Serious op amp issue.

[Shane1981]

So I'm using an lm358 op amp as a basic inverting amplifier to test the gain on my scope. I have calculated  the resistors for gain of -10. I'm using a 15 volt power supply for the supply pins and a 1volt input signal at 100 hz. The output I'm getting is 160 mV with a clipped off negative sine wave. How can this be?  I have checked everything 1000 times. It's only 3 components. The op amp and two resistors. So I can't imagine how it can be a connection error. I should be getting an out put of about 10 volts. I don't know. I have spent days on this. Please help!

[BNElecEng]

Have you got a negative supply?

[tecman]

Without a schematic, kind of hard to tell.  If you have a single power supply, connected to the op-amp will certainly exhibit problems.  if you bias the op-amp to 7.5 volts you could swing about +/- 5 volts.  Best solution is to get dual 15 volt supplies (+/- 15)

paul

[w2aew]

So I'm using an lm358 op amp as a basic inverting amplifier to test the gain on my scope. I have calculated  the resistors for gain of -10. I'm using a 15 volt power supply for the supply pins and a 1volt input signal at 100 hz. The output I'm getting is 160 mV with a clipped off negative sine wave. How can this be?  I have checked everything 1000 times. It's only 3 components. The op amp and two resistors. So I can't imagine how it can be a connection error. I should be getting an out put of about 10 volts. I don't know. I have spent days on this. Please help!

Sounds like your input signal is going beyond the permitted input voltage range of the op amp.  As others have said, posting a schematic, including how you're connecting your input signal, would help.

[Audioguru]

He also did not post the detailed schematic nor say exactly what the supply is on the other website forum.