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if it's tethered, why can't you use two wires?if you have only one wire, you can't really do much with it (unless you adapt something like a one-wire protocol).and btw, what the hell is a rhetorical circuit? i never though rhetorics cad anything to do with robotics (unless you're trying to sell them of course )
you mean like a capacitor as a battery. yea i think that should work if like this.[img][C:\Documents and Settings\All Users\Documents\My Pictures\untitled.sch/img]
Can't you simply split the road in two, and have two "hanging" connectors?
Both battery and cap are connected in circuit at both ends..
Even so, your circuit as shown will only conduct until the cap is charged.
Not really sure who taught you electrical symbols... but you have a batteries positive source going to ground?
Furthermore, a capacitor is a DC blocking component.... so for example say you have a 1.5 V battery hooked up to a capacitor. You'll charge the capacitor up according to the equation Vc = Vbat* ( 1 - e^-t/RC ). So... according to KVL there all the voltage drops across a circuit have to add up to battery voltage... and your battery voltage is appearing across the capacitor, therefore no more current will flow.So in short, to get this right you're going to have to disconnect the capacitor everytime it charges to battery voltage, which will happen a lot. Not to mention a capacitor holds very very little charge when compared to the energy a lithium-ion battery, or any battery really, can hold.
So instead of wasting space with a heavy battery, i will use a capacitor.
i think i'll just use this capacitor battery: http://www.quality-deal.com/osCommerce/product_info.php?products_id=28.
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