Here is a post from John in Sterling's old yahoo group:
Sat Mar 1, 2008 4:42 pm
Re: Solar SG
Richard,
When using the SG to charge batteries with solar panels, you must match
the impedance of the panel to the SG.
To do this you need capacitors at least 20.000 uf 75 volts we run the
SG all the time this way. Set the SG to pull over 1 amp of current by
setting the base resistor. the next question, is it a multi-coil
machine, if so set it to pull over 5 amps min.
John
--- In Bedini_SG@yahoogroups.com, "Richard Schroder" <schrosound@...>
wrote:
>
> The sun was out yesterday so I decided to try running my SG off a
> solar panel through a battery charge controller. The controller output
> specs are 12v, 374W, 22A. The open voltage across the controller was
> 29v and the "charge" light off. Don't know the panels specs but its
> about 2' x 4'. When hooked to the SG with a 12v deep cycle on the back
> it still showed 29v, charge light on and the SG drew about 200mA but
> ran very slow and could never get up to its usual one pulse, 650 rpm,
> 180mA when running off a battery. When I switched back to my usual
> primary battery (showing 12.7v at rest) with a solar charge assist, it
> ran fine and showed 13.0v across the primary. Does a battery charge
> controller need to see a battery across its output or could I trick it
> with a capacitor or something? I can read a schematic enough to build
> a circuit but don't know how to design or analyze one so don't know
> what value cap might work if at all. Will try a very small battery to
> make the controller happy but no sun today.
Sat Mar 1, 2008 4:42 pm
Re: Solar SG
Richard,
When using the SG to charge batteries with solar panels, you must match
the impedance of the panel to the SG.
To do this you need capacitors at least 20.000 uf 75 volts we run the
SG all the time this way. Set the SG to pull over 1 amp of current by
setting the base resistor. the next question, is it a multi-coil
machine, if so set it to pull over 5 amps min.
John
--- In Bedini_SG@yahoogroups.com, "Richard Schroder" <schrosound@...>
wrote:
>
> The sun was out yesterday so I decided to try running my SG off a
> solar panel through a battery charge controller. The controller output
> specs are 12v, 374W, 22A. The open voltage across the controller was
> 29v and the "charge" light off. Don't know the panels specs but its
> about 2' x 4'. When hooked to the SG with a 12v deep cycle on the back
> it still showed 29v, charge light on and the SG drew about 200mA but
> ran very slow and could never get up to its usual one pulse, 650 rpm,
> 180mA when running off a battery. When I switched back to my usual
> primary battery (showing 12.7v at rest) with a solar charge assist, it
> ran fine and showed 13.0v across the primary. Does a battery charge
> controller need to see a battery across its output or could I trick it
> with a capacitor or something? I can read a schematic enough to build
> a circuit but don't know how to design or analyze one so don't know
> what value cap might work if at all. Will try a very small battery to
> make the controller happy but no sun today.
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