[sdiy] Circuit purpose?

[David Ingebretsen]

Wow, thanks everyone for the quick and, as usual, very helpful responses.

David


>> -----Original Message-----
>> From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
>> bounces at dropmix.xs4all.nl] On Behalf Of John Henson
>> Sent: Monday, March 17, 2014 7:56 PM
>> To: synth-diy at dropmix.xs4all.nl
>> Subject: Re: [sdiy] Circuit purpose?
>> 
>> I have seen similar circuit topologies over the years in many areas, but
this
>> looks like an audio line out circuit which is one component more
>> complicated than it needs to be. The 680R resistor represents the 600 Ohm
>> output impedance (it's the cheapest nearest value) the back to back
Electro
>> Caps to behave like a Bi-Polar, and the obligatory 100k to Ground to stop
>> charge on the last Cap causing clicks and bangs when plugging connectors
in
>> and out.
>> If this is something you want to work with, go with 680R resistor from
the
>> Op-Amp output connected to Bi-Polar cap and 100k to Ground after this.
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