Hi folks, I've been looking into "http://en.wikipedia.org/wiki/Operational_amplifier_applications#Integrator" [Broken] as a way to add ramps to signals. I'd like to get a ramp rate on the order of 0.1 V/s, which suggests the use of capacitors in the neighborhood of 10-100 uF. Many electrolytic and tantalum caps have these values, but a polarized cap isn't appropriate with the bipolar charging sequences used in integrators. I've heard that polarized caps are sometimes attached back-to-back to simulate a nonpolarized cap, but that the response is non-linear. Nonpolarized caps with the desired values seem relatively expensive (an exception appears to be TDK's multilayer ceramic caps, e.g. FK24Y5V1A106Z, sold by Mouser, if these are non-polarized). Any suggestions or experiences in this area? Thanks!