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- Path: sparky!uunet!peora!gator!inland!bloom
- From: bloom@inland.com
- Newsgroups: rec.models.rc
- Subject: Re: Battery Discharge Circuit For Tx/Rx
- Message-ID: <1993Jan27.080909.2610@inland.com>
- Date: 27 Jan 93 08:09:09 CST
- References: <C16Csu.3LG@news.rich.bnr.ca>
- Organization: Inland Steel Company; East Chicago, IN
- Lines: 26
-
- In article <C16Csu.3LG@news.rich.bnr.ca>, martyg@bnr.ca (Martin Gallant) writes:
- > I have just become the owner of a (new) Futaba 4-channel FM transmitter
- > and corresponding receiver. This is my first R/C radio set. I would
- > like to cycle both battery packs a couple of times before their first
- > flight, to get an estimate of their capacity.
- >
- > I have also been told this is a good idea for new NiCd's anyway.
- > Opinions?
- >
- > I need an inexpensive method to discharge the packs, ie. simple resistor
- > and miniature light bulb method. Can anyone supply a schematic and a
- > parts list? Is there an archive for this sort of information?
- >
-
- Your transmitter may have a diode in the charging circuit to
- prevent cycling thru the charge jack. In this case, you have to
- remove the battery pack. Hook up an ESV, if no voltage is
- measured, you have a diode. A real cheap cycling method is to
- charge up your system for 14 hrs using the standard wall charger,
- and then turn your transmitter and receiver on, and operate
- the sticks while you sit and watch TV. You should do this for
- about 90 minutes for the standard discharge. This also burns
- in your servos, so you find out if there is a problem before
- you fly the plane. Repeat the procedure a few times and you
- should be confident about your battery capacity and radio
- / servo reliability.
-