Recent content by dsurfer21

Thank you, I thought the same and I know there are other factors to consider for piston stability. However I was asked what distance D1 would eliminate binding ignoring all other effects. Is this a matter of solving for the moments about point B and making sure they sum to zero?

The moments at point B would be F times D2/2 minus Fn/2 times D1 As D1 goes to zero the moment at point B would be F times D2/2. I'm not sure how this relates to binding unless a positive moment is contributing to a force normal to the tube and friction comes into play. Is there another...

Hi, Another fellow engineer told me that for a dual connected piston guided inside a tube (as shown in the diagram below), the distance D1 has to be chosen correctly in order to avoid binding (I'm guessing from friction only) since there may be a side force present. This is ignoring gravity...

Hi, Certainly, for power you have to include a phase angle. I believe that my colleague used a phase angle correction to get the correct output power. When I had worked on that project while I was a grad student I always accounted for the phase angle. I'm still lost on whether the...

Hi, The output power of the amplifier was 248 watts (10.5 volts RMS, 23.4 amps RMS), and the power from the supplies was 332 watts (8.3 amps at +/- 20 volts) The power supplies are both DC power supplies, and the amplifier itself doesn't have any switching power supplies. Is it still...

Hi, I'm working on a project with a colleague involving amplifying some simple sine waves (20kHz) using an APEX Microtech Power Amplifier PA50 Two power supplies INSTEK SPS-3610 are connected in series and are supplying the amplifier with +/- 20 volts each. Each power supply can provide...