...?
I cannot change the power supply. I get a signal from an electret microphone. I use a capacity to get rid of AC signal, but after using the opamp as preamplifier with (factor 22) I get a signal which has a dc value of about 1.9V and the 0.5AC Signal on top of it.
And the negative values could be suppressed by amplification.
Does anybody know how I can use it correct and easy?
Best Regards,
Patrick