Subject:
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Re: Fairmont Speeder, small track powed motorcar
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Newsgroups:
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lugnet.trains, lugnet.parts
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Date:
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Mon, 28 Feb 2005 23:17:46 GMT
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Viewed:
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6658 times
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In lugnet.trains, Mathew Clayson wrote:
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In lugnet.trains, Mathew Clayson wrote:
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For those interested. Inside is a current limiting resistor and diode to
supply correct polarity low DC current to a rechargable battery and motor.
The track charger supply is rated at 6v using a 4 cell battery. The motor
spins while charging, and continues to run off the battery for a minute or
so after charging. With the car picking up current from the track, this is
fine for hands off running. It’s a bit ackward for controlling the car, as
it only runs forward, and takes a minute to stop.
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A correction to the above. The cars run off of 3 volts max, not 6 volts! And
the rechargable device is not a battery, but a specalized capacitor.
http://www.coiltronics.com/products_supercapacitors.asp These caps have
amazing storage capacity, but are rated at 2.5v and 3v surge. The series
diode drops the 3 volt input down to ~2.5 volts.
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What happens when you run it off 9V as you do? Is the capacitor getting
overvoltage? Would this have an effect on long term durability?
I had been thinking of playing iwth these to try to make a people mover using
Racers track but without much actual work done...
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