Can you test a DC voltage? It's always possible that we aren't reading voltages correctly.
Paul Alfille On 6/9/06, Jim Duda <[EMAIL PROTECTED]> wrote: > > > Yes, 60 Hz. I would expect the capacitor to remain at some steady state > voltage, somewhere around 1.5V. I don't have access to an oscillosope at > home. > > Jim > > > "Paul Alfille" <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED] > Not at all off-topic. > I'm no expert, but the schematic is at > http://www.hobby-boards.com/catalog/links/hvac2-r1/HVAC%20Monitor%20v2.0%20Schematic.pdf > > With 1M resitor and 1uF capacitor, the time constant is 1 second. What is > the frequency of your AC? 60Hz? > > Paul Alfille > > > On 6/7/06, Jim Duda <[EMAIL PROTECTED]> wrote: > > I apologize if this is off topic, since owfs seems to handle DS2450 just > > fine, as best I can surmise. > > > > I purchased a "HVAC Monitor Kit" from Hobby Boards. The description of > > the board states that it can measure any voltage up to 28V AC or DC. > > The design has a diode and a resistive voltage divider (100K/1M) on the > > front-end of the DS2450 voltage inputs. > > > > For the signal I want to monitor, my DVM measures 15V AC at the terminal > > lug of the HVAC Monitor. However, via owfs HTTP, I see various voltages > > between 240 mV and 1.5V, seems to be all over the place, like maybe a > > sinusoid :-) > > > > Can anyone offer any tips on how I might measure an AC voltage with this > > thing? > > > > Jim > > > > > > > > _______________________________________________ > > Owfs-developers mailing list > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/owfs-developers > > > > > > > ________________________________ > > > > > ________________________________ > > > _______________________________________________ > > Owfs-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/owfs-developers > > > > > > > > _______________________________________________ > Owfs-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/owfs-developers > > > _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
