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Old 05-08-2007, 09:36 PM   #11 (permalink)
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Default Re: Resistors??

22k will not work. a 20k variable resistor has three legs, and varies 0-20k ohms between legs 1 and 2, and 20k-0 ohms, between legs 2 and three, when turning from fully counterclockwise, to clockwise.

As you can see, you could have any combination of resistances, but with a 22k, not only are you over the value of the pot, you wont be able to adjust to, say, 6.5k ohms. In short, get a pot.


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Old 05-08-2007, 09:41 PM   #12 (permalink)
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Default Re: Resistors??

In general electronics, why do people connect a "powered", e.g. 5v DC line, to the GND?


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Old 05-08-2007, 10:08 PM   #13 (permalink)
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Default Re: Resistors??

well you shouldn't. ground is a reference point for the current to travel to. in DC current you have positive and ground, labeled VCC and GND.

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Old 05-09-2007, 11:30 AM   #14 (permalink)
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Default Re: Resistors??

Spiked Cola,,, What do you mean get a pot??
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Old 05-09-2007, 12:04 PM   #15 (permalink)
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Default Re: Resistors??

is there a site that i can type in a voltage then the resistor value, then it will tell me what the output value would be? Send a Link plz.....
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Old 05-16-2007, 11:32 AM   #16 (permalink)
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Default Re: Resistors??

i am a electrical engineer. the only output u can get is a current unless u using a voltage-divider and then u can calculate a voltage output after da first risistor. if u use a voltage-divider u need two resistors. u shouldnt mess around with electronics if u dont know what u doing. u can can get more voltage like u want but u accually have to pump in more current, coz changing that resistor will increase the voltage only over that resistor not where u want it to be coz more resistance means less current and less current means less voltage elsewhere in the circut. ur best bet is to use a molex connecter and a transistor a few resistors to create a constant current source and use that to get ur extra voltage. but its alot of calculations and measurements and knowledge in electonics if u wana do what u want to do. so rather leave it and upgrade

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