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tnt

@tubetime A 1M resistor in parallel with a 100n capacitor.

I want to avoid any large DC current, but I don't want it to build a charge either hence the 1M resistor. I also want any noise to be shunted to gnd hence the 100n cap (and the value is because I almost certainly have 100n caps already in BOM).

27 August at 21:36 | Wall-to-wall | Open on chaos.social
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Tube❄️Time

@tnt how'd you pick those values?

28 August at 0:17 | Open on mastodon.social
tnt

@tubetime 1M is what's in ESD wristwrap, so seemed appropriate to just avoid charge buildup.

100n ... honestly just because I have those on most boards anyway. And 30kohm at 50 Hz seemed good enough to avoid hums.

I'm pretty sure I copied that kind of topology from some example somewhere but it's been so long I couldn't give a source.

28 August at 8:06 | Open on chaos.social
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