I'm trying to invert a square wave signal.
Signal:
Vp-p = 10V
freq = 2.44KHz - 2.6KHz
I want a gain of -1
In simulations both the 318 and 741 are able to do this with little distortions When I calculated the Slew-rate, the 318 was greatly higher overspec, and the 741 just had enough.
However, when I build the circuit. Even though I have the circuit hooked up exactly like the multsim like this:
there is a ton of noise on the oscilloscope.
If I replace the 318 with a 741 (without changing the circuit) all the noise goes away. If there any reason why it does this?
(I should have took a picture).
What's confusing me the most, is when the 318 is hooked up, even the input signal gets distorted. I tried setting the oscilloscope to look for averages, but even that was unreadable.
The 741 works, but the fact that I couldn't get the 318 to work this has always bothered me.
p.s I've already tried switching op-amps and oscilloscopes. DMM seems to be getting a different vale from the scope too.
Signal:
Vp-p = 10V
freq = 2.44KHz - 2.6KHz
I want a gain of -1
In simulations both the 318 and 741 are able to do this with little distortions When I calculated the Slew-rate, the 318 was greatly higher overspec, and the 741 just had enough.
However, when I build the circuit. Even though I have the circuit hooked up exactly like the multsim like this:
there is a ton of noise on the oscilloscope.
If I replace the 318 with a 741 (without changing the circuit) all the noise goes away. If there any reason why it does this?
(I should have took a picture).
What's confusing me the most, is when the 318 is hooked up, even the input signal gets distorted. I tried setting the oscilloscope to look for averages, but even that was unreadable.
The 741 works, but the fact that I couldn't get the 318 to work this has always bothered me.
p.s I've already tried switching op-amps and oscilloscopes. DMM seems to be getting a different vale from the scope too.