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59263Re: PS Head???

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  • jabmechtech
    Apr 1, 2009
      THANKS, Wilf, Simon, and JO.
      jab

      --- In beam@yahoogroups.com, "wilf_nv" <wrigter@...> wrote:
      >
      > You are right Simon, my mistake, too rushed to doublecheck. I have posted a non-solar version and removed the offending layout
      >
      > wilf
      >
      >
      > --- In beam@yahoogroups.com, Simon Fraser <yahoo@> wrote:
      > >
      > > Hi Wilf
      > >
      > > You scared me for a minute there! I've built two SPSH from the
      > > schematic, and both work well.
      > >
      > > I've double-checked the circuit at <http://www.beam-wiki.org/wiki/Power_Smart_Heads#Solarized_Power_Smart_Head
      > > > against the schematic, and they match. I think you may have been
      > > confused because in the circuit the +V rail is at the top, whereas in
      > > the schematic, the 0V is on the left (so it's not simply rotated 90
      > > degrees). Note also that the 2N3906 and 2N3904 are shown in top view.
      > >
      > > Simon
      > >
      > > On Mar 30, 2009, at 10:31 pm, wilf_nv wrote:
      > >
      > > >
      > > > Note the layout of the SPSH at the beam wiki site was incorrect.
      > > > Check out the corrected version in my folder first. To unsolarize
      > > > it, replace the solar cell with a 3V battery. To simplify the
      > > > unsolar SH circuit you can remove all components shown below the IC
      > > > and just tie pin 11 to pin 10.
      > > >
      > > > wilf
      > > >
      > > >
      > > > --- In beam@yahoogroups.com, "jabmechtech" <jabmechtech@> wrote:
      > > >>
      > > >> hi, Wilf.
      > > >> I'm working on a PS head 1DOF, and the motor I'm using dose not
      > > >> want to be solarized.
      > > >> looking at the circuit, where do I stop the solar part and switch
      > > >> to battery?
      > > >> I know I need to run pin10 and 19 to grnd, but,
      > > >> what do I do with pi 11?
      > > >> it gets connected to the collector of the 2N3906,in the solar
      > > >> version.
      > > >> what dose pin 11 get hooked to in the battery mode?
      > > >> thanks for the help.
      > > >> jab
      > > >>
      > >
      >
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