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

[Seb Francis]

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:
>
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>
>>     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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