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I will use sleep mode, 2 uA isn't so bad after all. Thanks to everybody who contributed to this thread.

Ok, thanks for your help.

I am thinking of using Microchip MRF24J40MA which draws 2 microAmps when in sleep mode. I think this is too much and I would like to disconnect power from the all chips and components completely. What chips are available to prevent bouncing from a mechanical switch? Can a duration be...

I am about to start a simple wireless project. Basically, when the user pushes or releases a button on a remote unit, some data should be transmitted to a main unit. Thus, when the button is pressed or released, I need power for about two seconds on the remote unit. At all other times, I want...

Greg Locock: You are correct that 0.3 N is not a particularly small force. However, this corresponds to a constant force (the DC-component sent into the shaker). The vibration force (corresponding to the AC-component sent into the shaker), on the other hand, will be very small. I would like to...

Thanks for all your advice. I plan to connect the force transducer to a Bruel & Kjaer Mini-shaker type 4810. The shaker will generate vibrations that will be picked up by a bone-conductive microphone and these vibrations are very small. The greatest force I need to measure is about 0.3 Newton...

I need a highly sensitive (> 100 mV/N) force transducer. Who except Bruel & Kjaer makes these? Thanks in advance!

I found some amplifiers which can amplify both DC and AC-signals. Labworks, inc makes them.

Thanks for all your comments and advice. I work in the bone-conductive microphone industry and I need to displace the shaker about 0.125 millimeters and I will only offset it for two seconds every ten seconds so I think it should be fine. Greg Locock: You mentioned a manufacturer called...

I would to perform some vibration tests using the Brüel & Kjær Mini-Shaker Type 4810. My test setup is a little odd because I want the shaker to be slightly displaced from its default position when performing the tests. This means the signal I send to the shaker must have a DC-bias. I have an...