Annotated Simple DIY Envelope Generator

Time for another annotated stripboard, this time Sam’s Simple DIY Envelope Generator:

The trigger to gate stage confused me a bit; see discussion here.

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Much to my shame but I’ll ask a stupid question.
Does the ground from the jack sockets connect to the ground of the power supply?
Built this circuit, on power up the supply gets very hot quite quickly.

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All grounds should be connected to each other and to the ground (0 V) from the supply. You want all parts of the system to agree on where 0 V is.

If your supply gets hot with only this module plugged in something’s wrong; this uses very little current.

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This will absolutely save me the next time i build this. I had to fiddle about with it a bit.

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I’m a bit late to the party on this one but quick question: is the 10nf capacitor electrolytic, poly, ceramic?

Thanks!

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Ceramic works, but maybe film are better ?

You’d have a bit of trouble finding a 10 nF electrolytic. Mostly they tend to be above 100 nF.

I’d probably use film, but as @Dud says, ceramic should be good.

Thanks both. I had thought that it would be small for an electrolytic but only the 1uf had been called out specifically as non-polarised. Appreciate the help :slight_smile:

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