Article View: sci.electronics
Article #4359Re: Battery Queries
From: Dick Lucas
Date: Thu, 15 Mar 1990 16:57
Date: Thu, 15 Mar 1990 16:57
7 lines
887 bytes
887 bytes
Why not use deep cycle batteries for the +/- 12 volts? (one for each polarity) For the 5 volt supply you can still buy 6 volt auto batteries. Most 5 volt requirements have a 10% tolerance on them and you could drop the required voltage with a large diode. This may not be a very elegant solution, but it would be cheap and easy to accomplish. If you assume a full volt drop across the diode (or two) the efficiency of this method is 83% which compares favorably with most switch mode power supplies.
Technical Details
Message-ID:
<1310026@hpcilzb.HP.COM>Path:
arc1-ca.pugleaf.net!utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!usc!ucsd!ucbvax!hplabs!hpda!hpcuhb!hpcilzb!dickReferences:
<32769@brunix.UUCP>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!usc!ucsd!ucbvax!hplabs!hpda!hpcuhb!hpcilzb!dick From: dick@hpcilzb.HP.COM (Dick Lucas) Newsgroups: sci.electronics Subject: Re: Battery Queries Message-ID: <1310026@hpcilzb.HP.COM> Date: 15 Mar 90 16:57:42 GMT References: <32769@brunix.UUCP> Organization: HP Design Tech Center - Santa Clara, CA Lines: 7