I will fabricate and test then make a video and post on. YouTube and post in here waiting on the Zener diode that I order! Tks
Pascal Lardy 954 256 4535 [email protected] > On Nov 8, 2015, at 5:26 PM, Cor van de Water via EV <[email protected]> wrote: > > Hi David, > Thanks for reminding me, I wanted to respond to this but got sidetracked > and forgot. > In several discussions with Lee Hart, the gist of the zener battery > balancer > is that there is no one perfect solution and it is just a matter of > matching > the parts that you can get to the batteries you are using. > So, if the batteries exhibit a full charged resting voltage of 13V then > it is best to match that with the voltage where the zener regs conduct > (almost) no current. There is no sharp cut-off with zeners (unlike > electronic circuits) but they are simple and rugged and luckily > available in different > voltages, so you can mix and match, for example getting a 6.2V and a > 6.8V > zener and putting those in series will give you a pretty good shot at a > regulator that should stop bypassing below 13V while giving a decent > bypass > capability. When you use 5 Watt zeners then it should be no problem to > size > the circuit for a max 1/2 Amp bypass. > For example if the max voltage on the battery is 15V then 2V is dropped > by the bypass resistor, so a 3.9 Ohm 2 Watt resistor should do the job, > together with a red LED and 100 Ohms 1/4 Watt resistor to indicate when > the reg is bypassing. > > Note that zeners are not always exactly the nominal voltage, so do > measure > when they start conducting and if it is much lower than you expect, you > can string two of the "6.8" zeners in series instead. > > Hope this clarifies, > > Cor van de Water > Chief Scientist > Proxim Wireless > > office +1 408 383 7626 Skype: cor_van_de_water > XoIP +31 87 784 1130 private: cvandewater.info > > http://www.proxim.com > > This email message (including any attachments) contains confidential and > proprietary information of Proxim Wireless Corporation. If you received > this message in error, please delete it and notify the sender. Any > unauthorized use, disclosure, distribution, or copying of any part of > this message is prohibited. > > > -----Original Message----- > From: EV [mailto:[email protected]] On Behalf Of EVDL > Administrator via EV > Sent: Sunday, November 08, 2015 2:53 AM > To: [email protected] > Subject: [EVDL] inquiry about Lee's battery regulators > > The list received in inquiry about battery regulators recently. The > poster > dropped it in the middle of a thread so folks might not have noticed it. > > The gist of it is this, edited a bit to remove some excessive battery > information: > > Could you help me with the zener battery regulators that are described > in > "Minimalist Battery Regulators" by Lee Hart, with modifications by Cor > Van > de Water? > > http://www.evdl.org/pages/hartregs.html > > I own a hybrid sailboat with 12 x 12 volt 155AH (C20) AGM batteries. > > I would like to install zener regulators to make sure that each battery > gets > the right voltage. Minimum voltage needs to be 12.18v, and maximum > voltage > needs to be no more than 14.6v. > > I like the Cor Van de Water design better because the life of a LED is > much > longer than a regular bulb. > > Can you tell me what Zener diode I need for Cor's version? Two of 6.8 > V? > > By the way, I was trying to buy the kits, but the link doesn't work, and > > it's for flooded batteries. (Not sure what he means here. -- David) > > Thanks, > > Pascal Lardy > David Roden - Akron, Ohio, USA > EVDL Administrator > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > EVDL Information: http://www.evdl.org/help/ > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > Note: mail sent to "evpost" and "etpost" addresses will not > reach me. To send a private message, please obtain my > email address from the webpage http://www.evdl.org/help/ . > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at NEDRA > (http://groups.yahoo.com/group/NEDRA) > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) > > ____________________________________________________________ > Save with AmexTravel > http://thirdpartyoffers.netzero.net/TGL3255/563fdd466112c5d46108cma02duc > _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
