MOTM

I'm sure you're all sick of my silly questions, but I hope this will be my
last. I'm trying to build a keyboard type controller using schematics I
found on another site. My complete stupidity coupled with the vagueness of
the schematics plus an absence of a parts list has left me stumped on a few
parts needed for this circuit. There are 2 capacitors on this schematic. One
is marked 0.001 and the other is marked 1.0. I would figure these
measurements are in microfarads, but I'm just guessing. One is used in the
S&H and Glide function (1.0), the other is used between pins 1 & 2 on a
TL072 op amp (0.001). My questions are A) do these seem like normal values
for their function? B) Should these be polar caps or nonpolar?  and C) what
material should they be? (the vague instructions mentioned poly caps, but
I'm not sure if that is right) Please, somebody, help me out. Thanks -Nate

I'm sure you're all sick of my silly questions, but I hope this will be my
last. I'm trying to build a keyboard type controller using schematics I
found on another site. My complete stupidity coupled with the vagueness of
the schematics plus an absence of a parts list has left me stumped on a few
parts needed for this circuit. There are 2 capacitors on this schematic. One
is marked 0.001 and the other is marked 1.0. I would figure these
measurements are in microfarads, but I'm just guessing. One is used in the
S&H and Glide function (1.0), the other is used between pins 1 & 2 on a
TL072 op amp (0.001). My questions are A) do these seem like normal values
for their function? B) Should these be polar caps or nonpolar?  and C) what
material should they be? (the vague instructions mentioned poly caps, but
I'm not sure if that is right) Please, somebody, help me out. Thanks -Nate

Yes, *most likely* they are in uF, as in 0.001uF and 1.0uF

The 0.001uF will be nonpolar; the 1.0uF might me either depending on what
type you specify. Most likely it's a polyester film cap and will be
nonpolar.

Your enthusiasm is good, but with these questions, you might want to ask for
someone more experienced than you to check your work.

Tony

> -----Original Message-----
> From: Nathan Alan Hunsicker [mailto:nate@...]
> Sent: Monday, September 25, 2000 1:34 PM
> To: MOTM Newsgroup
> Subject: [motm] More OT: what capacitors?
>
>
>
> I'm sure you're all sick of my silly questions, but I hope this will be my
> last. I'm trying to build a keyboard type controller using schematics I
> found on another site. My complete stupidity coupled with the vagueness of
> the schematics plus an absence of a parts list has left me
> stumped on a few
> parts needed for this circuit. There are 2 capacitors on this
> schematic. One
> is marked 0.001 and the other is marked 1.0. I would figure these
> measurements are in microfarads, but I'm just guessing. One is used in the
> S&H and Glide function (1.0), the other is used between pins 1 & 2 on a
> TL072 op amp (0.001). My questions are A) do these seem like normal values
> for their function? B) Should these be polar caps or nonpolar?
> and C) what
> material should they be? (the vague instructions mentioned poly caps, but
> I'm not sure if that is right) Please, somebody, help me out. Thanks -Nate
>
>
>
>
>

from my *limited * knowledge and i would double-check it:

to be safe, i would use an audio-rated bi-polar (BP) electrolytic for the 
first cap (mouser has them) and a cheap old ceramic disc (or yellow axial 
ceramic, like the little motm ones) for the second. from your description 
of the second's value as 0.001uF, keep in mind that that is the same as 
1000pF (picofarads) which is how the catalog will list it.

you really want the help of the synth-DIY list.  sign up at 
http://www.euronet.nl/~rja/Emusic/Synth-diy/

'happy harry' will jump all over your capacitor questions and you will 
learn learn learn.....

mark


At 04:13 PM 9/25/00 -0400, you wrote:

>I'm sure you're all sick of my silly questions, but I hope this will be my
>last. I'm trying to build a keyboard type controller using schematics I
>found on another site. My complete stupidity coupled with the vagueness of
>the schematics plus an absence of a parts list has left me stumped on a few
>parts needed for this circuit. There are 2 capacitors on this schematic. One
>is marked 0.001 and the other is marked 1.0. I would figure these
>measurements are in microfarads, but I'm just guessing. One is used in the
>S&H and Glide function (1.0), the other is used between pins 1 & 2 on a
>TL072 op amp (0.001). My questions are A) do these seem like normal values
>for their function? B) Should these be polar caps or nonpolar?  and C) what
>material should they be? (the vague instructions mentioned poly caps, but
>I'm not sure if that is right) Please, somebody, help me out. Thanks -Nate
>
>
>

Yes, microfarads. For Glide, use a 1mfd at 50V non-polar (also called
bipolar) electrolytic.
For the 0.001 (also called 1nf OR 1000pf!) use a polystyrene. Both from
www.mouser.com

Paul S.

Hello list,

The UEG that all of you commented on a few weeks ago is coming along nicely.
There are just a few items left to finish and I hope to be building these in
about a month. I haven't quoted a price publicly, because I'm still waiting
for some quotes on materials, but I can say it will be in the high $200
range.

I think you will like the performance of this module! ;)

Tony Karavidas
Encore Electronics

http://www.encoreelectronics.com

Designers of "The best MIDI to CV converter on the planet." -Keyboard Oct.
1997

What is this UEG you're referring to?  I couldn't find the original
description in the MOTM archives.

Romeo

-----Original Message-----
From: Tony Karavidas [mailto:tony@...]
Sent: Monday, September 25, 2000 2:02 PM
To: motm@egroups.com
Subject: RE: [motm] Universal Event generator status 



Hello list,

The UEG that all of you commented on a few weeks ago is coming along nicely.
There are just a few items left to finish and I hope to be building these in
about a month. I haven't quoted a price publicly, because I'm still waiting
for some quotes on materials, but I can say it will be in the high $200
range.

I think you will like the performance of this module! ;)

Tony Karavidas
Encore Electronics

http://www.encoreelectronics.com

Designers of "The best MIDI to CV converter on the planet." -Keyboard Oct.
1997

Tony,

When do you plan to start taking orders?  Will it be offered as a kit and assembled?

Thanks,
     Eric

--- Tony Karavidas <tony@...> wrote:
> Hello list,
> 
> The UEG that all of you commented on a few weeks ago is coming along nicely.
> There are just a few items left to finish and I hope to be building these in
> about a month. I haven't quoted a price publicly, because I'm still waiting
> for some quotes on materials, but I can say it will be in the high $200
> range.
> 
> I think you will like the performance of this module! ;)
> 
> Tony Karavidas
> Encore Electronics
> 
> http://www.encoreelectronics.com
> 
> Designers of "The best MIDI to CV converter on the planet." -Keyboard Oct.
> 1997
> 
> 


__________________________________________________
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Check out:

http://www.encoreelectronics.com/motm/ENVGEN5.JPG

This is a drawing of the panel, but I assure you it's real.

Tony

> -----Original Message-----
> From: Fahl, Romeo [mailto:rfahl@...]
> Sent: Monday, September 25, 2000 2:04 PM
> To: 'motm@egroups.com'
> Subject: RE: [motm] Universal Event generator status
>
>
>
> What is this UEG you're referring to?  I couldn't find the original
> description in the MOTM archives.
>
> Romeo
>
>
> -----Original Message-----
> From: Tony Karavidas [mailto:tony@...]
> Sent: Monday, September 25, 2000 2:02 PM
> To: motm@egroups.com
> Subject: RE: [motm] Universal Event generator status
>
>
>
> Hello list,
>
> The UEG that all of you commented on a few weeks ago is coming
> along nicely.
> There are just a few items left to finish and I hope to be
> building these in
> about a month. I haven't quoted a price publicly, because I'm
> still waiting
> for some quotes on materials, but I can say it will be in the high $200
> range.
>
> I think you will like the performance of this module! ;)
>
> Tony Karavidas
> Encore Electronics
>
> http://www.encoreelectronics.com
>
> Designers of "The best MIDI to CV converter on the planet." -Keyboard Oct.
> 1997
>
>
>
>
>
>
>

In a message dated 00-09-25 17:03:04 EDT, you write:

<< I think you will like the performance of this module! ;)
  >>


tony,
from what we all discussed, i think it should be a "killer" and i`m waiting 
to hear when they`ll be available.
best,
dave v.