Subject:
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Re: Motor Voltage Hack
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 15 Apr 1996 15:15:44 GMT
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Original-From:
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Larry Randall <lrand@cts.^Spamless^com>
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Viewed:
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1806 times
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On Sun, 14 Apr 1996, Sean Cunningham wrote:
> > Want to use motors of different voltage than the 9V required by HandyBoard?
> > Then read this. • [snip]
> > will find a 4 pin header socket with the 2 pins on the left marked '+' and
> > the 2 pins on the right marked '-'. I plugged my motor drive battery pack (
> > 4 Alkaline 'C' cells for 6.4v) into this header and WALLA, (WALLA ?) I have
> > a new battery drive voltage.
>
> Thanks for this great tip - Can we also tie this second battery pack into
> the nicad charging system somehow?
Yes, I believe so. I was thinking of that last night but haven't had a
chance to look it over. I think you would need to temporarally reconnect
the cut with some form of voltage drop,(several diodes in series ?) when
the charger is connected. If the cut is reconnected with considerable
difference in voltages, the larger would overpower the charger and
charge the smaller battery at max current. Resulting in
heat/smoke/boom. I'll let everyone know if I come up with a safe
mathod. Hopefully in a couple days.
Larry
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Message is in Reply To:
 | | Re: Motor Voltage Hack
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| (...) [snip] (...) Thanks for this great tip - Can we also tie this second battery pack into the nicad charging system somehow? Sean R. Cunningham MSI Consulting Group (URL) (28 years ago, 15-Apr-96, to lugnet.robotics.handyboard)
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