Subject: Re: Reducing contact resistance for low volt use?
Summary: What do you think of these ping times eh?
Reply-To: You can't see me, and I pass right through planets...
References: <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com>
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Date: Tue, 07 Jan 2003 11:16:32 GMT
NNTP-Posting-Date: Tue, 07 Jan 2003 06:16:32 EST
On Tue, 07 Jan 2003 05:28:09 GMT, jmuchow@SPAMMENOTcamlight.com (John
Muchow) Gave us:
>>>> I don't know why the guy just does't make a DC to DC converter
>>>>that sustains a voltage setpoint throughout its range of use.
>>>> Feed it 28 or 30 volts from the battery packs to make 24
>>>> Or make a step up converter from a lower more realistic loaded
>>>> Even the slot car race boys have this stuff down. He should consult
>Umm...we're working with the R/C and slot "boys" about this unit right
>now. If they had a unit like this down, they would have told us. :-)
>Create a constant-current discharge load with the DC-DC converter? Or
>use a boost converter to do the same?
I have since shifted to a motor as a dyno as a solution. :-]
You get high current situation, and real power data at the motor end.
You could even hook up the exact same voltage rails as are in the
chassis of the bot, and get real data at the presumed motor connection
site. Any motor. The dyno, overkill motor, or the actual motors you
will be using. Probably more repeatable, controlled data. Your
dynamic load IS your real world load, and with a calibrated brake
pressure monitoring method, you get dynamic as well as stall data.
Allowing for cool downs between "burst runs" will extend the motor's
life. The dyno motor could be one that you simply cannot blow, but is
too big for the bot chassis. Perfect for a dyno chassis. :-]