[sdiy] SID output protection?

[Antti Pitkämäki]

Hi,

Oops, I indeed messed that link, funny how I managed to do that, but you
found the PDF already.

So it seems I can just leave the original 10k/1000pF lowpass filter there
for not-too-trebly-sound and forget about the original transistor buffer,
going instead for the opamp buffer with protective diodes and the output
resistor.

Thanks for all the help and links, I'll go through the information
contained in them and let's see if I manage to come up with decent
solution. I know it's not difficult, this is just not my field of expertise
:P

BTW, here is another SID output protection circuit:

https://csdb.dk/release/?id=150177

It is based on diodes without any active parts.

Regards,
Antti

On Wed, Jul 30, 2025 at 8:58 PM Terry Bowman via Synth-diy <
synth-diy at synth-diy.org> wrote:

>
> On Jul 30, 2025, at 12:23 PM, Ben Stuyts via Synth-diy <
> synth-diy at synth-diy.org> wrote:
>
> On 30 Jul 2025, at 17:34, Ingo Debus via Synth-diy <
> synth-diy at synth-diy.org> wrote:
>
> That link doesn’t work for me. Is that probably a link to a file on your
> own computer?
>
>
> Looks that way. I thought I was having a bad day.  8D
>
>
> I think my own -3 dB point is already lower than 16 kHz. :-)
>
>
> More like 12k here.
>
>
> Somebody is bound to put +48V on that output from a wrongly configured
> input channel on the mixer.
>
>
> You know which law applies here.
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> “Questions are a burden to others; answers a prison for oneself.”—*The
> Prisoner*, "Arrival"
>
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