Hi Monroe, > It is for a Plan B envelope generator (elf). The time range of the > A,D,R events is much too wide, making it so that only a small angle of > turn contains useful settings. So what would you recommend? On the face of it it looks like decresing the pot values is what you need to do, *BUT*, because of the 'add on' module to give voltage- control of everything, the circuitry in the main module will necessarily be more complicated, and so this might not be an obvious mod to do. My recommendation would be to ask Peter Granader directly, over on the Plan B group. > I'm confused about what Stu said. Increasing resistance increases the > voltage throughput? No it won't, but he didn't actually say that. > If you go to infinite resistance by breaking the > path then no signal goes through. If you add a resistor in a series > circuit, the voltage across each other resistor drops. Intuitively, > resistors slow down current, so adding resistance in the current path > should decrease the energy of the signal. So shouldn't the effect be > the opposite? Most of what you say here is more or less right. Stu was talking about adding another resistor *in parallel* (so they are joined together at both ends), what you are talking about above is adding them *in series*, and there is a big difference. When added in parallel, a second resistor of the same size as the existing one will pass the same current as the first, so you now have twice the current flowing, which effectively looks like you have halved the resistance. (And for what it is worth, I think what Stu said will only work for the 'variable resistance' way of using pots, and not for the 'potential divider' way!) Tim
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Re: basic circuit question
2008-08-10 by Tim Stinchcombe
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