Re: [EVDL] Voltage sensing shut off switch

2015-06-25 Thread Lee Hart via EV
damon henry via EV wrote: Thanks Lee, This is just the type of solution I was hoping to find. You're welcome. Glad to help. :-) My 12 hour spring wound timer died, and they did not have another one at Home Depot so I bought one of these instead.

Re: [EVDL] Voltage sensing shut off switch

2015-06-25 Thread damon henry via EV
: [EVDL] Voltage sensing shut off switch From: ev@lists.evdl.org damon henry via EV wrote: Thanks Lee, This is just the type of solution I was hoping to find. You're welcome. Glad to help. :-) My 12 hour spring wound timer died, and they did not have another one at Home Depot so I

Re: [EVDL] Voltage sensing shut off switch

2015-06-24 Thread damon henry via EV
. damon Date: Wed, 24 Jun 2015 10:56:59 -0500 From: leeah...@earthlink.net To: damonhe...@hotmail.com; ev@lists.evdl.org Subject: Re: [EVDL] Voltage sensing shut off switch damon henry via EV wrote: Has anyone ever made a circuit to shut off a switch once a predetermined voltage limit has

Re: [EVDL] Voltage sensing shut off switch

2015-06-24 Thread via EV
: [EVDL] Voltage sensing shut off switch Thanks Lee, This is just the type of solution I was hoping to find. I have no plans to add a BMS to my calb cells on my motorcycle. I can see that this presents the most danger for me during charging. I currently charge on a timer, so that even if I forget

Re: [EVDL] Voltage sensing shut off switch

2015-06-24 Thread Lee Hart via EV
damon henry via EV wrote: Has anyone ever made a circuit to shut off a switch once a predetermined voltage limit has been hit while charging. I would love to work on something small that is easy to carry. It would plug directly into a standard Nema 15 120 volt 15 amp receptacle and have it's

Re: [EVDL] Voltage sensing shut off switch

2015-06-23 Thread Michael Ross via EV
The Engineering Notebooks by Forrest Mims (sold by Radioshack originally) are a great resource for simple circuits like this. You can take your choice of method. A comparator circuit occurs to me first. It will change its output based on the difference between two voltage signals. When the