Hi,
I am looking for an air pump which can provide (1) a stable DC pressure of 0 - 300 [mmHg], and (2) an AC pressure(on top of the DC pressure) with an amplitude of 0 - 30 [mmHg] ahttp://www.eng-tips.com/threadminder.cfm?pid=407t a frequency of 0 - 100 [Hz].
All these parameters (DC pressure...