[sdiy] protection circuit at audio output

[John Luciani]

On 1/1/07, Antti Pitkämäki <anpitkam at hotmail.com> wrote:

> Since I think it's possible that some of you synth-DIY-gurus have had to
> build a protection circuit to an audio output, I was wondering if you could
> provide me with suggestions for a protection circuit for my C64's SID? I
> guess a capacitor could be used to "filter" possible evil voltage spikes,
> but the idea is that it shouldn't affect the SID's sound in any way, and I
> don't have enough skill to choose the right parts.

If you don't mind SMT you could check the Littelfuse TVS parts. I am using the
SP724AHT (SOT23-6 package) which protects four lines from positive and negative
spikes. The part is $1.09(1) and is stocked by Mouser (possibly
Digikey and Allied).

I am not sure if the parts are available in TH.

(* jcl *)


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