Re: continued: [Alsamodular-devel] sub harm. divider

[Alfons A. <fon...@al...>]

On Mon, May 26, 2003 at 02:28:43PM +0200, Lukas Degener wrote:

> Hmm... what is an integrator ? (now i guess i outed my self as a 
> complete moron :-) )
> Or maybe this is a language problem... can someone give the german 
> expression for Integrator?
> leo.org says "Integrierer", "Integrierschaltkreis", 
> "Integrierschaltung", "Integrierwerk", "Rechenwerk"... but none of these 
> rings a bell...

It's a simple circuit using an opamp, a resistor and a capacitor.
The output signal is the integrated value (w.r.t time) of the input times some
constant, so for a constant input the output will be rising or falling at constant
speed, if the input is linear the ouput will be a parabola, etc.

> Anyway, i guess the slope/amplitude correction thing is moreless what i 
> mentioned in the other reply?
> otoh, you mention voltage _rising_, so this is a "upwards saw wave?" And 
> _constant_ speed means that this is linear, not negative exponential as 
> i assumed?

It's definitely linear. Rising or going down depends on the sign of the 
input voltage. It probably doesn't matter.


FA