[sdiy] Patchell's modules

John L Marshall j.l.marshall at comcast.net
Sun Apr 17 22:00:14 CEST 2005


Bipolar transistors?

Take care,
John

Pacific Northwest Synth Meeting September 25, 2004
----- Original Message ----- 
From: "harrybissell" <harrybissell at prodigy.net>
To: "Roy J. Tellason" <rtellason at blazenet.net>
Cc: <synth-diy at dropmix.xs4all.nl>
Sent: Sunday, April 17, 2005 10:30 AM
Subject: Re: [sdiy] Patchell's modules


> did we tell you about our schizophrenia ???   :^P
>
> H^) harry
>
> "Roy J. Tellason" wrote:
>
>> On Saturday 16 April 2005 09:16 pm, James Patchell wrote:
>> > Actually, a lot of you probably don't realized this...but Harry and I 
>> > are
>> > the same person...1/2 of us lives on the west coast, the other 1/2 in 
>> > the
>> > midwest...:-)
>>
>> Let me test that.
>>
>> How do you feel about BBDs?    :-)
>>
>> > At 03:57 PM 4/16/2005 -0400, you wrote:
>> > >Tom Arnold wrote:
>> > > > Another cool feature of the vocal filter, what other project could 
>> > > > you
>> > >
>> > > order
>> > >
>> > > > bypass caps for by weight?? :-)
>> > >
>> > >uhhh... on any of MY projects ???
>> > >
>> > >(Jim and I agree on bypass caps 100% - we use one, per power pin, per
>> > > supply voltage.  Sometimes I cheat a little bit and use one, every 
>> > > two
>> > > CMOS chips... if they
>> > >are used in straight logic circuit. Usually I don't cheat.  Decoupling
>> > >caps are your
>> > >FRIENDS !!!)
>> > >
>> > >Also... I locate power traces and decoupling caps BEFORE any other 
>> > >parts
>> > >on the
>> > >board.  The layout flows around good power distribution... Not having 
>> > >the
>> > >power
>> > >distribution flow around the other circuits.  I'm not saying you 
>> > >should do
>> > >it that
>> > >way...
>> > >I'm just saying "you should do it that way"   :^P
>> > >
>> > >H^) harry
>> >
>> >          -Jim
>> > ***************************************************************
>> > http://www.oldcrows.net/~patchell
>> >
>> > ***************************************************************
> 




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