X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com Message-ID: <20120316150615.29273.qmail@stuge.se> Date: Fri, 16 Mar 2012 16:06:15 +0100 From: Peter Stuge To: geda-user AT delorie DOT com Subject: Re: [geda-user] Daughter's Science Fair Mail-Followup-To: geda-user AT delorie DOT com References: <20120316142719 DOT 26210 DOT qmail AT stuge DOT se> <4F63506D DOT 90602 AT keensupport DOT net> <4F6354C2 DOT 10502 AT keensupport DOT net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4F6354C2.10502@keensupport.net> Reply-To: geda-user AT delorie DOT com Errors-To: nobody AT delorie DOT com X-Mailing-List: geda-user AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk Joe Knapp wrote: > What may work for you though, is that if you place the two coils, > perhaps in series, perhaps adjacent, one with the light bulb connected > and the other with the battery, you may see the light bulb illuminate > briefly when you disconnect the battery. Add a normally-open pushbutton on the battery side and you might be able to "pump" light by pushing the button at a nice steady pace. //Peter