[sdiy] Hand-matching capacitors for filter stages
Scott Gravenhorst
music.maker at gte.net
Tue Feb 9 19:10:25 CET 2010
thx1138 <thx1138 at earthlink.net> wrote:
[...]
>Hi All,
>
>I define good engineering as the ability to not have to use matched
>components is projects whenever possible.
>
>I am not saying you are not a good engineer, but it helps to reduce cost in
>designs using cheaper devices and spend a bit more time eliminating matched
>caps, resistors as much as possible.
>
>In some cases I find that it is easier to use 1% resistors to tighten up a
>circuit.
>
>Transistors are a different case as I like to use transistor arrays like the
>CA3046/CA3086 but these are getting harder to find in stock around town.
>
>I think we are in for a bit of grief 10 to 20 years from now when people
>quit building analog goodies for us to build with.
>
>Having built some of the Modular projects at E-Mu and Oberheim, I found that
>cost was key in a low income business.
>
>I would love to analyze your filters a bit more and lend an eye on possible
>cures or alternate approaches. This email chain does not allow us to put
>jpeg or pdf's in attachment I believe.
>
>Perhaps we should have a companion site that is used for circuit archival
>for all to use for projects etc.
>
>Regards,
>
>Terry Shultz
Hi Terry,
You are correct that binaries are not allowed on the list.
For what it is worth - there is another electronic music forum site that accepts binaries
and has a demeanor similar to that which we enjoy here.
The forum site is http://electro-music.com/
Binaries are welcome and encouraged. (including at least images and sound).
Several of the members of SDIY, including myself, are currently members there.
The site is not packed with ads like many others are.
-- ScottG
________________________________________________________________________
-- Scott Gravenhorst
-- FPGA MIDI Synthesizer Information: home1.gte.net/res0658s/FPGA_synth/
-- FatMan: home1.gte.net/res0658s/fatman/
-- NonFatMan: home1.gte.net/res0658s/electronics/
-- When the going gets tough, the tough use the command line.
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