Re: A92: Sound on my TI
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Re: A92: Sound on my TI
David Kühling schrieb:
>
> Arno Kizina wrote:
>
> > > Another question: I build myself an adaptor, with these standard
> > plugs
> > > you
> > > can buy everywhere. In some text-file about sound on the TI-92, I
> > read
> > > that the mass-wire should be connected with the mass of the
> > headphone
> > > by a 45K Ohm resitor. Do anyone know why this is neccessary (45KOhm
> > > or a cutted wire is the same, and works both fine)
> > >
> > >
> > It is for currency restriction . The law of Ohm tells us U=R*I, which
> > tells us
> > that, the lower the resistance the higher the currency.
>
> I don't think so. The linkport has a voltage of some volt. this means,
> if the resistance
> becomes higher, and the voltage keeps the same, the amperage will
> decrease.
Isn't that the same??
> Because of the formula P = U * I, the power will decrease, too, and so
> there
> would only be very few power, which can be transmited through the wire.
> If the resistance is 45K Ohm (+ 32 Ohm of the earphones) and the voltage
> is
> about 1 Volt, the amperage will be around 0.022 mA, and the power will
> be 1V * 0.022mA = 0.022W. Can there be any sound with only 0.022W?
That was I think, implied!!
A.K.
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