[sdiy] Questions about diode usage in an AR/ASR/ADSR generator

[harrybissell]

If you use Analog Switch... in most cases you don't need the diodes
anymore. They are usually used in place of the switches...

Your point is taken (and same as mine)... if you do not take care to
limit the current, you might fry ~something~

Its fair to say that if you check the circuit to be sure that ~something~ is
limiting the current, you are safe. Remember that those high resistance
pots... set to a low resistance... are not good for much power at all

H^) harry

Seb Francis wrote:

> Normally in an evelope circuit you would have some kind of analog switch
> IC (or FET or something).  Almost certainly you will exceed the current
> limit of this before you exceed the current limit of a 1N4148, so I
> would say it doesn't matter what you use - go for the cheaper smaller
> option (the 1N4148).  And of course include some series resistance with
> the timing cap to avoid melting the switch IC.
>
> Seb
>
> harrybissell wrote:
>
> >Audibly... none
> >
> >Electrically... the IN400x series is a much more powerful diode.
> >A capacitor, when it is fully discharged... looks like a short circuit.
> >The 1N400x diode can carry more current, so it is a better choice
> >unless there is some other means of limiting the maximum current
> >to a safe value.
> >
> >Check the applied voltage to the timing cap... and then see how much
> >current
> >would flow in any series resistance (assume the pots are zero ohms).
> >
> >If the current is small enough, the 1N4148 is OK. If not, 1N400x
> >
> >H^) harry
> >
> >Logan Mitchell Sr wrote:
> >
> >
> >
> >>     12/23/2005 What is the difference audibly & electrically
> >>     between using a 1N914/1N4148 diode as opposed to using a
> >>     1N4000-series diode in an AR/ASR/ADSR generator for the
> >>     ATTACK, DECAY & RELEASE controls? Logan
> >>
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